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type { Step } from './steps/index.ts';\n\nexport type CheckStatus =\n | 'SUCCESS'\n | 'FAILURE'\n | 'WARNING'\n | 'SKIPPED'\n | 'INFO';\n\nexport interface SpecReference {\n id: string;\n url?: string;\n}\n\nexport interface ConformanceCheck {\n id: string;\n name: string;\n description: string;\n status: CheckStatus;\n timestamp: string;\n specReferences?: SpecReference[];\n details?: Record;\n metadata?: Record;\n errorMessage?: string;\n logs?: string[];\n}\n\nexport const DATED_SPEC_VERSIONS = [\n '2025-03-26',\n '2025-06-18',\n '2025-11-25'\n] as const;\n\nexport type DatedSpecVersion = (typeof DATED_SPEC_VERSIONS)[number];\n\nexport const LATEST_SPEC_VERSION: DatedSpecVersion = '2025-11-25';\n\n/**\n * Wire `protocolVersion` for the in-progress spec. Mirrors\n * `LATEST_PROTOCOL_VERSION` in the spec repo's `schema/draft/schema.ts`;\n * bump when that constant changes.\n */\nexport const DRAFT_PROTOCOL_VERSION = 'DRAFT-2026-v1';\n\n// Wire protocolVersion strings the mock server will negotiate on initialize.\nexport const NEGOTIABLE_PROTOCOL_VERSIONS: readonly string[] = [\n '2025-06-18',\n LATEST_SPEC_VERSION,\n DRAFT_PROTOCOL_VERSION\n];\n\n/**\n * A spec revision the conformance suite can target via `--spec-version`.\n * Always a wire `protocolVersion` string. The CLI also accepts `'draft'` as\n * an alias for {@link DRAFT_PROTOCOL_VERSION}.\n */\nexport type SpecVersion = DatedSpecVersion | typeof DRAFT_PROTOCOL_VERSION;\n\n// Scenarios may also be tagged 'extension' to mark them as off-timeline\n// (selectable via --suite extensions, never via --spec-version). See #256.\nexport type ScenarioSpecTag = SpecVersion | 'extension';\n\n/**\n * Known protocol extensions that this suite has scenarios for.\n * Values are SEP-2133 extension identifiers (the keys used in\n * `capabilities.extensions`).\n */\nexport const EXTENSION_IDS = [\n 'io.modelcontextprotocol/oauth-client-credentials',\n 'io.modelcontextprotocol/enterprise-managed-authorization'\n] as const;\nexport type ExtensionId = (typeof EXTENSION_IDS)[number];\n\n/**\n * Where a scenario's requirement comes from. Either the dated spec timeline\n * (`introducedIn`/`removedIn`) or a named protocol extension that lives\n * outside the spec release cycle. Extensions never match `--spec-version`.\n */\nexport type ScenarioSource =\n | {\n introducedIn: DatedSpecVersion | typeof DRAFT_PROTOCOL_VERSION;\n removedIn?: DatedSpecVersion | typeof DRAFT_PROTOCOL_VERSION;\n }\n | { extensionId: ExtensionId };\n\nexport interface ScenarioUrls {\n serverUrl: string;\n authUrl?: string;\n /**\n * Optional context to pass to the client via MCP_CONFORMANCE_CONTEXT env var.\n * This is a JSON-serializable object containing scenario-specific data like credentials.\n */\n context?: Record;\n}\n\n/** A Node-style request handler — what `http.createServer` accepts. */\nexport type RequestListener = (\n req: import('http').IncomingMessage,\n res: import('http').ServerResponse\n) => void;\n\nexport interface Scenario {\n name: string;\n description: string;\n source: ScenarioSource;\n /**\n * If true, a non-zero client exit code is expected and will not cause the test to fail.\n * Use this for scenarios where the client is expected to error (e.g., rejecting invalid auth).\n */\n allowClientError?: boolean;\n /**\n * Sub-path of the MCP endpoint relative to the handler root. The CLI runner\n * appends this to the listen URL; the hosted runner appends it to the\n * mounted prefix. Default: '' (handler root is the MCP endpoint).\n */\n mcpPath?: string;\n /**\n * Return the request handler without binding a port. The hosted runner\n * mounts this directly under a path prefix so scenarios can run on\n * serverless hosts that don't allow loopback listeners.\n *\n * `getBaseUrl` returns the public URL this handler is reachable at (no\n * trailing slash) — use it for scenarios that embed self-referential\n * absolute URLs in responses. Called lazily so `start()` can resolve it\n * after the OS assigns a port.\n *\n * Implementations should reset per-run state here, not in `start()`.\n * If omitted, the scenario only runs via `start()`/`stop()` (e.g. auth\n * scenarios that need a second origin).\n */\n handler?(getBaseUrl: () => string): RequestListener;\n start(): Promise;\n stop(): Promise;\n getChecks(): ConformanceCheck[];\n /**\n * Checks recorded so far WITHOUT end-of-flow finalization. Some scenarios'\n * `getChecks()` appends aggregate failures for flow steps never observed\n * (\"expected check missing\"); those judgments are only meaningful when one\n * instance saw the whole flow. Stateless mounting (`/x/...`) judges each\n * request on its own content, so it reads this view when present.\n */\n rawChecks?(): ConformanceCheck[];\n /**\n * Client-side choreography as data (see src/steps). When present the\n * runner includes it in MCP_CONFORMANCE_CONTEXT as `steps`, so a client\n * with no bespoke handler for this scenario can still drive it.\n */\n readonly steps?: readonly Step[];\n}\n\n/**\n * Convenience: implement `handler()` + `mcpPath` and get `start()`/`stop()`\n * for free. Covers every scenario that just needs one HTTP origin.\n */\nexport abstract class HandlerScenario implements Scenario {\n abstract name: string;\n abstract description: string;\n abstract readonly source: ScenarioSource;\n allowClientError?: boolean;\n mcpPath = '';\n\n private _server: import('http').Server | null = null;\n private _baseUrl = '';\n\n abstract handler(getBaseUrl: () => string): RequestListener;\n abstract getChecks(): ConformanceCheck[];\n\n async start(): Promise {\n const http = await import('node:http');\n const listener = this.handler(() => this._baseUrl);\n return new Promise((resolve, reject) => {\n this._server = http.createServer(listener);\n this._server.on('error', reject);\n this._server.listen(0, () => {\n const addr = this._server!.address();\n if (!addr || typeof addr !== 'object') {\n return reject(new Error('Failed to get server address'));\n }\n this._baseUrl = `http://localhost:${addr.port}`;\n resolve({ serverUrl: `${this._baseUrl}${this.mcpPath}` });\n });\n });\n }\n\n async stop(): Promise {\n if (!this._server) return;\n await new Promise((resolve) => {\n // closeAllConnections so hung SSE streams don't keep the process alive\n this._server!.closeAllConnections?.();\n this._server!.close(() => resolve());\n });\n this._server = null;\n }\n}\n\n/**\n * Named extra origins a multi-origin scenario needs beyond the resource\n * server. `as` is the OAuth authorization server; `as2`/`idp` cover the\n * three-origin scenarios (authorization-server-migration, EMA).\n */\nexport type AuxOriginRole = 'as' | 'as2' | 'idp';\n\nexport interface AuthHandlerContext {\n /** Public URL of the resource-server mount (no trailing slash). */\n getRsBaseUrl: () => string;\n /**\n * Public URL of an aux origin for this run (no trailing slash). When\n * hosted, this is `/r/` so the run-id is recoverable\n * from any path the client constructs from it (RFC 8414 well-known\n * insertion, endpoint paths, etc.).\n */\n getAuxBaseUrl: (role: AuxOriginRole) => string;\n}\n\nexport interface AuthHandlers {\n /** Resource-server handler — serves /mcp and PRM. */\n rs: RequestListener;\n /** Aux-origin handlers keyed by role. */\n aux: Partial>;\n}\n\n/**\n * Convenience: implement `authHandlers()` and get `start()`/`stop()` for\n * free. `start()` binds one ephemeral localhost port per origin, exactly as\n * the auth scenarios did with `ServerLifecycle` before; the hosted runner\n * mounts the same handlers behind path prefixes + an AS relay instead.\n */\nexport abstract class AuthHandlerScenario implements Scenario {\n abstract name: string;\n abstract description: string;\n abstract readonly source: ScenarioSource;\n allowClientError?: boolean;\n mcpPath = '/mcp';\n\n /** Aux origins this scenario needs. Override for 3-origin scenarios. */\n readonly auxRoles: readonly AuxOriginRole[] = ['as'];\n\n private _servers: import('http').Server[] = [];\n private _urls: { rs: string; aux: Partial> } = {\n rs: '',\n aux: {}\n };\n\n abstract authHandlers(ctx: AuthHandlerContext): AuthHandlers;\n abstract getChecks(): ConformanceCheck[];\n\n /** Optional context to pass to the client (credentials etc). */\n protected scenarioContext?(): Record;\n\n async start(): Promise {\n const http = await import('node:http');\n const handlers = this.authHandlers({\n getRsBaseUrl: () => this._urls.rs,\n getAuxBaseUrl: (role) => {\n const u = this._urls.aux[role];\n if (!u) throw new Error(`aux role '${role}' not started`);\n return u;\n }\n });\n\n const listen = (h: RequestListener): Promise =>\n new Promise((resolve, reject) => {\n const srv = http.createServer(h);\n srv.on('error', reject);\n srv.listen(0, () => {\n const addr = srv.address();\n if (!addr || typeof addr !== 'object') {\n return reject(new Error('Failed to get server address'));\n }\n this._servers.push(srv);\n resolve(`http://localhost:${addr.port}`);\n });\n });\n\n // Aux origins must come up first — RS handlers reference their URLs.\n for (const role of this.auxRoles) {\n const h = handlers.aux[role];\n if (!h) throw new Error(`authHandlers() missing aux role '${role}'`);\n this._urls.aux[role] = await listen(h);\n }\n this._urls.rs = await listen(handlers.rs);\n\n return {\n serverUrl: `${this._urls.rs}${this.mcpPath}`,\n ...(this.scenarioContext && { context: this.scenarioContext() })\n };\n }\n\n async stop(): Promise {\n await Promise.all(\n this._servers.map(\n (s) =>\n new Promise((resolve) => {\n s.closeAllConnections?.();\n s.close(() => resolve());\n })\n )\n );\n this._servers = [];\n this._urls = { rs: '', aux: {} };\n }\n}\n\nexport interface ClientScenario {\n name: string;\n description: string;\n source: ScenarioSource;\n run(serverUrl: string): Promise;\n}\n\nexport interface ClientScenarioForAuthorizationServer {\n name: string;\n description: string;\n source: ScenarioSource;\n run(serverUrl: string): Promise;\n}\n","children",[],[128,203],"00b7ed75-5d12-439b-bea1-1b99dd4a50bb","index.ts","d4e03f20-ad13-11f1-870b-1607ee4eb77e","3756052a-e25a-47bf-b974-d3fdb95d977f",10,["D",1789043611216],"/**\n * Client steering steps (\"generic steering\").\n *\n * Most client scenarios only need plumbing from the client under test:\n * connect, list tools, call a tool, hang around, disconnect. Instead of every\n * SDK's everything-client carrying a per-scenario dispatch table for that\n * choreography, a scenario can declare it as data. The runner ships the\n * steps to the client in MCP_CONFORMANCE_CONTEXT (`context.steps`); a client\n * with no bespoke handler for the scenario name runs a small interpreter over\n * them. Checks stay in the scenario — only the *instructions* become data.\n *\n * The op set is deliberately closed. Anything that needs judgement on the\n * client side (credential modes, MRTR) keeps a named handler.\n *\n * Standing defaults an interpreter should apply without being told:\n * - `initialize` is implicit (connect before the first step);\n * - if the server sends elicitation/create, accept with schema defaults\n * (empty content + `elicitation.applyDefaults` capability);\n * - disconnect after the last step unless a `disconnect` step says when.\n */\n\nimport { z } from 'npm:zod@^4.3.6';\n\n/**\n * `{ \"$from\": \"tools/list\", \"path\": \"tools[name=echo].inputSchema\" }` — a\n * value captured from the most recent result of a previous op. The only\n * dataflow form; two scenarios need it (\"call B with the schema you got for\n * A\"), nothing needs more.\n */\nexport const FromRefSchema = z.object({\n $from: z.enum(['tools/list', 'tools/call']),\n path: z.string()\n});\nexport type FromRef = z.infer;\n\nexport const StepSchema = z.discriminatedUnion('op', [\n z.object({ op: z.literal('tools/list') }),\n z.object({\n op: z.literal('tools/call'),\n name: z.string(),\n /** Argument values may be literals or `$from` captures. */\n arguments: z.record(z.string(), z.unknown()).optional()\n }),\n z.object({ op: z.literal('wait'), ms: z.number().int().nonnegative() }),\n z.object({ op: z.literal('disconnect') })\n]);\nexport type Step = z.infer;\n\nexport const StepsSchema = z.array(StepSchema);\n\n/** Results an interpreter has captured so far, keyed by op. */\nexport type Captures = Partial>;\n\nexport function isFromRef(v: unknown): v is FromRef {\n return (\n typeof v === 'object' &&\n v !== null &&\n '$from' in v &&\n FromRefSchema.safeParse(v).success\n );\n}\n\n/**\n * Resolve a `$from` path against a captured result. Path grammar:\n * dot-separated segments, each either a key (`inputSchema`), an index\n * (`tools[0]`) or a filter on an array of objects (`tools[name=echo]`,\n * first match). Returns undefined when anything along the way is missing —\n * the interpreter should pass that through and let the scenario judge.\n */\nexport function resolveFrom(captures: Captures, ref: FromRef): unknown {\n let cur: unknown = captures[ref.$from];\n for (const seg of ref.path.split('.').filter(Boolean)) {\n const m = seg.match(/^([^[\\]]*)(?:\\[(?:(\\d+)|([^=\\]]+)=([^\\]]*))\\])?$/);\n if (!m) return undefined;\n const [, key, index, fkey, fval] = m;\n if (key) cur = (cur as Record | undefined)?.[key];\n if (index !== undefined) cur = (cur as unknown[] | undefined)?.[+index];\n else if (fkey !== undefined) {\n cur = Array.isArray(cur)\n ? cur.find(\n (x) =>\n typeof x === 'object' &&\n x !== null &&\n String((x as Record)[fkey]) === fval\n )\n : undefined;\n }\n if (cur === undefined) return undefined;\n }\n return cur;\n}\n\n/** Resolve every `$from` capture in a tools/call arguments object (shallow). */\nexport function resolveArguments(\n captures: Captures,\n args: Record | undefined\n): Record {\n const out: Record = {};\n for (const [k, v] of Object.entries(args ?? {})) {\n out[k] = isFromRef(v) ? resolveFrom(captures, v) : v;\n }\n return out;\n}\n",[],[128,220,212],"steps","f3f1c319-4cc9-46e7-a4c4-caed190ccf19",["D",1789043611216],[200],[128,220],"02b35dc0-c3dc-4996-a3e2-53e4a1a0b205","d3f3dc70-ad13-11f1-8f33-1607ee4eb77e","13d18508-400e-4bdc-9c25-c860c1b600e8",7,["D",1789043609699],"import {\n Scenario,\n ClientScenario,\n ClientScenarioForAuthorizationServer,\n ScenarioSource,\n SpecVersion,\n DatedSpecVersion,\n ScenarioSpecTag,\n DATED_SPEC_VERSIONS,\n DRAFT_PROTOCOL_VERSION\n} from '../types.ts';\nimport { InitializeScenario } from './client/initialize.ts';\nimport { ToolsCallScenario } from './client/tools_call.ts';\nimport { StatelessGauntletScenario } from './client/stateless-gauntlet.ts';\nimport { AuthCheckerScenario } from './client/auth-checker.ts';\nimport { ElicitationClientDefaultsScenario } from './client/elicitation-defaults.ts';\nimport { SSERetryScenario } from './client/sse-retry.ts';\nimport { RequestMetadataScenario } from './client/request-metadata.ts';\nimport { MRTRClientScenario } from './client/mrtr-client.ts';\n\n// Import all new server test scenarios\nimport { ServerInitializeScenario } from './server/lifecycle.ts';\nimport { ServerStatelessScenario } from './server/stateless.ts';\n\nimport {\n PingScenario,\n LoggingSetLevelScenario,\n CompletionCompleteScenario\n} from './server/utils.ts';\n\nimport {\n ToolsListScenario,\n ToolsCallSimpleTextScenario,\n ToolsCallImageScenario,\n ToolsCallMultipleContentTypesScenario,\n ToolsCallWithLoggingScenario,\n ToolsCallErrorScenario,\n ToolsCallWithProgressScenario,\n ToolsCallSamplingScenario,\n ToolsCallElicitationScenario,\n ToolsCallAudioScenario,\n ToolsCallEmbeddedResourceScenario\n} from './server/tools.ts';\n\nimport { JsonSchema2020_12Scenario } from './server/json-schema-2020-12.ts';\n\nimport { ElicitationDefaultsScenario } from './server/elicitation-defaults.ts';\nimport { ElicitationEnumsScenario } from './server/elicitation-enums.ts';\nimport { ServerSSEPollingScenario } from './server/sse-polling.ts';\nimport { ServerSSEMultipleStreamsScenario } from './server/sse-multiple-streams.ts';\n\nimport {\n ResourcesListScenario,\n ResourcesReadTextScenario,\n ResourcesReadBinaryScenario,\n ResourcesTemplateReadScenario,\n ResourcesSubscribeScenario,\n ResourcesUnsubscribeScenario,\n ResourcesNotFoundErrorScenario\n} from './server/resources.ts';\n\nimport {\n PromptsListScenario,\n PromptsGetSimpleScenario,\n PromptsGetWithArgsScenario,\n PromptsGetEmbeddedResourceScenario,\n PromptsGetWithImageScenario\n} from './server/prompts.ts';\n\nimport { DNSRebindingProtectionScenario } from './server/dns-rebinding.ts';\nimport { CachingScenario } from './server/caching.ts';\n\n// InputRequiredResult scenarios from (SEP-2322)\nimport {\n InputRequiredResultBasicElicitationScenario,\n InputRequiredResultBasicSamplingScenario,\n InputRequiredResultBasicListRootsScenario,\n InputRequiredResultRequestStateScenario,\n InputRequiredResultMultipleInputRequestsScenario,\n InputRequiredResultMultiRoundScenario,\n InputRequiredResultMissingInputResponseScenario,\n InputRequiredResultNonToolRequestScenario,\n InputRequiredResultResultTypeScenario,\n InputRequiredResultUnsupportedMethodsScenario,\n InputRequiredResultTamperedStateScenario,\n InputRequiredResultCapabilityCheckScenario,\n InputRequiredResultIgnoreExtraParamsScenario,\n InputRequiredResultValidateInputScenario\n} from './server/input-required-result.ts';\n\nimport {\n HttpHeaderValidationScenario,\n HttpCustomHeaderServerValidationScenario\n} from './server/http-standard-headers.ts';\n\nimport {\n authScenariosList,\n backcompatScenariosList,\n draftScenariosList,\n extensionScenariosList\n} from './client/auth/index.ts';\nimport { listMetadataScenarios } from './client/auth/discovery-metadata.ts';\nimport { AuthorizationServerMetadataEndpointScenario } from './authorization-server/authorization-server-metadata.ts';\n\nimport { HttpStandardHeadersScenario } from './client/http-standard-headers.ts';\nimport {\n HttpCustomHeadersScenario,\n HttpInvalidToolHeadersScenario\n} from './client/http-custom-headers.ts';\nimport { JsonSchemaRefDerefScenario } from './client/json-schema-ref-deref.ts';\n\n// Pending client scenarios (not yet fully tested/implemented)\nconst pendingClientScenariosList: ClientScenario[] = [\n // JSON Schema 2020-12 (SEP-1613)\n // This test is pending until the SDK includes PR #1135 which preserves\n // $schema, $defs, and additionalProperties fields in tool schemas.\n new JsonSchema2020_12Scenario(),\n\n // On hold until server-side SSE improvements are made\n // https://github.com/modelcontextprotocol/typescript-sdk/pull/1129\n new ServerSSEPollingScenario(),\n\n // HTTP Standardization (SEP-2243)\n // Pending until the everything-server fully implements SEP-2243\n // header validation (case-insensitive names, whitespace trimming, -32001 error code)\n new HttpHeaderValidationScenario(),\n new HttpCustomHeaderServerValidationScenario()\n];\n\n// All client scenarios\nconst allClientScenariosList: ClientScenario[] = [\n // Lifecycle scenarios\n new ServerInitializeScenario(),\n new ServerStatelessScenario(),\n\n // Utilities scenarios\n new LoggingSetLevelScenario(),\n new PingScenario(),\n new CompletionCompleteScenario(),\n\n // Tools scenarios\n new ToolsListScenario(),\n new ToolsCallSimpleTextScenario(),\n new ToolsCallImageScenario(),\n new ToolsCallAudioScenario(),\n new ToolsCallEmbeddedResourceScenario(),\n new ToolsCallMultipleContentTypesScenario(),\n new ToolsCallWithLoggingScenario(),\n new ToolsCallErrorScenario(),\n new ToolsCallWithProgressScenario(),\n new ToolsCallSamplingScenario(),\n new ToolsCallElicitationScenario(),\n\n // JSON Schema 2020-12 support (SEP-1613)\n new JsonSchema2020_12Scenario(),\n\n // Elicitation scenarios (SEP-1034)\n new ElicitationDefaultsScenario(),\n\n // SSE Polling scenarios (SEP-1699)\n new ServerSSEPollingScenario(),\n new ServerSSEMultipleStreamsScenario(),\n\n // Elicitation scenarios (SEP-1330) - pending\n new ElicitationEnumsScenario(),\n\n // Resources scenarios\n new ResourcesListScenario(),\n new ResourcesReadTextScenario(),\n new ResourcesReadBinaryScenario(),\n new ResourcesTemplateReadScenario(),\n new ResourcesSubscribeScenario(),\n new ResourcesUnsubscribeScenario(),\n\n // Resources error handling (SEP-2164)\n new ResourcesNotFoundErrorScenario(),\n\n // Prompts scenarios\n new PromptsListScenario(),\n new PromptsGetSimpleScenario(),\n new PromptsGetWithArgsScenario(),\n new PromptsGetEmbeddedResourceScenario(),\n new PromptsGetWithImageScenario(),\n\n // Security scenarios\n new DNSRebindingProtectionScenario(),\n\n // Caching scenarios (SEP-2549)\n new CachingScenario(),\n // HTTP Standardization scenarios (SEP-2243)\n new HttpHeaderValidationScenario(),\n new HttpCustomHeaderServerValidationScenario(),\n\n // InputRequiredResult scenarios (SEP-2322)\n new InputRequiredResultBasicElicitationScenario(),\n new InputRequiredResultBasicSamplingScenario(),\n new InputRequiredResultBasicListRootsScenario(),\n new InputRequiredResultRequestStateScenario(),\n new InputRequiredResultMultipleInputRequestsScenario(),\n new InputRequiredResultMultiRoundScenario(),\n new InputRequiredResultMissingInputResponseScenario(),\n new InputRequiredResultNonToolRequestScenario(),\n new InputRequiredResultResultTypeScenario(),\n new InputRequiredResultUnsupportedMethodsScenario(),\n new InputRequiredResultTamperedStateScenario(),\n new InputRequiredResultCapabilityCheckScenario(),\n new InputRequiredResultIgnoreExtraParamsScenario(),\n new InputRequiredResultValidateInputScenario()\n];\n\n// Scenarios that test requirements introduced in the in-progress draft spec.\n// They run via `--suite draft` (or `--suite all`) and are excluded from the\n// default `active` suite until the draft is published as a dated release.\nconst draftClientScenariosList: ClientScenario[] =\n allClientScenariosList.filter(\n (scenario) =>\n 'introducedIn' in scenario.source &&\n scenario.source.introducedIn === DRAFT_PROTOCOL_VERSION\n );\n\n// Active client scenarios (excludes pending and draft)\nconst activeClientScenariosList: ClientScenario[] =\n allClientScenariosList.filter(\n (scenario) =>\n !pendingClientScenariosList.some(\n (pending) => pending.name === scenario.name\n ) &&\n !draftClientScenariosList.some((draft) => draft.name === scenario.name)\n );\n\n// Client scenarios map - built from list\nexport const clientScenarios = new Map(\n allClientScenariosList.map((scenario) => [scenario.name, scenario])\n);\n\n// All client scenarios for authorization server\nconst allClientScenariosListForAuthorizationServer: ClientScenario[] = [\n // Authorization server scenarios\n new AuthorizationServerMetadataEndpointScenario()\n];\n\n// Client scenarios map for authorization server - built from list\nexport const clientScenariosForAuthorizationServer = new Map<\n string,\n ClientScenario\n>(\n allClientScenariosListForAuthorizationServer.map((scenario) => [\n scenario.name,\n scenario\n ])\n);\n\n// All client test scenarios (core + backcompat + extensions)\nconst scenariosList: Scenario[] = [\n new InitializeScenario(),\n new ToolsCallScenario(),\n new ElicitationClientDefaultsScenario(),\n new SSERetryScenario(),\n new RequestMetadataScenario(),\n ...authScenariosList,\n ...backcompatScenariosList,\n ...draftScenariosList,\n ...extensionScenariosList,\n\n // MRTR client conformance (SEP-2322)\n new MRTRClientScenario(),\n\n // HTTP Standardization scenarios (SEP-2243)\n new HttpStandardHeadersScenario(),\n new HttpCustomHeadersScenario(),\n new HttpInvalidToolHeadersScenario(),\n\n // JSON Schema network $ref dereferencing (SEP-2106)\n new JsonSchemaRefDerefScenario(),\n\n // Stateless gauntlet — single server, validating tools, no run-id needed\n new StatelessGauntletScenario(),\n\n // Auth re-auth chain checker — token encodes progress through the rungs\n new AuthCheckerScenario()\n];\n\n// Core scenarios (tier 1 requirements)\nconst coreScenariosList: Scenario[] = [\n new InitializeScenario(),\n new ToolsCallScenario(),\n new ElicitationClientDefaultsScenario(),\n new SSERetryScenario(),\n ...authScenariosList\n];\n\n// Scenarios map - built from list\nexport const scenarios = new Map(\n scenariosList.map((scenario) => [scenario.name, scenario])\n);\n\nexport function registerScenario(name: string, scenario: Scenario): void {\n scenarios.set(name, scenario);\n}\n\nexport function getScenario(name: string): Scenario | undefined {\n return scenarios.get(name);\n}\n\nexport function getClientScenario(name: string): ClientScenario | undefined {\n return clientScenarios.get(name);\n}\n\nexport function getClientScenarioForAuthorizationServer(\n name: string\n): ClientScenarioForAuthorizationServer | undefined {\n return clientScenariosForAuthorizationServer.get(name);\n}\n\nexport function listScenarios(): string[] {\n return Array.from(scenarios.keys());\n}\n\nexport function listClientScenarios(): string[] {\n return Array.from(clientScenarios.keys());\n}\n\nexport function listActiveClientScenarios(): string[] {\n return activeClientScenariosList.map((scenario) => scenario.name);\n}\n\nexport function listPendingClientScenarios(): string[] {\n return pendingClientScenariosList.map((scenario) => scenario.name);\n}\n\nexport function listAuthScenarios(): string[] {\n return authScenariosList.map((scenario) => scenario.name);\n}\n\nexport function listCoreScenarios(): string[] {\n return coreScenariosList.map((scenario) => scenario.name);\n}\n\nexport function listExtensionScenarios(): string[] {\n return extensionScenariosList.map((scenario) => scenario.name);\n}\n\nexport function listBackcompatScenarios(): string[] {\n return backcompatScenariosList.map((scenario) => scenario.name);\n}\n\nexport function listClientScenariosForAuthorizationServer(): string[] {\n return Array.from(clientScenariosForAuthorizationServer.keys());\n}\n\n// All client-testing scenarios that target the draft spec, derived from the\n// declared `source.introducedIn` rather than a hand-maintained list (covers\n// both the auth draft scenarios and the non-auth ones, e.g. SEP-2243/2575).\nconst draftSpecScenariosList: Scenario[] = scenariosList.filter(\n (scenario) =>\n 'introducedIn' in scenario.source &&\n scenario.source.introducedIn === DRAFT_PROTOCOL_VERSION\n);\n\nexport function listDraftScenarios(): string[] {\n return draftSpecScenariosList.map((scenario) => scenario.name);\n}\n\nexport function listDraftClientScenarios(): string[] {\n return draftClientScenariosList.map((scenario) => scenario.name);\n}\n\nexport { listMetadataScenarios };\n\n// All valid spec versions, used by the CLI to validate --spec-version input.\n// 'extension' is intentionally excluded — extension scenarios are off-timeline\n// and selected via `--suite extensions`, not `--spec-version`.\nexport const ALL_SPEC_VERSIONS: SpecVersion[] = [\n ...DATED_SPEC_VERSIONS,\n DRAFT_PROTOCOL_VERSION\n];\n\nexport function resolveSpecVersion(value: string): SpecVersion {\n if (value === 'draft') return DRAFT_PROTOCOL_VERSION;\n if (ALL_SPEC_VERSIONS.includes(value as SpecVersion)) {\n return value as SpecVersion;\n }\n console.error(`Unknown spec version: ${value}`);\n console.error(\n `Valid versions: ${ALL_SPEC_VERSIONS.join(', ')} (or 'draft' as an alias for ${DRAFT_PROTOCOL_VERSION})`\n );\n process.exit(1);\n}\n\nfunction versionIndex(\n v: DatedSpecVersion | typeof DRAFT_PROTOCOL_VERSION\n): number {\n return ALL_SPEC_VERSIONS.indexOf(v);\n}\n\n// Off-timeline sources (extensions etc.) are never selected by --spec-version.\nfunction matchesSpecVersion(\n source: ScenarioSource,\n version: SpecVersion\n): boolean {\n if ('extensionId' in source) return false;\n return (\n versionIndex(source.introducedIn) <= versionIndex(version) &&\n (source.removedIn === undefined ||\n versionIndex(version) < versionIndex(source.removedIn))\n );\n}\n\nexport function listScenariosForSpec(version: SpecVersion): string[] {\n return scenariosList\n .filter((s) => matchesSpecVersion(s.source, version))\n .map((s) => s.name);\n}\n\nexport function listClientScenariosForSpec(version: SpecVersion): string[] {\n return allClientScenariosList\n .filter((s) => matchesSpecVersion(s.source, version))\n .map((s) => s.name);\n}\n\nexport function listClientScenariosForAuthorizationServerForSpec(\n version: SpecVersion\n): string[] {\n return allClientScenariosListForAuthorizationServer\n .filter((s) => matchesSpecVersion(s.source, version))\n .map((s) => s.name);\n}\n\nexport function getScenarioSpecVersions(\n name: string\n): ScenarioSpecTag[] | undefined {\n const s =\n scenarios.get(name) ??\n clientScenarios.get(name) ??\n clientScenariosForAuthorizationServer.get(name);\n if (!s) return undefined;\n if ('extensionId' in s.source) return ['extension'];\n const result: ScenarioSpecTag[] = [];\n for (const v of ALL_SPEC_VERSIONS) {\n if (matchesSpecVersion(s.source, v)) result.push(v);\n }\n return result;\n}\n\nexport type { SpecVersion, ScenarioSpecTag };\n",[],[128,233,212],"scenarios","a8a26097-d929-4aa8-907a-2b395b7607d4","utils.ts","db81afe4-ad13-11f1-a25b-1607ee4eb77e","ba69bf07-8a57-469b-9cb9-0369b79d16d1",29,["D",1789043622349],"/**\n * Utilities test scenarios for MCP servers\n */\n\nimport { ClientScenario, ConformanceCheck } from '../../types.ts';\nimport { connectToServer } from './client-helper.ts';\n\nexport class LoggingSetLevelScenario implements ClientScenario {\n name = 'logging-set-level';\n readonly source = { introducedIn: '2025-06-18' } as const;\n description = `Test setting logging level.\n\n**Server Implementation Requirements:**\n\n**Endpoint**: \\`logging/setLevel\\`\n\n**Requirements**:\n- Accept log level setting\n- Filter subsequent log notifications based on level\n- Return empty object \\`{}\\`\n\n**Log Levels** (in order of severity):\n- \\`debug\\`\n- \\`info\\`\n- \\`notice\\`\n- \\`warning\\`\n- \\`error\\`\n- \\`critical\\`\n- \\`alert\\`\n- \\`emergency\\``;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n try {\n const connection = await connectToServer(serverUrl);\n\n // Send logging/setLevel request\n const result = await connection.client.setLoggingLevel('info');\n\n // Validate response (should return empty object {})\n const errors: string[] = [];\n if (result && Object.keys(result).length > 0) {\n errors.push('Expected empty object {} response');\n }\n\n checks.push({\n id: 'logging-set-level',\n name: 'LoggingSetLevel',\n description: 'Server accepts logging level setting',\n status: errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: errors.length > 0 ? errors.join('; ') : undefined,\n specReferences: [\n {\n id: 'MCP-Logging',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/utilities/logging'\n }\n ],\n details: {\n result\n }\n });\n\n await connection.close();\n } catch (error) {\n checks.push({\n id: 'logging-set-level',\n name: 'LoggingSetLevel',\n description: 'Server accepts logging level setting',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: [\n {\n id: 'MCP-Logging',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/utilities/logging'\n }\n ]\n });\n }\n\n return checks;\n }\n}\n\nexport class PingScenario implements ClientScenario {\n name = 'ping';\n readonly source = { introducedIn: '2025-06-18' } as const;\n description = `Test ping utility for connection health check.\n\n**Server Implementation Requirements:**\n\n**Endpoint**: \\`ping\\`\n\n**Requirements**:\n- Accept ping request with no parameters\n- Respond promptly with empty object \\`{}\\`\n\n**Request Format**:\n\n\\`\\`\\`json\n{\n \"jsonrpc\": \"2.0\",\n \"id\": \"123\",\n \"method\": \"ping\"\n}\n\\`\\`\\`\n\n**Response Format**:\n\n\\`\\`\\`json\n{\n \"jsonrpc\": \"2.0\",\n \"id\": \"123\",\n \"result\": {}\n}\n\\`\\`\\`\n\n**Implementation Note**: The ping utility allows either party to verify that their counterpart is still responsive and the connection is alive.`;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n try {\n const connection = await connectToServer(serverUrl);\n\n // Send ping request\n const result = await connection.client.ping();\n\n // Validate response (should return empty object {})\n const errors: string[] = [];\n if (result && Object.keys(result).length > 0) {\n errors.push('Expected empty object {} response');\n }\n\n checks.push({\n id: 'ping',\n name: 'Ping',\n description: 'Server responds to ping requests',\n status: errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: errors.length > 0 ? errors.join('; ') : undefined,\n specReferences: [\n {\n id: 'MCP-Ping',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/basic/utilities/ping'\n }\n ],\n details: {\n result\n }\n });\n\n await connection.close();\n } catch (error) {\n checks.push({\n id: 'ping',\n name: 'Ping',\n description: 'Server responds to ping requests',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: [\n {\n id: 'MCP-Ping',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/basic/utilities/ping'\n }\n ]\n });\n }\n\n return checks;\n }\n}\n\nexport class CompletionCompleteScenario implements ClientScenario {\n name = 'completion-complete';\n readonly source = { introducedIn: '2025-06-18' } as const;\n description = `Test completion endpoint.\n\n**Server Implementation Requirements:**\n\n**Endpoint**: \\`completion/complete\\`\n\n**Requirements**:\n- Accept completion requests for prompt or resource template arguments\n- Provide contextual suggestions based on partial input\n- Return array of completion values ranked by relevance\n\n**Request Format**:\n\n\\`\\`\\`json\n{\n \"method\": \"completion/complete\",\n \"params\": {\n \"ref\": {\n \"type\": \"ref/prompt\",\n \"name\": \"test_prompt_with_arguments\"\n },\n \"argument\": {\n \"name\": \"arg1\",\n \"value\": \"par\"\n }\n }\n}\n\\`\\`\\`\n\n**Response Format**:\n\n\\`\\`\\`json\n{\n \"completion\": {\n \"values\": [\"paris\", \"park\", \"party\"],\n \"total\": 150,\n \"hasMore\": false\n }\n}\n\\`\\`\\`\n\n**Implementation Note**: For conformance testing, completion support can be minimal or return empty arrays. The capability just needs to be declared and the endpoint must respond correctly.`;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n try {\n const connection = await connectToServer(serverUrl);\n\n // Send completion/complete request\n const result = await connection.client.complete({\n ref: {\n type: 'ref/prompt',\n name: 'test_prompt_with_arguments'\n },\n argument: {\n name: 'arg1',\n value: 'test'\n }\n });\n\n // Validate response structure\n const errors: string[] = [];\n if (!result.completion) {\n errors.push('Missing completion field');\n } else {\n if (!result.completion.values)\n errors.push('Missing values array in completion');\n if (!Array.isArray(result.completion.values))\n errors.push('completion.values is not an array');\n }\n\n checks.push({\n id: 'completion-complete',\n name: 'CompletionComplete',\n description: 'Server responds to completion requests',\n status: errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: errors.length > 0 ? errors.join('; ') : undefined,\n specReferences: [\n {\n id: 'MCP-Completion',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/utilities/completion'\n }\n ],\n details: {\n result\n }\n });\n\n await connection.close();\n } catch (error) {\n checks.push({\n id: 'completion-complete',\n name: 'CompletionComplete',\n description: 'Server responds to completion requests',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: [\n {\n id: 'MCP-Completion',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/utilities/completion'\n }\n ]\n });\n }\n\n return checks;\n }\n}\n",[],[128,233,243,235],"server","92d391ab-bdf7-4371-9264-d3b3aeec03ae","tools.ts","db1d9f18-ad13-11f1-8a3f-1607ee4eb77e",28,["D",1789043621716],"/**\n * Tools test scenarios for MCP servers\n */\n\nimport { ClientScenario, ConformanceCheck } from '../../types.ts';\nimport { connectToServer, NotificationCollector } from './client-helper.ts';\nimport {\n CallToolResultSchema,\n CreateMessageRequestSchema,\n ElicitRequestSchema,\n Progress\n} from 'npm:@modelcontextprotocol/sdk@^1.29.0/types.js';\n\nconst TOOL_NAME_PATTERN = /^[A-Za-z0-9_./-]+$/;\nconst TOOL_NAME_MAX_LENGTH = 64;\n\nconst TOOLS_NAME_FORMAT_SPEC_REFS = [\n {\n id: 'MCP-Tools-List',\n url: 'https://modelcontextprotocol.io/specification/2025-11-25/server/tools#listing-tools'\n },\n {\n id: 'SEP-986',\n url: 'https://modelcontextprotocol.io/specification/2025-11-25/server/tools#tool-names'\n }\n];\n\nexport function validateToolNameFormat(name: string): string | null {\n if (name.length < 1 || name.length > TOOL_NAME_MAX_LENGTH) {\n return `length ${name.length} is outside 1-${TOOL_NAME_MAX_LENGTH}`;\n }\n if (!TOOL_NAME_PATTERN.test(name)) {\n return 'contains characters outside [A-Za-z0-9_./-]';\n }\n return null;\n}\n\nexport function buildToolsNameFormatCheck(\n tools: ReadonlyArray<{ name?: unknown }> | undefined\n): ConformanceCheck {\n const timestamp = new Date().toISOString();\n const baseCheck = {\n id: 'tools-name-format',\n name: 'ToolsNameFormat',\n description: 'Tool names are 1-64 characters and match ^[A-Za-z0-9_./-]+$',\n specReferences: TOOLS_NAME_FORMAT_SPEC_REFS,\n timestamp\n };\n\n if (!Array.isArray(tools) || tools.length === 0) {\n return {\n ...baseCheck,\n status: 'INFO',\n errorMessage: 'No tools advertised; nothing to validate',\n details: { toolCount: 0 }\n };\n }\n\n const toolResults: Record = {};\n const violations: string[] = [];\n\n tools.forEach((tool, index) => {\n const name = typeof tool.name === 'string' ? tool.name : '';\n const key = name || ``;\n const reason =\n typeof tool.name === 'string'\n ? validateToolNameFormat(tool.name)\n : 'name is not a string';\n if (reason) {\n toolResults[key] = `invalid: ${reason}`;\n violations.push(`${key}: ${reason}`);\n } else {\n toolResults[key] = 'valid';\n }\n });\n\n return {\n ...baseCheck,\n status: violations.length === 0 ? 'SUCCESS' : 'FAILURE',\n errorMessage:\n violations.length > 0\n ? `${violations.length} tool name(s) violate SEP-986 format: ${violations.join('; ')}`\n : undefined,\n details: {\n toolCount: tools.length,\n results: toolResults\n }\n };\n}\n\nexport class ToolsListScenario implements ClientScenario {\n name = 'tools-list';\n readonly source = { introducedIn: '2025-06-18' } as const;\n description = `Test listing available tools.\n\n**Server Implementation Requirements:**\n\n**Endpoint**: \\`tools/list\\`\n\n**Requirements**:\n- Return array of all available tools\n- Each tool MUST have:\n - \\`name\\` (string, 1-64 chars, matching \\`^[A-Za-z0-9_./-]+$\\`)\n - \\`description\\` (string)\n - \\`inputSchema\\` (valid JSON Schema object)`;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n try {\n const connection = await connectToServer(serverUrl);\n\n const result = await connection.client.listTools();\n\n // Validate response structure\n const errors: string[] = [];\n if (!result.tools) {\n errors.push('Missing tools array');\n } else {\n if (!Array.isArray(result.tools)) {\n errors.push('tools is not an array');\n }\n\n result.tools.forEach((tool, index) => {\n if (!tool.name) errors.push(`Tool ${index}: missing name`);\n if (!tool.description)\n errors.push(`Tool ${index}: missing description`);\n if (!tool.inputSchema)\n errors.push(`Tool ${index}: missing inputSchema`);\n });\n }\n\n checks.push({\n id: 'tools-list',\n name: 'ToolsList',\n description: 'Server lists available tools with valid structure',\n status: errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: errors.length > 0 ? errors.join('; ') : undefined,\n specReferences: [\n {\n id: 'MCP-Tools-List',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/tools#listing-tools'\n }\n ],\n details: {\n toolCount: result.tools?.length || 0,\n tools: result.tools?.map((t) => t.name)\n }\n });\n\n // Validate tool name format per SEP-986:\n // names MUST be 1-64 chars matching ^[A-Za-z0-9_./-]+$\n checks.push(buildToolsNameFormatCheck(result.tools));\n\n await connection.close();\n } catch (error) {\n checks.push({\n id: 'tools-list',\n name: 'ToolsList',\n description: 'Server lists available tools with valid structure',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: [\n {\n id: 'MCP-Tools-List',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/tools#listing-tools'\n }\n ]\n });\n }\n\n return checks;\n }\n}\n\nexport class ToolsCallSimpleTextScenario implements ClientScenario {\n name = 'tools-call-simple-text';\n readonly source = { introducedIn: '2025-06-18' } as const;\n description = `Test calling a tool that returns simple text.\n\n**Server Implementation Requirements:**\n\nImplement tool \\`test_simple_text\\` with no arguments that returns:\n\n\\`\\`\\`json\n{\n \"content\": [\n {\n \"type\": \"text\",\n \"text\": \"This is a simple text response for testing.\"\n }\n ]\n}\n\\`\\`\\``;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n try {\n const connection = await connectToServer(serverUrl);\n\n const result = await connection.client.callTool({\n name: 'test_simple_text'\n /* omit arguments as it is not required in the schema */\n });\n\n // Validate response\n const errors: string[] = [];\n const content = (result as any).content;\n if (!content) errors.push('Missing content array');\n if (!Array.isArray(content)) errors.push('content is not an array');\n if (content && content.length === 0)\n errors.push('content array is empty');\n\n const textContent =\n content && content.find((c: any) => c.type === 'text');\n if (!textContent) errors.push('No text content found');\n if (textContent && !textContent.text)\n errors.push('Text content missing text field');\n\n checks.push({\n id: 'tools-call-simple-text',\n name: 'ToolsCallSimpleText',\n description: 'Tool returns simple text content',\n status: errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: errors.length > 0 ? errors.join('; ') : undefined,\n specReferences: [\n {\n id: 'MCP-Tools-Call',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/tools#calling-tools'\n }\n ],\n details: {\n result\n }\n });\n\n await connection.close();\n } catch (error) {\n checks.push({\n id: 'tools-call-simple-text',\n name: 'ToolsCallSimpleText',\n description: 'Tool returns simple text content',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: [\n {\n id: 'MCP-Tools-Call',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/tools#calling-tools'\n }\n ]\n });\n }\n\n return checks;\n }\n}\n\nexport class ToolsCallImageScenario implements ClientScenario {\n name = 'tools-call-image';\n readonly source = { introducedIn: '2025-06-18' } as const;\n description = `Test calling a tool that returns image content.\n\n**Server Implementation Requirements:**\n\nImplement tool \\`test_image_content\\` with no arguments that returns:\n\n\\`\\`\\`json\n{\n \"content\": [\n {\n \"type\": \"image\",\n \"data\": \"\",\n \"mimeType\": \"image/png\"\n }\n ]\n}\n\\`\\`\\`\n\n**Implementation Note**: Use a minimal test image (e.g., 1x1 red pixel PNG)`;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n try {\n const connection = await connectToServer(serverUrl);\n\n const result = await connection.client.callTool({\n name: 'test_image_content',\n arguments: {}\n });\n\n // Validate response\n const errors: string[] = [];\n const content = (result as any).content;\n if (!content) errors.push('Missing content array');\n\n const imageContent =\n content && content.find((c: any) => c.type === 'image');\n if (!imageContent) errors.push('No image content found');\n if (imageContent && !imageContent.data)\n errors.push('Image content missing data field');\n if (imageContent && !imageContent.mimeType)\n errors.push('Image content missing mimeType');\n\n checks.push({\n id: 'tools-call-image',\n name: 'ToolsCallImage',\n description: 'Tool returns image content',\n status: errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: errors.length > 0 ? errors.join('; ') : undefined,\n specReferences: [\n {\n id: 'MCP-Tools-Call',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/tools#calling-tools'\n }\n ],\n details: {\n mimeType: imageContent?.mimeType,\n hasData: !!imageContent?.data\n }\n });\n\n await connection.close();\n } catch (error) {\n checks.push({\n id: 'tools-call-image',\n name: 'ToolsCallImage',\n description: 'Tool returns image content',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: [\n {\n id: 'MCP-Tools-Call',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/tools#calling-tools'\n }\n ]\n });\n }\n\n return checks;\n }\n}\n\nexport class ToolsCallMultipleContentTypesScenario implements ClientScenario {\n name = 'tools-call-mixed-content';\n readonly source = { introducedIn: '2025-06-18' } as const;\n description = `Test tool returning multiple content types.\n\n**Server Implementation Requirements:**\n\nImplement tool \\`test_multiple_content_types\\` with no arguments that returns:\n\n\\`\\`\\`json\n{\n \"content\": [\n {\n \"type\": \"text\",\n \"text\": \"Multiple content types test:\"\n },\n {\n \"type\": \"image\",\n \"data\": \"\",\n \"mimeType\": \"image/png\"\n },\n {\n \"type\": \"resource\",\n \"resource\": {\n \"uri\": \"test://mixed-content-resource\",\n \"mimeType\": \"application/json\",\n \"text\": \"{\"test\":\"data\",\"value\":123}\"\n }\n }\n ]\n}\n\\`\\`\\``;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n try {\n const connection = await connectToServer(serverUrl);\n\n const result = await connection.client.callTool({\n name: 'test_multiple_content_types',\n arguments: {}\n });\n\n // Validate response\n const errors: string[] = [];\n const content = (result as any).content;\n if (!content) errors.push('Missing content array');\n if (content && content.length < 2)\n errors.push('Expected multiple content items');\n\n const hasText = content && content.some((c: any) => c.type === 'text');\n const hasImage = content && content.some((c: any) => c.type === 'image');\n const hasResource =\n content && content.some((c: any) => c.type === 'resource');\n\n if (!hasText) errors.push('Missing text content');\n if (!hasImage) errors.push('Missing image content');\n if (!hasResource) errors.push('Missing resource content');\n\n checks.push({\n id: 'tools-call-mixed-content',\n name: 'ToolsCallMixedContent',\n description: 'Tool returns multiple content types',\n status: errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: errors.length > 0 ? errors.join('; ') : undefined,\n specReferences: [\n {\n id: 'MCP-Tools-Call',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/tools#calling-tools'\n }\n ],\n details: {\n contentCount: content ? content.length : 0,\n contentTypes: content ? content.map((c: any) => c.type) : []\n }\n });\n\n await connection.close();\n } catch (error) {\n checks.push({\n id: 'tools-call-mixed-content',\n name: 'ToolsCallMixedContent',\n description: 'Tool returns multiple content types',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: [\n {\n id: 'MCP-Tools-Call',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/tools#calling-tools'\n }\n ]\n });\n }\n\n return checks;\n }\n}\n\nexport class ToolsCallWithLoggingScenario implements ClientScenario {\n name = 'tools-call-with-logging';\n readonly source = { introducedIn: '2025-06-18' } as const;\n description = `Test tool that sends log messages during execution.\n\n**Server Implementation Requirements:**\n\nImplement tool \\`test_tool_with_logging\\` with no arguments.\n\n**Behavior**: During execution, send 3 log notifications at info level:\n1. \"Tool execution started\"\n2. \"Tool processing data\" (after ~50ms delay)\n3. \"Tool execution completed\" (after another ~50ms delay)\n\n**Returns**: Text content confirming execution\n\n**Implementation Note**: The delays are important to test that clients can receive multiple log notifications during tool execution`;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n try {\n const connection = await connectToServer(serverUrl);\n const notifications = new NotificationCollector(connection.client);\n\n // Set logging level to debug\n await connection.client.setLoggingLevel('debug');\n\n await connection.client.callTool({\n name: 'test_tool_with_logging',\n arguments: {}\n });\n\n // Wait a bit for notifications to arrive\n await new Promise((resolve) => setTimeout(resolve, 200));\n\n // Check for log notifications from the NotificationCollector\n const logNotifications = notifications.getNotifications();\n\n const errors: string[] = [];\n if (logNotifications.length === 0) {\n errors.push('No log notifications received');\n } else if (logNotifications.length < 3) {\n errors.push(\n `Expected at least 3 log messages, got ${logNotifications.length}`\n );\n }\n\n checks.push({\n id: 'tools-call-with-logging',\n name: 'ToolsCallWithLogging',\n description: 'Tool sends log messages during execution',\n status: errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: errors.length > 0 ? errors.join('; ') : undefined,\n specReferences: [\n {\n id: 'MCP-Logging',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/utilities/logging'\n }\n ],\n details: {\n logCount: logNotifications.length,\n logs: logNotifications.map((n: any) => n.params)\n }\n });\n\n await connection.close();\n } catch (error) {\n checks.push({\n id: 'tools-call-with-logging',\n name: 'ToolsCallWithLogging',\n description: 'Tool sends log messages during execution',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: [\n {\n id: 'MCP-Logging',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/utilities/logging'\n }\n ]\n });\n }\n\n return checks;\n }\n}\n\nexport class ToolsCallErrorScenario implements ClientScenario {\n name = 'tools-call-error';\n readonly source = { introducedIn: '2025-06-18' } as const;\n description = `Test tool error reporting.\n\n**Server Implementation Requirements:**\n\nImplement tool \\`test_error_handling\\` with no arguments.\n\n**Behavior**: Always throw an error\n\n**Returns**: JSON-RPC response with \\`isError: true\\`\n\n\\`\\`\\`json\n{\n \"isError\": true,\n \"content\": [\n {\n \"type\": \"text\",\n \"text\": \"This tool intentionally returns an error for testing\"\n }\n ]\n}\n\\`\\`\\``;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n try {\n const connection = await connectToServer(serverUrl);\n\n const result: any = await connection.client.callTool({\n name: 'test_error_handling',\n arguments: {}\n });\n\n // Check if result has isError flag\n const hasIsError = result.isError === true;\n const hasContent = result.content && result.content.length > 0;\n const hasErrorMessage = hasContent && result.content[0].text;\n\n checks.push({\n id: 'tools-call-error',\n name: 'ToolsCallError',\n description: 'Tool returns error correctly',\n status: hasIsError && hasErrorMessage ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: !hasIsError\n ? 'Tool did not return isError: true'\n : !hasErrorMessage\n ? 'Error result missing error message'\n : undefined,\n specReferences: [\n {\n id: 'MCP-Error-Handling',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/basic/lifecycle'\n }\n ],\n details: {\n result\n }\n });\n\n await connection.close();\n } catch (error) {\n checks.push({\n id: 'tools-call-error',\n name: 'ToolsCallError',\n description: 'Tool returns error correctly',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: [\n {\n id: 'MCP-Error-Handling',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/basic/lifecycle'\n }\n ]\n });\n }\n\n return checks;\n }\n}\n\nexport class ToolsCallWithProgressScenario implements ClientScenario {\n name = 'tools-call-with-progress';\n readonly source = { introducedIn: '2025-06-18' } as const;\n description = `Test tool that reports progress notifications.\n\n**Server Implementation Requirements:**\n\nImplement tool \\`test_tool_with_progress\\` with no arguments.\n\n**Behavior**: If \\`_meta.progressToken\\` is provided in request:\n- Send progress notification: \\`0/100\\`\n- Wait ~50ms\n- Send progress notification: \\`50/100\\`\n- Wait ~50ms\n- Send progress notification: \\`100/100\\`\n\nIf no progress token provided, just execute with delays.\n\n**Returns**: Text content confirming execution\n\n**Progress Notification Format**:\n\n\\`\\`\\`json\n{\n \"method\": \"notifications/progress\",\n \"params\": {\n \"progressToken\": \"\",\n \"progress\": 50,\n \"total\": 100\n }\n}\n\\`\\`\\``;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n try {\n const connection = await connectToServer(serverUrl);\n const progressUpdates: Array = [];\n // TODO: investigate why await connection.client.callTool didn't work for progress.\n const result = await connection.client.request(\n {\n method: 'tools/call',\n params: {\n name: 'test_tool_with_progress',\n arguments: {},\n _meta: {\n progressToken: 'progress-test-1'\n }\n }\n },\n CallToolResultSchema,\n {\n onprogress: (progress) => {\n progressUpdates.push(progress);\n }\n }\n );\n\n const errors: string[] = [];\n if (progressUpdates.length === 0) {\n errors.push('No progress notifications received');\n } else if (progressUpdates.length < 3) {\n errors.push(\n `Expected at least 3 progress notifications, got ${progressUpdates.length}`\n );\n }\n\n if (progressUpdates.length >= 3) {\n const progress0 = progressUpdates[0].progress;\n const progress1 = progressUpdates[1].progress;\n const progress2 = progressUpdates[2].progress;\n\n if (!(progress0 <= progress1 && progress1 <= progress2)) {\n errors.push('Progress values should be increasing');\n }\n }\n\n checks.push({\n id: 'tools-call-with-progress',\n name: 'ToolsCallWithProgress',\n description: 'Tool reports progress notifications',\n status: errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: errors.length > 0 ? errors.join('; ') : undefined,\n specReferences: [\n {\n id: 'MCP-Progress',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/utilities/progress'\n }\n ],\n details: {\n progressCount: progressUpdates.length,\n progressNotifications: progressUpdates.map((n: Progress) => n),\n result\n }\n });\n\n await connection.close();\n } catch (error) {\n checks.push({\n id: 'tools-call-with-progress',\n name: 'ToolsCallWithProgress',\n description: 'Tool reports progress notifications',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: [\n {\n id: 'MCP-Progress',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/utilities/progress'\n }\n ]\n });\n }\n\n return checks;\n }\n}\n\nexport class ToolsCallSamplingScenario implements ClientScenario {\n name = 'tools-call-sampling';\n readonly source = { introducedIn: '2025-06-18' } as const;\n description = `Test tool that requests LLM sampling from client.\n\n**Server Implementation Requirements:**\n\nImplement tool \\`test_sampling\\` with argument:\n- \\`prompt\\` (string, required) - The prompt to send to the LLM\n\n**Behavior**: Request LLM sampling from the client using \\`sampling/createMessage\\`\n\n**Sampling Request**:\n\n\\`\\`\\`json\n{\n \"method\": \"sampling/createMessage\",\n \"params\": {\n \"messages\": [\n {\n \"role\": \"user\",\n \"content\": {\n \"type\": \"text\",\n \"text\": \"\"\n }\n }\n ],\n \"maxTokens\": 100\n }\n}\n\\`\\`\\`\n\n**Returns**: Text content with the LLM's response\n\n\\`\\`\\`json\n{\n \"content\": [\n {\n \"type\": \"text\",\n \"text\": \"LLM response: \"\n }\n ]\n}\n\\`\\`\\`\n\n**Implementation Note**: If the client doesn't support sampling (no \\`sampling\\` capability), return an error.`;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n try {\n const connection = await connectToServer(serverUrl);\n\n let samplingRequested = false;\n connection.client.setRequestHandler(\n CreateMessageRequestSchema,\n async (_request) => {\n samplingRequested = true;\n return {\n role: 'assistant',\n content: {\n type: 'text',\n text: 'This is a test response from the client'\n },\n model: 'test-model',\n stopReason: 'endTurn'\n };\n }\n );\n\n const result = await connection.client.callTool({\n name: 'test_sampling',\n arguments: {\n prompt: 'Test prompt for sampling'\n }\n });\n\n const errors: string[] = [];\n if (!samplingRequested) {\n errors.push('Server did not request sampling from client');\n }\n\n const content = (result as any).content;\n if (!content || content.length === 0) {\n errors.push('Tool did not return content');\n }\n\n checks.push({\n id: 'tools-call-sampling',\n name: 'ToolsCallSampling',\n description: 'Tool requests LLM sampling from client',\n status: errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: errors.length > 0 ? errors.join('; ') : undefined,\n specReferences: [\n {\n id: 'MCP-Sampling',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/utilities/sampling'\n }\n ],\n details: {\n samplingRequested,\n result\n }\n });\n\n await connection.close();\n } catch (error) {\n checks.push({\n id: 'tools-call-sampling',\n name: 'ToolsCallSampling',\n description: 'Tool requests LLM sampling from client',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: [\n {\n id: 'MCP-Sampling',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/utilities/sampling'\n }\n ]\n });\n }\n\n return checks;\n }\n}\n\nexport class ToolsCallElicitationScenario implements ClientScenario {\n name = 'tools-call-elicitation';\n readonly source = { introducedIn: '2025-06-18' } as const;\n description = `Test tool that requests user input (elicitation) from client.\n\n**Server Implementation Requirements:**\n\nImplement tool \\`test_elicitation\\` with argument:\n- \\`message\\` (string, required) - The message to show the user\n\n**Behavior**: Request user input from the client using \\`elicitation/create\\`\n\n**Elicitation Request**:\n\n\\`\\`\\`json\n{\n \"method\": \"elicitation/create\",\n \"params\": {\n \"message\": \"\",\n \"requestedSchema\": {\n \"type\": \"object\",\n \"properties\": {\n \"username\": {\n \"type\": \"string\",\n \"description\": \"User's response\"\n },\n \"email\": {\n \"type\": \"string\",\n \"description\": \"User's email address\"\n }\n },\n \"required\": [\"username\", \"email\"]\n }\n }\n}\n\\`\\`\\`\n\n**Returns**: Text content with the user's response\n\n\\`\\`\\`json\n{\n \"content\": [\n {\n \"type\": \"text\",\n \"text\": \"User response: \"\n }\n ]\n}\n\\`\\`\\`\n\n**Implementation Note**: If the client doesn't support elicitation (no \\`elicitation\\` capability), return an error.`;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n try {\n const connection = await connectToServer(serverUrl);\n\n let elicitationRequested = false;\n connection.client.setRequestHandler(\n ElicitRequestSchema,\n async (_request) => {\n elicitationRequested = true;\n return {\n action: 'accept',\n content: {\n username: 'testuser',\n email: 'test@example.com'\n }\n };\n }\n );\n\n const result = await connection.client.callTool({\n name: 'test_elicitation',\n arguments: {\n message: 'Please provide your information'\n }\n });\n\n const errors: string[] = [];\n if (!elicitationRequested) {\n errors.push('Server did not request elicitation from client');\n }\n\n const content = (result as any).content;\n if (!content || content.length === 0) {\n errors.push('Tool did not return content');\n }\n\n checks.push({\n id: 'tools-call-elicitation',\n name: 'ToolsCallElicitation',\n description: 'Tool requests user input from client',\n status: errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: errors.length > 0 ? errors.join('; ') : undefined,\n specReferences: [\n {\n id: 'MCP-Elicitation',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/utilities/elicitation'\n }\n ],\n details: {\n elicitationRequested,\n result\n }\n });\n\n await connection.close();\n } catch (error) {\n checks.push({\n id: 'tools-call-elicitation',\n name: 'ToolsCallElicitation',\n description: 'Tool requests user input from client',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: [\n {\n id: 'MCP-Elicitation',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/utilities/elicitation'\n }\n ]\n });\n }\n\n return checks;\n }\n}\n\nexport class ToolsCallAudioScenario implements ClientScenario {\n name = 'tools-call-audio';\n readonly source = { introducedIn: '2025-06-18' } as const;\n description = `Test calling a tool that returns audio content.\n\n**Server Implementation Requirements:**\n\nImplement tool \\`test_audio_content\\` with no arguments that returns:\n\n\\`\\`\\`json\n{\n \"content\": [\n {\n \"type\": \"audio\",\n \"data\": \"\",\n \"mimeType\": \"audio/wav\"\n }\n ]\n}\n\\`\\`\\`\n\n**Implementation Note**: Use a minimal test audio file`;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n try {\n const connection = await connectToServer(serverUrl);\n\n const result = await connection.client.callTool({\n name: 'test_audio_content',\n arguments: {}\n });\n\n // Validate response\n const errors: string[] = [];\n const content = (result as any).content;\n if (!content) errors.push('Missing content array');\n if (!Array.isArray(content)) errors.push('content is not an array');\n if (content && content.length === 0)\n errors.push('content array is empty');\n\n const audioContent =\n content && content.find((c: any) => c.type === 'audio');\n if (!audioContent) errors.push('No audio content found');\n if (audioContent && !audioContent.data)\n errors.push('Audio content missing data field');\n if (audioContent && !audioContent.mimeType)\n errors.push('Audio content missing mimeType field');\n if (audioContent && audioContent.mimeType !== 'audio/wav')\n errors.push(\n `Expected mimeType 'audio/wav', got '${audioContent.mimeType}'`\n );\n\n checks.push({\n id: 'tools-call-audio',\n name: 'ToolsCallAudio',\n description: 'Tool returns audio content',\n status: errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: errors.length > 0 ? errors.join('; ') : undefined,\n specReferences: [\n {\n id: 'MCP-Tools-Call',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/tools#calling-tools'\n }\n ],\n details: {\n hasAudioContent: !!audioContent,\n audioDataLength: audioContent?.data?.length || 0\n }\n });\n\n await connection.close();\n } catch (error) {\n checks.push({\n id: 'tools-call-audio',\n name: 'ToolsCallAudio',\n description: 'Tool returns audio content',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: [\n {\n id: 'MCP-Tools-Call',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/tools#calling-tools'\n }\n ]\n });\n }\n\n return checks;\n }\n}\n\nexport class ToolsCallEmbeddedResourceScenario implements ClientScenario {\n name = 'tools-call-embedded-resource';\n readonly source = { introducedIn: '2025-06-18' } as const;\n description = `Test calling a tool that returns embedded resource content.\n\n**Server Implementation Requirements:**\n\nImplement tool \\`test_embedded_resource\\` with no arguments that returns:\n\n\\`\\`\\`json\n{\n \"content\": [\n {\n \"type\": \"resource\",\n \"resource\": {\n \"uri\": \"test://embedded-resource\",\n \"mimeType\": \"text/plain\",\n \"text\": \"This is an embedded resource content.\"\n }\n }\n ]\n}\n\\`\\`\\``;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n try {\n const connection = await connectToServer(serverUrl);\n\n const result = await connection.client.callTool({\n name: 'test_embedded_resource',\n arguments: {}\n });\n\n // Validate response\n const errors: string[] = [];\n const content = (result as any).content;\n if (!content) errors.push('Missing content array');\n if (!Array.isArray(content)) errors.push('content is not an array');\n if (content && content.length === 0)\n errors.push('content array is empty');\n\n const resourceContent =\n content && content.find((c: any) => c.type === 'resource');\n if (!resourceContent) errors.push('No resource content found');\n if (resourceContent && !resourceContent.resource)\n errors.push('Resource content missing resource field');\n if (resourceContent?.resource) {\n if (!resourceContent.resource.uri)\n errors.push('Resource missing uri field');\n if (!resourceContent.resource.mimeType)\n errors.push('Resource missing mimeType field');\n if (!resourceContent.resource.text && !resourceContent.resource.blob) {\n errors.push('Resource missing both text and blob fields');\n }\n }\n\n checks.push({\n id: 'tools-call-embedded-resource',\n name: 'ToolsCallEmbeddedResource',\n description: 'Tool returns embedded resource content',\n status: errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: errors.length > 0 ? errors.join('; ') : undefined,\n specReferences: [\n {\n id: 'MCP-Tools-Call',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/tools#calling-tools'\n }\n ],\n details: {\n hasResourceContent: !!resourceContent,\n resourceUri: resourceContent?.resource?.uri\n }\n });\n\n await connection.close();\n } catch (error) {\n checks.push({\n id: 'tools-call-embedded-resource',\n name: 'ToolsCallEmbeddedResource',\n description: 'Tool returns embedded resource content',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: [\n {\n id: 'MCP-Tools-Call',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/tools#calling-tools'\n }\n ]\n });\n }\n\n return checks;\n }\n}\n",[],[128,233,243,245],"453f5707-ead3-4119-85b5-9be555a5c269","stateless.ts","dbff3f0e-ad13-11f1-8600-1607ee4eb77e",30,["D",1789043623164],"/**\n * Stateless MCP test scenarios for MCP servers (SEP-2575)\n */\n\nimport {\n ClientScenario,\n ConformanceCheck,\n DRAFT_PROTOCOL_VERSION\n} from '../../types.ts';\nimport {\n buildStandardHeaders,\n readSseJsonRpcResponse\n} from './stateless-client.ts';\n\nconst SPEC_REF = [\n {\n id: 'SEP-2575',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575'\n }\n];\n\nexport class ServerStatelessScenario implements ClientScenario {\n name = 'server-stateless';\n readonly source = { introducedIn: DRAFT_PROTOCOL_VERSION } as const;\n description = `Test stateless MCP server architecture (SEP-2575).\n\n**Server Implementation Requirements:**\n\n**Endpoints**:\n- \\`server/discover\\`: Returns supportedVersions, capabilities, and serverInfo metadata.\n- \\`tools/call\\`: Implement structural test tools like \\`test_missing_capability\\` requiring explicit capabilities in \\`_meta\\`.\n\n**Grouped Specification Requirements**:\n\n1. **Per-Request _meta Validation (4 Checks)**\n - Rejects requests missing \\`_meta\\` or lacking structural required internal subfields (\\`protocolVersion\\`, \\`clientInfo\\`, \\`clientCapabilities\\`) with a JSON-RPC \\`-32602 Invalid params\\` error signature.\n2. **Discovery & Capabilities (3 Checks)**\n - Implements \\`server/discover\\` mapping exact mandatory protocol elements.\n - Dynamically checks prompt capability declaration constraints, validates that active RPC handlers match advertised discovery capacities.\n3. **Version Negotiation & Headers (3 Checks)**\n - Mismatched or unknown protocol versions must return an \\`UnsupportedProtocolVersionError\\` (HTTP status code \\`400 Bad Request\\`) carrying precise version tracking arrays.\n - Absent or altered protocol version header metadata must trigger a \\`-32001 Header Mismatch\\` error with an HTTP 400 boundary state.\n4. **Client Capability Constraints (2 Checks)**\n - Accessing platform capabilities without explicit declaration drops requests with a \\`-32003 MissingRequiredClientCapabilityError\\` containing needed capabilities, returning an HTTP status code \\`400 Bad Request\\`.\n5. **Methods & Routing Mechanics (5 Checks)**\n - Removed legacy endpoints (\\`initialize\\`, \\`ping\\`, \\`logging/setLevel\\`, etc.) or generic unknown methods must cleanly yield an HTTP status code \\`404 Not Found\\` alongside a JSON-RPC \\`-32601 Method not found\\` payload. All error returns must preserve original request ID mappings.\n - Validates response streams contain only \\`IncompleteResult\\` chunks and never independent top-level JSON-RPC requests, while enforcing that no log messages are emitted when \\`_meta.../logLevel\\` is omitted.\n6. **Subscription Streams & Filtering (3 Checks)**\n - Mandates that \\`notifications/subscriptions/acknowledged\\` is the first message on a \\`subscriptions/listen\\` stream, and that subsequent notifications carry a matching \\`_meta.../subscriptionId\\`.\n - Verifies strict containment where servers do not dispatch notification types that fall outside the client's explicit requested subscription filter list.\n7. **Dynamic List Mutations (2 Checks)**\n - Evaluates that list-changed capable servers notify active listen streams with \\`promptsListChanged: true\\` or \\`toolsListChanged: true\\` upon live configuration or capability modifications. `;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n const timestamp = new Date().toISOString();\n\n // Executes a validation rule and pushes the structural result metadata.\n async function runCheck(\n id: string,\n name: string,\n description: string,\n fn: () =>\n | Promise<{\n error?: string;\n warning?: boolean;\n skipped?: boolean;\n details?: any;\n } | void>\n | ({\n error?: string;\n warning?: boolean;\n skipped?: boolean;\n details?: any;\n } | void),\n fallbackDetails = {}\n ) {\n try {\n const result = await fn();\n const errorMessage = result?.error;\n // SHOULD-level requirements report WARNING rather than FAILURE\n // (severity follows the spec keyword).\n const status = errorMessage\n ? result?.warning\n ? 'WARNING'\n : 'FAILURE'\n : result?.skipped\n ? 'SKIPPED'\n : 'SUCCESS';\n\n checks.push({\n id,\n name,\n description,\n status,\n timestamp,\n errorMessage: errorMessage || undefined,\n specReferences: SPEC_REF,\n details: result?.details || fallbackDetails\n });\n } catch (e) {\n checks.push({\n id,\n name,\n description,\n status: 'FAILURE',\n timestamp,\n errorMessage: String(e),\n specReferences: SPEC_REF,\n details: fallbackDetails\n });\n }\n }\n\n // Helper to send raw RPC requests via fetch\n const sendRpc = async (\n method: string,\n params?: any,\n headersOverrides?: Record,\n id: string | number | null = 1\n ) => {\n // The cross-cutting SEP-2243 headers (Mcp-Method, Mcp-Name, Accept,\n // MCP-Protocol-Version) are not what this scenario exercises, so they\n // are always sent conformantly; overrides only alter the dimension a\n // test case is about (issue #312).\n const headers = buildStandardHeaders(method, params, {\n headers: headersOverrides\n });\n\n const body = JSON.stringify({\n jsonrpc: '2.0',\n id,\n method,\n ...(params !== undefined ? { params } : {})\n });\n\n const res = await fetch(serverUrl, { method: 'POST', headers, body });\n let data: any = null;\n // Servers may answer single requests over text/event-stream; pick the\n // JSON-RPC message matching this request id instead of failing to parse\n // the stream as JSON.\n const contentType =\n typeof res.headers?.get === 'function'\n ? (res.headers.get('content-type') ?? '')\n : '';\n if (contentType.includes('text/event-stream')) {\n const { body: matched } = await readSseJsonRpcResponse(res, id);\n data = matched ?? null;\n } else {\n try {\n data = await res.json();\n } catch {\n // Response might not be JSON\n }\n }\n return { res, data };\n };\n\n // Helper to read multi-frame streaming endpoints (like subscriptions/listen).\n // `onFirstFrame` runs once after the first frame arrives (i.e. after the\n // server has acknowledged the subscription) so callers can trigger\n // side effects on a separate connection while this stream is still open.\n const listenToStream = async (\n method: string,\n params?: any,\n maxFrames = 3,\n timeoutMs = 1000,\n onFirstFrame?: () => Promise\n ): Promise => {\n const headers = buildStandardHeaders(method, params);\n\n const body = JSON.stringify({\n jsonrpc: '2.0',\n id: Date.now(),\n method,\n ...(params !== undefined ? { params } : {})\n });\n\n const controller = new AbortController();\n const timeoutId = setTimeout(() => {\n controller.abort();\n }, timeoutMs);\n\n try {\n const res = await fetch(serverUrl, {\n method: 'POST',\n headers,\n body,\n signal: controller.signal\n });\n\n if (!res.body) {\n clearTimeout(timeoutId);\n return [];\n }\n\n const reader = res.body.getReader();\n const decoder = new TextDecoder();\n const frames: any[] = [];\n let buffer = '';\n let firstFrameCallbackFired = false;\n const maybeFireFirstFrameCallback = async () => {\n if (firstFrameCallbackFired || frames.length === 0 || !onFirstFrame)\n return;\n firstFrameCallbackFired = true;\n try {\n await onFirstFrame();\n } catch {\n // The trigger failed; the caller inspects its own captured result.\n }\n };\n\n try {\n while (frames.length < maxFrames) {\n let value: Uint8Array | undefined;\n let done = false;\n try {\n ({ value, done } = await reader.read());\n } catch {\n // The stream was aborted (timeout) or dropped. A compliant\n // server holds a subscriptions/listen stream open indefinitely,\n // so hitting the timeout is the normal way these reads end —\n // return whatever frames arrived before it fired.\n break;\n }\n\n if (value) {\n buffer += decoder.decode(value, { stream: true });\n const lines = buffer.split(/\\r?\\n/);\n buffer = lines.pop() || '';\n\n for (const line of lines) {\n const cleanLine = line.trim();\n if (!cleanLine) continue;\n\n const jsonText = cleanLine.startsWith('data:')\n ? cleanLine.replace(/^data:\\s*/, '')\n : cleanLine;\n try {\n frames.push(JSON.parse(jsonText));\n } catch {\n // Keep segment buffering\n }\n }\n await maybeFireFirstFrameCallback();\n }\n\n if (done) {\n const finalLine = buffer.trim();\n if (finalLine) {\n const jsonText = finalLine.startsWith('data:')\n ? finalLine.replace(/^data:\\s*/, '')\n : finalLine;\n try {\n frames.push(JSON.parse(jsonText));\n } catch {\n // Trailing formatting mismatch\n }\n }\n break;\n }\n }\n } finally {\n reader.releaseLock();\n }\n\n clearTimeout(timeoutId);\n return frames;\n } catch {\n clearTimeout(timeoutId);\n return [];\n }\n };\n\n const validMeta = {\n 'io.modelcontextprotocol/protocolVersion': DRAFT_PROTOCOL_VERSION,\n 'io.modelcontextprotocol/clientInfo': {\n name: 'conformance-client',\n version: '1.0.0'\n },\n 'io.modelcontextprotocol/clientCapabilities': {}\n };\n\n // Helper to check JSON-RPC ID matching on error responses\n const checkErrorId = (data: any, expectedId: string | number) => {\n if (data && data.error) {\n if (data.id !== expectedId) {\n checks.push({\n id: 'sep-2575-http-server-error-jsonrpc-id',\n name: 'HttpServerErrorJsonrpcId',\n description: 'All error responses carry the request JSON-RPC id',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Expected error response id ${expectedId}, got ${data.id}`,\n specReferences: SPEC_REF\n });\n }\n }\n };\n\n // ==========================================\n // 1. Per-request _meta Validation (4 Checks)\n // ==========================================\n const metaValidationTestCases = [\n {\n slug: 'missing-meta',\n description:\n 'Rejects request with missing _meta with -32602 Invalid params',\n params: {},\n rpcId: 101\n },\n {\n slug: 'missing-protocol-version',\n description:\n 'Rejects request with _meta missing io.modelcontextprotocol/protocolVersion',\n params: {\n _meta: {\n 'io.modelcontextprotocol/clientInfo':\n validMeta['io.modelcontextprotocol/clientInfo'],\n 'io.modelcontextprotocol/clientCapabilities':\n validMeta['io.modelcontextprotocol/clientCapabilities']\n }\n },\n rpcId: 102\n },\n {\n slug: 'missing-client-info',\n description:\n 'Rejects request with _meta missing io.modelcontextprotocol/clientInfo',\n params: {\n _meta: {\n 'io.modelcontextprotocol/protocolVersion':\n validMeta['io.modelcontextprotocol/protocolVersion'],\n 'io.modelcontextprotocol/clientCapabilities':\n validMeta['io.modelcontextprotocol/clientCapabilities']\n }\n },\n rpcId: 103\n },\n {\n slug: 'missing-client-capabilities',\n description:\n 'Rejects request with _meta missing io.modelcontextprotocol/clientCapabilities',\n params: {\n _meta: {\n 'io.modelcontextprotocol/protocolVersion':\n validMeta['io.modelcontextprotocol/protocolVersion'],\n 'io.modelcontextprotocol/clientInfo':\n validMeta['io.modelcontextprotocol/clientInfo']\n }\n },\n rpcId: 104\n }\n ];\n for (const testCase of metaValidationTestCases) {\n await runCheck(\n `sep-2575-request-meta-invalid-${testCase.slug}`,\n 'RequestMetaInvalid',\n testCase.description,\n async () => {\n const { data } = await sendRpc(\n 'server/discover',\n testCase.params,\n undefined,\n testCase.rpcId\n );\n checkErrorId(data, testCase.rpcId);\n\n if (data?.error?.code !== -32602) {\n return {\n error: `Expected error code -32602, got ${data?.error?.code}`,\n details: { fieldIssue: testCase.slug, response: data }\n };\n }\n return { details: { fieldIssue: testCase.slug, response: data } };\n },\n { fieldIssue: testCase.slug }\n );\n }\n\n // ==========================================\n // 2. Discovery & Capabilities (4 Checks)\n // ==========================================\n let discoverSupportedVersions: string[] = [];\n let discoverCapabilities: any = {};\n let discoverResult: any = null;\n let discoverRpcError: any = null;\n\n try {\n const { data } = await sendRpc(\n 'server/discover',\n { _meta: validMeta },\n undefined,\n 201\n );\n discoverResult = data?.result;\n\n if (Array.isArray(discoverResult?.supportedVersions)) {\n discoverSupportedVersions = discoverResult.supportedVersions;\n }\n if (\n discoverResult?.capabilities &&\n typeof discoverResult.capabilities === 'object'\n ) {\n discoverCapabilities = discoverResult.capabilities;\n }\n } catch (e) {\n discoverRpcError = e;\n }\n\n await runCheck(\n 'sep-2575-server-implements-discover',\n 'ServerImplementsDiscover',\n 'Servers MUST implement server/discover.',\n () => {\n if (discoverRpcError)\n return { error: `Discovery failed: ${discoverRpcError.message}` };\n if (\n !discoverResult?.supportedVersions ||\n !discoverResult?.capabilities ||\n !discoverResult?.serverInfo\n ) {\n return {\n error: 'Missing mandatory fields in discover response setup',\n details: { result: discoverResult }\n };\n }\n return { details: { result: discoverResult } };\n }\n );\n\n await runCheck(\n 'sep-2575-server-declares-prompts-in-discover',\n 'ServerDeclaresPromptsInDiscover',\n 'Servers that support prompts MUST declare the prompts capability in their DiscoverResult.',\n async () => {\n if (discoverRpcError)\n return { error: `Prerequisite missing: ${discoverRpcError.message}` };\n const { data: promptsData } = await sendRpc(\n 'prompts/list',\n { _meta: validMeta },\n undefined,\n 203\n );\n const methodExists =\n promptsData?.result?.prompts || promptsData?.error?.code !== -32601;\n\n if (methodExists && !discoverCapabilities.prompts) {\n return {\n error:\n 'Server handles prompts but did not declare prompts capability in discover result',\n details: { discoverCapabilities }\n };\n }\n return { details: { discoverCapabilities, response: promptsData } };\n }\n );\n\n // Dynamic verification helper to check capability consistency against true handlers\n await runCheck(\n 'sep-2575-discover-capabilities-match-handlers',\n 'DiscoverCapabilitiesMatchHandlers',\n 'capabilities matches what the server honors on real RPC calls',\n async () => {\n if (discoverRpcError)\n return {\n error: `Discovery runtime check failed: ${discoverRpcError.message}`\n };\n const { data: toolsData } = await sendRpc(\n 'tools/list',\n { _meta: validMeta },\n undefined,\n 202\n );\n\n if (discoverCapabilities.tools) {\n const toolsPassed = Array.isArray(toolsData?.result?.tools);\n if (!toolsPassed)\n return {\n error: 'Advertised tools capability but tools/list call failed',\n details: { response: toolsData }\n };\n } else {\n if (toolsData?.error?.code !== -32601)\n return {\n error:\n 'Did not advertise tools capability but tools/list did not yield -32601',\n details: { response: toolsData }\n };\n }\n return { details: { response: toolsData } };\n }\n );\n\n // ==========================================\n // 3. Version Negotiation & Headers (3 Checks)\n // ==========================================\n const unsupportedMeta = {\n ...validMeta,\n 'io.modelcontextprotocol/protocolVersion': 'v999.0.0'\n };\n const response301 = await sendRpc(\n 'server/discover',\n { _meta: unsupportedMeta },\n { 'MCP-Protocol-Version': 'v999.0.0' },\n 301\n ).catch(() => null);\n const res301: any = response301?.res ?? null;\n const data301: any = response301?.data ?? null;\n if (data301) checkErrorId(data301, 301);\n\n await runCheck(\n 'sep-2575-server-unsupported-version-error',\n 'ServerUnsupportedVersionError',\n 'If the server does not implement the requested version (whether the version is unknown to the server, or is a known version the server has chosen not to support), it MUST respond with an UnsupportedProtocolVersionError listing the versions it does support.',\n () => {\n if (!data301)\n return { error: 'Unsupported version invocation failed completely' };\n const errSupportedVersions = data301?.error?.data?.supported;\n const hasErrVersions =\n Array.isArray(errSupportedVersions) &&\n errSupportedVersions.length > 0;\n\n const validMatch =\n hasErrVersions &&\n errSupportedVersions.every((v: string) =>\n discoverSupportedVersions.includes(v)\n );\n if (!validMatch)\n return {\n error: `Returned supported versions data layout does not correlate to active server metrics: ${JSON.stringify(errSupportedVersions)}`\n };\n return { details: { response: data301 } };\n }\n );\n\n await runCheck(\n 'sep-2575-http-server-unsupported-version-400',\n 'HttpServerUnsupportedVersion400',\n 'If the server does not implement the requested protocol version, it MUST respond with 400 Bad Request and an UnsupportedProtocolVersionError listing its supported versions.',\n () => {\n if (!res301)\n return { error: 'Network transaction context unavailable' };\n if (res301.status !== 400)\n return {\n error: `Expected HTTP 400 Bad Request, got status code ${res301.status}`\n };\n return { details: { response: data301 } };\n }\n );\n\n const headerMismatchMeta = {\n ...validMeta,\n 'io.modelcontextprotocol/protocolVersion': 'v999.0.0'\n };\n const responseAbsent = await sendRpc(\n 'server/discover',\n { _meta: headerMismatchMeta },\n { 'MCP-Protocol-Version': DRAFT_PROTOCOL_VERSION },\n 302\n ).catch(() => null);\n const resAbsent: any = responseAbsent?.res ?? null;\n const dataAbsent: any = responseAbsent?.data ?? null;\n\n await runCheck(\n 'sep-2575-http-server-header-mismatch-400',\n 'HttpServerHeaderMismatch400',\n 'If the values do not match, the server MUST reject the request with 400 Bad Request and a HeaderMismatch JSON-RPC error.',\n () => {\n if (!resAbsent)\n return { error: 'Header verification endpoint network hit failed' };\n if (resAbsent.status !== 400 || dataAbsent?.error?.code !== -32001) {\n return {\n error: `Expected HTTP 400 and JSON-RPC error -32001, got status ${resAbsent.status} with code ${dataAbsent?.error?.code}`\n };\n }\n return { details: { response: dataAbsent } };\n }\n );\n\n // ==========================================\n // 4. Client Capability Constraints (2 Checks)\n // ==========================================\n const response401 = await sendRpc(\n 'tools/call',\n { name: 'test_missing_capability', arguments: {}, _meta: validMeta },\n undefined,\n 401\n ).catch(() => null);\n const res401: any = response401?.res ?? null;\n const data401: any = response401?.data ?? null;\n if (data401) checkErrorId(data401, 401);\n\n // Determine if this server actively enforces client capabilities\n const serverRequiresCapability = data401?.error?.code === -32003;\n\n await runCheck(\n 'sep-2575-server-rejects-undeclared-capability',\n 'ServerRejectsUndeclaredCapability',\n 'A server MUST NOT rely on capabilities the client has not declared. If processing a request requires a capability the client did not include in io.modelcontextprotocol/clientCapabilities, the server MUST return a MissingRequiredClientCapabilityError (-32003).',\n () => {\n if (!res401)\n return {\n error:\n 'Capability checking call sequence timed out or dropped connection'\n };\n\n if (!serverRequiresCapability) {\n // The server didn't return -32003, so this requirement isn't\n // exercised for this method. Report SKIPPED rather than a green PASS.\n return {\n skipped: true,\n details: {\n note: 'Skipped requirement tracking: Server returned a non-32003 response, indicating it does not require explicit client capability authorization constraints for this method.',\n response: data401\n }\n };\n }\n\n // If it DOES return -32003, strictly validate the requirement payload structure\n const reqCaps = data401?.error?.data?.requiredCapabilities;\n if (!Array.isArray(reqCaps) || !reqCaps.includes('sampling')) {\n return {\n error: `Server responded with error code -32003 but failed to provide an array containing the expected 'sampling' capability in error.data.requiredCapabilities`,\n details: { response: data401 }\n };\n }\n\n return { details: { response: data401 } };\n }\n );\n\n await runCheck(\n 'sep-2575-missing-capability-http-400',\n 'MissingCapabilityHttp400',\n 'On HTTP, the response status MUST be 400 Bad Request [for MissingRequiredClientCapabilityError].',\n () => {\n if (!res401)\n return {\n error: 'Network transport layer layer context failed to instantiate'\n };\n\n if (!serverRequiresCapability) {\n // No -32003 means the HTTP-400 requirement doesn't apply here.\n // Report SKIPPED rather than a green PASS.\n return {\n skipped: true,\n details: {\n note: 'Skipped status tracking: Server did not return a MissingRequiredClientCapabilityError.',\n httpStatus: res401.status\n }\n };\n }\n\n // If it did trigger the capability error, it MUST use HTTP 400\n if (res401.status !== 400) {\n return {\n error: `Expected HTTP status code 400 Bad Request for an undeclared capability error response, got ${res401.status}`,\n details: { response: data401 }\n };\n }\n\n return { details: { response: data401 } };\n }\n );\n\n // ==========================================\n // 5. Methods & Routing Mechanics (5 Checks)\n // ==========================================\n const expectedSlugs = [\n 'initialize',\n 'ping',\n 'logging/setLevel',\n 'resources/subscribe',\n 'resources/unsubscribe'\n ];\n for (const slug of expectedSlugs) {\n const cleanMethodParam = slug.toLowerCase().replace('/', '-');\n const response500 = await sendRpc(\n slug,\n { _meta: validMeta },\n undefined,\n 500\n ).catch(() => null);\n const res500: any = response500?.res ?? null;\n const data500: any = response500?.data ?? null;\n\n await runCheck(\n `sep-2575-http-server-method-not-found-404-${cleanMethodParam}`,\n `HttpServerMethodNotFound404${slug.replace('/', '')}`,\n `If the server does not implement the removed RPC method '${slug}', it MUST respond with 404 Not Found and a JSON-RPC error with code -32601 (Method not found).`,\n () => {\n if (!res500 || !data500)\n return {\n error:\n 'Removed method validation hit dropped connections unexpectedly'\n };\n if (res500.status !== 404 || data500?.error?.code !== -32601) {\n return {\n error: `Expected HTTP 404 and code -32601 for removed methods, got HTTP ${res500.status} and code ${data500?.error?.code}`\n };\n }\n return { details: { response: data500 } };\n }\n );\n }\n\n // Explicit generic unknown method fallback test\n const response601 = await sendRpc(\n 'unknown/method',\n { _meta: validMeta },\n undefined,\n 601\n ).catch(() => null);\n const res601: any = response601?.res ?? null;\n const data601: any = response601?.data ?? null;\n\n await runCheck(\n 'sep-2575-http-server-method-not-found-404',\n 'HttpServerMethodNotFound404',\n 'If the server does not implement the requested RPC method, it MUST respond with 404 Not Found and a JSON-RPC error with code -32601 (Method not found).',\n () => {\n if (!res601 || !data601)\n return {\n error: 'Unknown fallback test target returned an invalid layout'\n };\n if (res601.status !== 404 || data601?.error?.code !== -32601) {\n return {\n error: `Expected HTTP 404 and JSON-RPC error code -32601, got HTTP ${res601.status} and code ${data601?.error?.code}`\n };\n }\n return { details: { response: data601 } };\n }\n );\n\n await runCheck(\n 'sep-2575-http-server-no-independent-requests-on-stream',\n 'HttpServerNoIndependentRequestsOnStream',\n 'Request stream contains only IncompleteResult, never independent JSON-RPC requests',\n async () => {\n const frames = await listenToStream(\n 'tools/call',\n {\n name: 'test_streaming_elicitation',\n arguments: {},\n _meta: validMeta\n },\n 3,\n 600\n );\n\n if (frames.length === 0) {\n return {\n error:\n 'Failed to receive progressive stream chunk execution frames from tools/call handler endpoint'\n };\n }\n\n // If the call was rejected outright (e.g. the diagnostic tool does\n // not exist), nothing was streamed and the requirement was not\n // exercised - report SKIPPED rather than a vacuous SUCCESS.\n if (frames.every((f) => f?.error !== undefined)) {\n return {\n skipped: true,\n details: {\n note: 'Server does not expose diagnostic tool test_streaming_elicitation; the response stream could not be exercised.',\n response: frames[0]\n }\n };\n }\n\n const hasIndependentRequest = frames.some(\n (f) => f.method && !f.method.startsWith('notifications/')\n );\n if (hasIndependentRequest) {\n return {\n error:\n 'Server emitted an independent standard request layout inside a response progress execution block stream context',\n details: { frames }\n };\n }\n return { details: { inspectedFramesCount: frames.length } };\n }\n );\n\n await runCheck(\n 'sep-2575-server-no-log-without-loglevel',\n 'ServerNoLogWithoutLogLevel',\n \"No notifications/message for requests that didn't set _meta.../logLevel\",\n async () => {\n const frames = await listenToStream(\n 'tools/call',\n { name: 'test_logging_tool', arguments: {}, _meta: validMeta },\n 3,\n 500\n );\n\n if (frames.length === 0) {\n return {\n error:\n 'Logging target endpoint context dropped or failed to yield frame structures'\n };\n }\n\n // If the call was rejected outright (e.g. the diagnostic tool does\n // not exist), the server never had anything to log and the\n // requirement was not exercised - report SKIPPED rather than a\n // vacuous SUCCESS.\n if (frames.every((f) => f?.error !== undefined)) {\n return {\n skipped: true,\n details: {\n note: 'Server does not expose diagnostic tool test_logging_tool; the no-log-without-logLevel requirement could not be exercised.',\n response: frames[0]\n }\n };\n }\n\n const logFrame = frames.find(\n (f) => f.method === 'notifications/message'\n );\n if (logFrame) {\n return {\n error:\n 'Server dispatched a notifications/message payload chunk even though the client request did not authorize a log level context descriptor',\n details: { logFrame }\n };\n }\n return { details: { framesFound: frames.length } };\n }\n );\n\n // ==========================================\n // 6. Subscription Streams & Filtering (3 Checks)\n // ==========================================\n const subscriptionParams = {\n _meta: validMeta,\n notifications: { toolsListChanged: true }\n };\n\n // Open a tools-filtered stream and (best-effort) trigger a tool-list\n // change once it is acknowledged, so the stream carries at least one\n // post-acknowledgment notification for the subscription-id check.\n let streamFrames: any[] = [];\n try {\n streamFrames = await listenToStream(\n 'subscriptions/listen',\n subscriptionParams,\n 2,\n 800,\n async () => {\n await sendRpc('tools/call', {\n name: 'test_trigger_tool_change',\n arguments: {},\n _meta: validMeta\n });\n }\n );\n } catch {\n // Stream pipeline tracking failed\n }\n\n await runCheck(\n 'sep-2575-server-sends-subscription-ack',\n 'ServerSendsSubscriptionAck',\n 'notifications/subscriptions/acknowledged is the first message on a subscriptions/listen stream',\n () => {\n if (streamFrames[0]?.error?.code === -32601) {\n return {\n skipped: true,\n details: {\n note: 'Server does not support subscriptions/listen (Method not found)'\n }\n };\n }\n if (streamFrames.length === 0) {\n return {\n error:\n 'Failed to open or receive frames from the subscriptions/listen stream endpoint'\n };\n }\n const firstFrame = streamFrames[0];\n if (firstFrame?.method !== 'notifications/subscriptions/acknowledged') {\n return {\n error: `Expected first frame method to be 'notifications/subscriptions/acknowledged', got '${firstFrame?.method}'`,\n details: { firstFrame }\n };\n }\n return { details: { firstFrame } };\n }\n );\n\n await runCheck(\n 'sep-2575-server-tags-subscription-id',\n 'ServerTagsSubscriptionId',\n 'Listen-stream notifications carry _meta.../subscriptionId',\n () => {\n if (streamFrames[0]?.error?.code === -32601) {\n return {\n skipped: true,\n details: {\n note: 'Server does not support subscriptions/listen (Method not found)'\n }\n };\n }\n if (streamFrames.length === 0) {\n return {\n error:\n 'Failed to open stream line or tracking frames are missing completely'\n };\n }\n\n // Every notification delivered on the stream (the acknowledgment and\n // anything after it) must carry the subscription id in params._meta.\n const notificationFrames = streamFrames.filter(\n (f) =>\n typeof f?.method === 'string' &&\n f.method.startsWith('notifications/')\n );\n if (notificationFrames.length === 0) {\n return {\n error:\n 'subscriptions/listen stream carried no notification frames to inspect',\n details: { streamFrames }\n };\n }\n\n const untaggedFrames = notificationFrames.filter(\n (f) => !f?.params?._meta?.['io.modelcontextprotocol/subscriptionId']\n );\n if (untaggedFrames.length > 0) {\n return {\n error: `${untaggedFrames.length} of ${notificationFrames.length} listen-stream notification(s) are missing io.modelcontextprotocol/subscriptionId in params._meta`,\n details: { untaggedFrames }\n };\n }\n\n const subId =\n notificationFrames[0]?.params?._meta?.[\n 'io.modelcontextprotocol/subscriptionId'\n ];\n return {\n details: {\n subscriptionId: subId,\n inspectedNotificationCount: notificationFrames.length\n }\n };\n }\n );\n\n await runCheck(\n 'sep-2575-server-honors-notification-filter',\n 'ServerHonorsNotificationFilter',\n \"Server doesn't send notification types the client didn't request\",\n async () => {\n const narrowParams = {\n _meta: validMeta,\n notifications: { promptsListChanged: true }\n };\n\n // Open a stream filtered to prompts only, then mutate the *tool* list\n // on a separate connection once the subscription is acknowledged. A\n // compliant server must not deliver the resulting tools notification\n // to this stream.\n const narrowFrames = await listenToStream(\n 'subscriptions/listen',\n narrowParams,\n 3,\n 1500,\n async () => {\n await sendRpc('tools/call', {\n name: 'test_trigger_tool_change',\n arguments: {},\n _meta: validMeta\n });\n }\n );\n\n if (narrowFrames[0]?.error?.code === -32601) {\n return {\n skipped: true,\n details: {\n note: 'Server does not support subscriptions/listen (Method not found)'\n }\n };\n }\n if (narrowFrames.length === 0) {\n return {\n error:\n 'Strict subscription filtering line failed to return communication frames'\n };\n }\n\n const leakedToolFrame = narrowFrames.find(\n (f) => f?.method === 'notifications/tools/list_changed'\n );\n\n if (leakedToolFrame) {\n return {\n error:\n 'Server leaked a tools/list-changed notification over a stream explicitly filtered to prompts only',\n details: { leakedToolFrame }\n };\n }\n return { details: { narrowFramesCount: narrowFrames.length } };\n }\n );\n\n // ==========================================\n // 7. Dynamic List Mutations (2 Checks)\n // ==========================================\n await runCheck(\n 'sep-2575-server-sends-prompts-list-changed-on-subscription',\n 'ServerSendsPromptsListChangedOnSubscription',\n 'List-changed-capable servers notify listen streams with promptsListChanged: true (SHOULD)',\n async () => {\n // Automatically pass/skip if the server didn't declare this capability during discovery\n if (!discoverCapabilities?.prompts?.listChanged) {\n return {\n skipped: true,\n details: {\n note: 'Server did not declare prompts.listChanged capability in server/discover'\n }\n };\n }\n\n const promptsParams = {\n _meta: validMeta,\n notifications: { promptsListChanged: true }\n };\n\n // Open the subscription first; mutate the prompt list on a separate\n // connection once it is acknowledged. A compliant server only\n // notifies streams that are open at the time of the change.\n let trigger: any = null;\n const frames = await listenToStream(\n 'subscriptions/listen',\n promptsParams,\n 2,\n 1500,\n async () => {\n trigger = await sendRpc('tools/call', {\n name: 'test_trigger_prompt_change',\n arguments: {},\n _meta: validMeta\n });\n }\n );\n if (trigger?.data?.error?.code === -32601) {\n return {\n skipped: true,\n details: {\n note: 'Server does not expose diagnostic hook test_trigger_prompt_change to mutate lists'\n }\n };\n }\n\n if (frames.length === 0) {\n return {\n warning: true,\n error:\n 'Failed to open or receive frames from the subscriptions/listen stream endpoint'\n };\n }\n\n const changeFrame = frames.find(\n (f) => f.method === 'notifications/prompts/list_changed'\n );\n if (!changeFrame) {\n return {\n warning: true,\n error:\n 'Mutated the prompt list but no notifications/prompts/list_changed arrived on the open subscription stream. This is a SHOULD requirement.'\n };\n }\n return { details: { changeFrame } };\n }\n );\n\n await runCheck(\n 'sep-2575-server-sends-tools-list-changed-on-subscription',\n 'ServerSendsToolsListChangedOnSubscription',\n 'List-changed-capable servers notify listen streams with toolsListChanged: true (SHOULD)',\n async () => {\n // Automatically pass/skip if the server didn't declare this capability during discovery\n if (!discoverCapabilities?.tools?.listChanged) {\n return {\n skipped: true,\n details: {\n note: 'Server did not declare tools.listChanged capability in server/discover'\n }\n };\n }\n\n const toolsParams = {\n _meta: validMeta,\n notifications: { toolsListChanged: true }\n };\n\n // Open the subscription first; mutate the tool list on a separate\n // connection once it is acknowledged. A compliant server only\n // notifies streams that are open at the time of the change.\n let trigger: any = null;\n const frames = await listenToStream(\n 'subscriptions/listen',\n toolsParams,\n 2,\n 1500,\n async () => {\n trigger = await sendRpc('tools/call', {\n name: 'test_trigger_tool_change',\n arguments: {},\n _meta: validMeta\n });\n }\n );\n if (trigger?.data?.error?.code === -32601) {\n return {\n skipped: true,\n details: {\n note: 'Server does not expose diagnostic hook test_trigger_tool_change to mutate lists'\n }\n };\n }\n\n if (frames.length === 0) {\n return {\n warning: true,\n error:\n 'Failed to open or receive frames from the subscriptions/listen stream endpoint'\n };\n }\n\n const changeFrame = frames.find(\n (f) => f.method === 'notifications/tools/list_changed'\n );\n if (!changeFrame) {\n return {\n warning: true,\n error:\n 'Mutated the tool list but no notifications/tools/list_changed arrived on the open subscription stream. This is a SHOULD requirement.'\n };\n }\n return { details: { changeFrame } };\n }\n );\n\n if (!checks.some((c) => c.id === 'sep-2575-http-server-error-jsonrpc-id')) {\n checks.push({\n id: 'sep-2575-http-server-error-jsonrpc-id',\n name: 'HttpServerErrorJsonrpcId',\n description: 'All error responses carry the request JSON-RPC id',\n status: 'SUCCESS',\n timestamp,\n specReferences: SPEC_REF\n });\n }\n\n return checks;\n }\n}\n",[],[128,233,243,253],"01f4358b-258e-46b8-b428-a0aa3ef94d93","sse-polling.ts","d97d6d6e-ad13-11f1-ad25-1607ee4eb77e",24,["D",1789043618987],"/**\n * SSE Polling conformance test scenarios for MCP servers (SEP-1699)\n *\n * Tests that servers properly implement SSE polling behavior including:\n * - Sending priming events with event ID and empty data on POST SSE streams\n * - Sending retry field in priming events when configured\n * - Closing SSE stream mid-operation and resuming after client reconnects\n * - Replaying events when client reconnects with Last-Event-ID\n */\n\nimport { ClientScenario, ConformanceCheck } from '../../types.ts';\nimport { EventSourceParserStream } from 'npm:eventsource-parser@^3.0.8/stream';\nimport { Client } from 'npm:@modelcontextprotocol/sdk@^1.29.0/client/index.js';\nimport { StreamableHTTPClientTransport } from 'npm:@modelcontextprotocol/sdk@^1.29.0/client/streamableHttp.js';\n\nfunction createLoggingFetch(checks: ConformanceCheck[]) {\n return async (url: string, options: RequestInit): Promise => {\n const method = options.method || 'GET';\n let description = `Sending ${method} request`;\n if (options.body) {\n try {\n const body = JSON.parse(options.body as string);\n if (body.method) {\n description = `Sending ${method} ${body.method}`;\n }\n } catch {\n // Not JSON\n }\n }\n\n checks.push({\n id: 'outgoing-request',\n name: 'OutgoingRequest',\n description,\n status: 'INFO',\n timestamp: new Date().toISOString(),\n details: {\n method,\n url,\n headers: options.headers,\n body: options.body ? JSON.parse(options.body as string) : undefined\n }\n });\n\n const response = await fetch(url, options);\n\n const responseHeaders: Record = {};\n response.headers.forEach((value, key) => {\n responseHeaders[key] = value;\n });\n\n checks.push({\n id: 'incoming-response',\n name: 'IncomingResponse',\n description: `Received ${response.status} response for ${method}`,\n status: 'INFO',\n timestamp: new Date().toISOString(),\n details: {\n statusCode: response.status,\n headers: responseHeaders\n }\n });\n\n return response;\n };\n}\n\nexport class ServerSSEPollingScenario implements ClientScenario {\n name = 'server-sse-polling';\n readonly source = { introducedIn: '2025-11-25' } as const;\n description =\n 'Test server SSE polling via test_reconnection tool that closes stream mid-call (SEP-1699)';\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n let sessionId: string | undefined;\n let client: Client | undefined;\n let transport: StreamableHTTPClientTransport | undefined;\n\n try {\n // Step 1: Initialize session with the server\n client = new Client(\n {\n name: 'conformance-test-client',\n version: '1.0.0'\n },\n {\n capabilities: {\n sampling: {},\n elicitation: {}\n }\n }\n );\n\n transport = new StreamableHTTPClientTransport(new URL(serverUrl));\n await client.connect(transport);\n\n // Extract session ID from transport (accessing internal state)\n sessionId = (transport as unknown as { sessionId?: string }).sessionId;\n\n if (!sessionId) {\n checks.push({\n id: 'server-sse-polling-session',\n name: 'ServerSSEPollingSession',\n description: 'Server provides session ID for SSE polling tests',\n status: 'WARNING',\n timestamp: new Date().toISOString(),\n specReferences: [\n {\n id: 'SEP-1699',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1699'\n }\n ],\n details: {\n message:\n 'Server did not provide session ID - SSE polling tests may not work correctly'\n }\n });\n }\n\n // Step 2: Call test_reconnection tool via raw fetch to observe SSE behavior\n // This tool should close the stream mid-call, requiring reconnection\n const loggingFetch = createLoggingFetch(checks);\n\n const postResponse = await loggingFetch(serverUrl, {\n method: 'POST',\n headers: {\n 'Content-Type': 'application/json',\n Accept: 'text/event-stream, application/json',\n ...(sessionId && { 'mcp-session-id': sessionId }),\n 'mcp-protocol-version': '2025-03-26'\n },\n body: JSON.stringify({\n jsonrpc: '2.0',\n id: 1,\n method: 'tools/call',\n params: {\n name: 'test_reconnection',\n arguments: {}\n }\n })\n });\n\n if (!postResponse.ok) {\n // Check if tool doesn't exist (method not found or similar)\n if (postResponse.status === 400 || postResponse.status === 404) {\n checks.push({\n id: 'server-sse-test-reconnection-tool',\n name: 'ServerTestReconnectionTool',\n description:\n 'Server implements test_reconnection tool for SSE polling tests',\n status: 'WARNING',\n timestamp: new Date().toISOString(),\n errorMessage: `Server does not implement test_reconnection tool (HTTP ${postResponse.status}). This tool is recommended for testing SSE polling behavior.`,\n specReferences: [\n {\n id: 'SEP-1699',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1699'\n }\n ]\n });\n return checks;\n }\n\n checks.push({\n id: 'server-sse-post-request',\n name: 'ServerSSEPostRequest',\n description: 'Server accepts POST request with SSE stream response',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Server returned HTTP ${postResponse.status}`,\n specReferences: [\n {\n id: 'SEP-1699',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1699'\n }\n ]\n });\n return checks;\n }\n\n // Check if server returned SSE stream\n const contentType = postResponse.headers.get('content-type');\n if (!contentType?.includes('text/event-stream')) {\n checks.push({\n id: 'server-sse-content-type',\n name: 'ServerSSEContentType',\n description: 'Server returns text/event-stream for POST request',\n status: 'INFO',\n timestamp: new Date().toISOString(),\n specReferences: [\n {\n id: 'SEP-1699',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1699'\n }\n ],\n details: {\n contentType,\n message:\n 'Server returned JSON instead of SSE stream - priming event tests not applicable'\n }\n });\n return checks;\n }\n\n // Step 3: Parse SSE stream for priming event and tool response\n let hasEventId = false;\n let hasPrimingEvent = false;\n let primingEventIsFirst = false;\n let hasRetryField = false;\n let retryValue: number | undefined;\n let lastEventId: string | undefined;\n let eventCount = 0;\n let receivedToolResponse = false;\n\n if (!postResponse.body) {\n checks.push({\n id: 'server-sse-polling-stream',\n name: 'ServerSSEPollingStream',\n description: 'Server provides SSE response body',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: 'Response body is null',\n specReferences: [\n {\n id: 'SEP-1699',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1699'\n }\n ]\n });\n return checks;\n }\n\n const reader = postResponse.body\n .pipeThrough(new TextDecoderStream())\n .pipeThrough(\n new EventSourceParserStream({\n onRetry: (retryMs: number) => {\n hasRetryField = true;\n retryValue = retryMs;\n }\n })\n )\n .getReader();\n\n // Read events with timeout - expect stream to close before we get the response\n const timeout = setTimeout(() => {\n reader.cancel();\n }, 10000);\n\n try {\n while (true) {\n const { value: event, done } = await reader.read();\n\n if (done) {\n break;\n }\n\n eventCount++;\n\n // Track the last event ID for reconnection\n if (event.id) {\n hasEventId = true;\n lastEventId = event.id;\n\n // Check if this is a priming event (empty or minimal data)\n const isPriming =\n event.data === '' ||\n event.data === '{}' ||\n event.data.trim() === '';\n if (isPriming) {\n hasPrimingEvent = true;\n // Check if priming event is the first event\n if (eventCount === 1) {\n primingEventIsFirst = true;\n }\n }\n\n // Log the SSE event\n checks.push({\n id: 'incoming-sse-event',\n name: 'IncomingSseEvent',\n description: isPriming\n ? `Received SSE priming event (id: ${event.id})`\n : `Received SSE event (id: ${event.id})`,\n status: 'INFO',\n timestamp: new Date().toISOString(),\n details: {\n eventId: event.id,\n eventType: event.event || 'message',\n isPriming,\n hasRetryField,\n retryValue,\n data: event.data\n }\n });\n }\n\n // Check if this is the tool response\n if (event.data) {\n try {\n const parsed = JSON.parse(event.data);\n if (parsed.id === 1 && parsed.result) {\n receivedToolResponse = true;\n const isError = parsed.result?.isError === true;\n checks.push({\n id: 'incoming-sse-event',\n name: 'IncomingSseEvent',\n description: `Received tool response on POST stream`,\n status: isError ? 'FAILURE' : 'INFO',\n timestamp: new Date().toISOString(),\n details: {\n eventId: event.id,\n body: parsed\n },\n ...(isError && { errorMessage: `Tool call failed` })\n });\n }\n } catch {\n // Not JSON, ignore\n }\n }\n }\n } finally {\n clearTimeout(timeout);\n }\n\n // Log stream closure\n checks.push({\n id: 'stream-closed',\n name: 'StreamClosed',\n description: `POST SSE stream closed after ${eventCount} event(s)`,\n status: 'INFO',\n timestamp: new Date().toISOString(),\n details: {\n eventCount,\n lastEventId,\n receivedToolResponse\n }\n });\n\n // Check 1: Server SHOULD send priming event with ID on POST SSE stream\n let primingStatus: 'SUCCESS' | 'WARNING' = 'SUCCESS';\n let primingErrorMessage: string | undefined;\n\n if (!hasPrimingEvent) {\n primingStatus = 'WARNING';\n primingErrorMessage =\n 'Server did not send priming event with id and empty data on POST SSE stream. This is recommended for resumability.';\n } else if (!primingEventIsFirst) {\n primingStatus = 'WARNING';\n primingErrorMessage =\n 'Priming event was not sent first. It should be sent immediately when the SSE stream is established.';\n }\n\n checks.push({\n id: 'server-sse-priming-event',\n name: 'ServerSendsPrimingEvent',\n description:\n 'Server SHOULD send priming event with id and empty data on POST SSE streams',\n status: primingStatus,\n timestamp: new Date().toISOString(),\n specReferences: [\n {\n id: 'SEP-1699',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1699'\n }\n ],\n details: {\n hasPrimingEvent,\n primingEventIsFirst,\n hasEventId,\n lastEventId,\n eventCount\n },\n errorMessage: primingErrorMessage\n });\n\n // Check 2: Server SHOULD send retry field in priming event\n checks.push({\n id: 'server-sse-retry-field',\n name: 'ServerSendsRetryField',\n description:\n 'Server SHOULD send retry field to control client reconnection timing',\n status: hasRetryField ? 'SUCCESS' : 'WARNING',\n timestamp: new Date().toISOString(),\n specReferences: [\n {\n id: 'SEP-1699',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1699'\n }\n ],\n details: {\n hasRetryField,\n retryValue\n },\n errorMessage: !hasRetryField\n ? 'Server did not send retry field. This is recommended for controlling client reconnection timing.'\n : undefined\n });\n\n // Step 4: If tool response wasn't received, reconnect with Last-Event-ID\n if (!receivedToolResponse && lastEventId && sessionId) {\n // Make a GET request with Last-Event-ID to get the tool response\n const getResponse = await loggingFetch(serverUrl, {\n method: 'GET',\n headers: {\n Accept: 'text/event-stream',\n 'mcp-session-id': sessionId,\n 'mcp-protocol-version': '2025-03-26',\n 'last-event-id': lastEventId\n }\n });\n\n if (getResponse.ok && getResponse.body) {\n const reconnectReader = getResponse.body\n .pipeThrough(new TextDecoderStream())\n .pipeThrough(new EventSourceParserStream())\n .getReader();\n\n const reconnectTimeout = setTimeout(() => {\n reconnectReader.cancel();\n }, 5000);\n\n try {\n while (true) {\n const { value: event, done } = await reconnectReader.read();\n if (done) break;\n\n // Log each event received on GET stream\n checks.push({\n id: 'incoming-sse-event',\n name: 'IncomingSseEvent',\n description: `Received SSE event on GET reconnection stream (id: ${event.id || 'none'})`,\n status: 'INFO',\n timestamp: new Date().toISOString(),\n details: {\n eventId: event.id,\n eventType: event.event || 'message',\n data: event.data\n }\n });\n\n // Check if this is the tool response\n if (event.data) {\n try {\n const parsed = JSON.parse(event.data);\n if (parsed.id === 1 && parsed.result) {\n receivedToolResponse = true;\n break;\n }\n } catch {\n // Not JSON, ignore\n }\n }\n }\n } finally {\n clearTimeout(reconnectTimeout);\n }\n\n checks.push({\n id: 'server-sse-disconnect-resume',\n name: 'ServerDisconnectResume',\n description:\n 'Server closes SSE stream mid-call and resumes after client reconnects with Last-Event-ID',\n status: receivedToolResponse ? 'SUCCESS' : 'WARNING',\n timestamp: new Date().toISOString(),\n specReferences: [\n {\n id: 'SEP-1699',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1699'\n }\n ],\n details: {\n lastEventIdUsed: lastEventId,\n receivedToolResponse,\n message: receivedToolResponse\n ? 'Successfully received tool response after reconnection'\n : 'Tool response not received after reconnection'\n },\n errorMessage: !receivedToolResponse\n ? 'Server did not send tool response after client reconnected with Last-Event-ID'\n : undefined\n });\n } else {\n // Check if server doesn't support standalone GET streams\n if (getResponse.status === 405) {\n checks.push({\n id: 'server-sse-disconnect-resume',\n name: 'ServerDisconnectResume',\n description:\n 'Server supports GET reconnection with Last-Event-ID',\n status: 'INFO',\n timestamp: new Date().toISOString(),\n specReferences: [\n {\n id: 'SEP-1699',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1699'\n }\n ],\n details: {\n statusCode: getResponse.status,\n message:\n 'Server does not support standalone GET SSE endpoint (405 Method Not Allowed)'\n }\n });\n } else {\n checks.push({\n id: 'server-sse-disconnect-resume',\n name: 'ServerDisconnectResume',\n description:\n 'Server supports GET reconnection with Last-Event-ID',\n status: 'WARNING',\n timestamp: new Date().toISOString(),\n specReferences: [\n {\n id: 'SEP-1699',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1699'\n }\n ],\n details: {\n statusCode: getResponse.status,\n lastEventIdUsed: lastEventId,\n message: `Server returned ${getResponse.status} for GET request with Last-Event-ID`\n },\n errorMessage: `Server did not accept reconnection with Last-Event-ID (HTTP ${getResponse.status})`\n });\n }\n }\n } else if (receivedToolResponse) {\n // Tool response was received on the initial POST stream (server didn't disconnect)\n checks.push({\n id: 'server-sse-disconnect-resume',\n name: 'ServerDisconnectResume',\n description:\n 'Server closes SSE stream mid-call and resumes after reconnection',\n status: 'INFO',\n timestamp: new Date().toISOString(),\n specReferences: [\n {\n id: 'SEP-1699',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1699'\n }\n ],\n details: {\n receivedToolResponse: true,\n message:\n 'Tool response received on initial POST stream - server did not disconnect mid-call. The test_reconnection tool should close the stream before sending the result.'\n }\n });\n } else {\n checks.push({\n id: 'server-sse-disconnect-resume',\n name: 'ServerDisconnectResume',\n description:\n 'Server closes SSE stream mid-call and resumes after reconnection',\n status: 'INFO',\n timestamp: new Date().toISOString(),\n specReferences: [\n {\n id: 'SEP-1699',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1699'\n }\n ],\n details: {\n lastEventId,\n sessionId,\n message:\n 'Could not test disconnect/resume - no last event ID or session ID available'\n }\n });\n }\n } catch (error) {\n checks.push({\n id: 'server-sse-polling-error',\n name: 'ServerSSEPollingTest',\n description: 'Test server SSE polling behavior',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Error: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: [\n {\n id: 'SEP-1699',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1699'\n }\n ]\n });\n } finally {\n // Clean up\n if (client) {\n try {\n await client.close();\n } catch {\n // Ignore cleanup errors\n }\n }\n }\n\n return checks;\n }\n}\n",[],[128,233,243,261],"b67d5b3f-1e39-4f63-b9ec-ff84d5a84a62","sse-multiple-streams.ts","d937efaa-ad13-11f1-b329-1607ee4eb77e",23,["D",1789043618535],"/**\n * SSE Multiple Streams conformance test scenarios for MCP servers (SEP-1699)\n *\n * Tests that servers properly support multiple concurrent SSE streams:\n * - Accepting multiple POST requests that return SSE streams simultaneously\n * - Each POST request gets its own stream with unique stream ID\n *\n * Note: The standalone GET stream (without Last-Event-ID) is limited to one per session.\n * Multiple concurrent streams are achieved via POST requests, each getting their own stream.\n */\n\nimport { ClientScenario, ConformanceCheck } from '../../types.ts';\nimport { EventSourceParserStream } from 'npm:eventsource-parser@^3.0.8/stream';\nimport { Client } from 'npm:@modelcontextprotocol/sdk@^1.29.0/client/index.js';\nimport { StreamableHTTPClientTransport } from 'npm:@modelcontextprotocol/sdk@^1.29.0/client/streamableHttp.js';\n\nexport class ServerSSEMultipleStreamsScenario implements ClientScenario {\n name = 'server-sse-multiple-streams';\n readonly source = { introducedIn: '2025-11-25' } as const;\n description =\n 'Test server supports multiple concurrent POST SSE streams (SEP-1699)';\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n let sessionId: string | undefined;\n let client: Client | undefined;\n let transport: StreamableHTTPClientTransport | undefined;\n\n try {\n // Step 1: Initialize session with the server\n client = new Client(\n {\n name: 'conformance-test-client',\n version: '1.0.0'\n },\n {\n capabilities: {\n sampling: {},\n elicitation: {}\n }\n }\n );\n\n transport = new StreamableHTTPClientTransport(new URL(serverUrl));\n await client.connect(transport);\n\n // Extract session ID from transport\n sessionId = (transport as unknown as { sessionId?: string }).sessionId;\n\n if (!sessionId) {\n checks.push({\n id: 'server-sse-multiple-streams-session',\n name: 'ServerSSEMultipleStreamsSession',\n description: 'Server provides session ID for multiple streams test',\n status: 'WARNING',\n timestamp: new Date().toISOString(),\n specReferences: [\n {\n id: 'SEP-1699',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1699'\n }\n ],\n details: {\n message:\n 'Server did not provide session ID - multiple streams test may not work correctly'\n }\n });\n return checks;\n }\n\n // Step 2: Open multiple POST SSE streams concurrently\n // Each POST request gets its own stream with unique streamId\n // Spec says: \"The client MAY remain connected to multiple SSE streams simultaneously\"\n const streamResponses: Response[] = [];\n const numStreams = 3;\n\n // Launch all POST requests concurrently\n const postPromises = [];\n for (let i = 0; i < numStreams; i++) {\n const promise = fetch(serverUrl, {\n method: 'POST',\n headers: {\n 'Content-Type': 'application/json',\n Accept: 'text/event-stream, application/json',\n 'mcp-session-id': sessionId,\n 'mcp-protocol-version': '2025-03-26'\n },\n body: JSON.stringify({\n jsonrpc: '2.0',\n id: 1000 + i, // Different request IDs for each stream\n method: 'tools/list',\n params: {}\n })\n });\n postPromises.push(promise);\n }\n\n // Wait for all responses\n const responses = await Promise.all(postPromises);\n streamResponses.push(...responses);\n\n // Check that all streams were accepted (HTTP 200)\n const allAccepted = streamResponses.every((r) => r.ok);\n const statuses = streamResponses.map((r) => r.status);\n const contentTypes = streamResponses.map((r) =>\n r.headers.get('content-type')\n );\n\n // Count how many returned SSE streams vs JSON\n const sseStreams = contentTypes.filter((ct) =>\n ct?.includes('text/event-stream')\n ).length;\n\n checks.push({\n id: 'server-accepts-multiple-post-streams',\n name: 'ServerAcceptsMultiplePostStreams',\n description:\n 'Server allows multiple concurrent POST requests (each may return SSE or JSON)',\n status: allAccepted ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n specReferences: [\n {\n id: 'SEP-1699',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1699'\n }\n ],\n details: {\n numStreamsAttempted: numStreams,\n numStreamsAccepted: statuses.filter((s) => s === 200).length,\n numSseStreams: sseStreams,\n statuses,\n contentTypes\n },\n errorMessage: !allAccepted\n ? `Server rejected some requests. Statuses: ${statuses.join(', ')}`\n : undefined\n });\n\n // Step 3: Verify SSE streams are functional by reading events\n // Only test streams that returned SSE content-type\n const eventResults = await Promise.all(\n streamResponses.map(async (response, index) => {\n const contentType = response.headers.get('content-type');\n\n // Skip non-SSE responses (JSON responses are also valid)\n if (!contentType?.includes('text/event-stream')) {\n return { index, type: 'json', skipped: true };\n }\n\n if (!response.ok || !response.body) {\n return { index, type: 'sse', error: 'Stream not available' };\n }\n\n try {\n const reader = response.body\n .pipeThrough(new TextDecoderStream())\n .pipeThrough(new EventSourceParserStream())\n .getReader();\n\n // Wait for one event with timeout\n const timeoutPromise = new Promise((resolve) =>\n setTimeout(() => resolve(null), 2000)\n );\n\n const eventPromise = reader.read().then(({ value }) => value);\n\n const event = await Promise.race([eventPromise, timeoutPromise]);\n\n // Cancel reader\n await reader.cancel();\n\n return { index, type: 'sse', event };\n } catch (error) {\n return {\n index,\n type: 'sse',\n error: error instanceof Error ? error.message : String(error)\n };\n }\n })\n );\n\n // Count functional SSE streams (received event or timed out waiting - both are valid)\n const sseResults = eventResults.filter((r) => r.type === 'sse');\n const functionalSseStreams = sseResults.filter(\n (r) => !('error' in r)\n ).length;\n\n // If server returned SSE streams, they should be functional\n if (sseStreams > 0) {\n checks.push({\n id: 'server-sse-streams-functional',\n name: 'ServerSSEStreamsFunctional',\n description: 'Multiple POST SSE streams should be functional',\n status:\n functionalSseStreams === sseStreams\n ? 'SUCCESS'\n : functionalSseStreams > 0\n ? 'WARNING'\n : 'FAILURE',\n timestamp: new Date().toISOString(),\n specReferences: [\n {\n id: 'SEP-1699',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1699'\n }\n ],\n details: {\n numSseStreams: sseStreams,\n functionalSseStreams,\n results: eventResults\n },\n errorMessage:\n functionalSseStreams < sseStreams\n ? `Only ${functionalSseStreams}/${sseStreams} SSE streams were functional`\n : undefined\n });\n } else {\n // Server returned JSON for all requests - this is valid but worth noting\n checks.push({\n id: 'server-sse-streams-functional',\n name: 'ServerSSEStreamsFunctional',\n description: 'Server returned JSON responses (SSE streams optional)',\n status: 'INFO',\n timestamp: new Date().toISOString(),\n specReferences: [\n {\n id: 'SEP-1699',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1699'\n }\n ],\n details: {\n numSseStreams: 0,\n message:\n 'Server returned JSON for all requests - SSE streaming is optional',\n results: eventResults\n }\n });\n }\n } catch (error) {\n checks.push({\n id: 'server-sse-multiple-streams-error',\n name: 'ServerSSEMultipleStreamsTest',\n description: 'Test server multiple SSE streams behavior',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Error: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: [\n {\n id: 'SEP-1699',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1699'\n }\n ]\n });\n } finally {\n // Clean up\n if (client) {\n try {\n await client.close();\n } catch {\n // Ignore cleanup errors\n }\n }\n }\n\n return checks;\n }\n}\n",[],[128,233,243,269],"3502558b-aef6-4810-b042-59739371500a","resources.ts","d8f2080a-ad13-11f1-9be5-1607ee4eb77e",22,["D",1789043618084],"/**\n * Resources test scenarios for MCP servers\n */\n\nimport {\n ClientScenario,\n ConformanceCheck,\n DRAFT_PROTOCOL_VERSION\n} from '../../types.ts';\nimport { connectToServer } from './client-helper.ts';\nimport { sendStatelessRequest } from './stateless-client.ts';\nimport {\n TextResourceContents,\n BlobResourceContents\n} from 'npm:@modelcontextprotocol/sdk@^1.29.0/types.js';\n\nexport class ResourcesListScenario implements ClientScenario {\n name = 'resources-list';\n readonly source = { introducedIn: '2025-06-18' } as const;\n description = `Test listing available resources.\n\n**Server Implementation Requirements:**\n\n**Endpoint**: \\`resources/list\\`\n\n**Requirements**:\n- Return array of all available **direct resources** (not templates)\n- Each resource MUST have:\n - \\`uri\\` (string)\n - \\`name\\` (string)\n - \\`description\\` (string)\n - \\`mimeType\\` (string, optional)`;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n try {\n const connection = await connectToServer(serverUrl);\n\n const result = await connection.client.listResources();\n\n // Validate response structure\n const errors: string[] = [];\n if (!result.resources) {\n errors.push('Missing resources array');\n } else {\n if (!Array.isArray(result.resources)) {\n errors.push('resources is not an array');\n }\n\n result.resources.forEach((resource, index) => {\n if (!resource.uri) errors.push(`Resource ${index}: missing uri`);\n if (!resource.name) errors.push(`Resource ${index}: missing name`);\n });\n }\n\n checks.push({\n id: 'resources-list',\n name: 'ResourcesList',\n description: 'Server lists available resources with valid structure',\n status: errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: errors.length > 0 ? errors.join('; ') : undefined,\n specReferences: [\n {\n id: 'MCP-Resources-List',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/resources#listing-resources'\n }\n ],\n details: {\n resourceCount: result.resources?.length || 0,\n resources: result.resources?.map((r) => r.uri)\n }\n });\n\n await connection.close();\n } catch (error) {\n checks.push({\n id: 'resources-list',\n name: 'ResourcesList',\n description: 'Server lists available resources with valid structure',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: [\n {\n id: 'MCP-Resources-List',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/resources#listing-resources'\n }\n ]\n });\n }\n\n return checks;\n }\n}\n\nexport class ResourcesReadTextScenario implements ClientScenario {\n name = 'resources-read-text';\n readonly source = { introducedIn: '2025-06-18' } as const;\n description = `Test reading text resource.\n\n**Server Implementation Requirements:**\n\nImplement resource \\`test://static-text\\` that returns:\n\n\\`\\`\\`json\n{\n \"contents\": [\n {\n \"uri\": \"test://static-text\",\n \"mimeType\": \"text/plain\",\n \"text\": \"This is the content of the static text resource.\"\n }\n ]\n}\n\\`\\`\\``;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n try {\n const connection = await connectToServer(serverUrl);\n\n const result = await connection.client.readResource({\n uri: 'test://static-text'\n });\n\n // Validate response\n const errors: string[] = [];\n if (!result.contents) errors.push('Missing contents array');\n if (!Array.isArray(result.contents))\n errors.push('contents is not an array');\n if (result.contents.length === 0) errors.push('contents array is empty');\n\n const content = result.contents[0] as TextResourceContents | undefined;\n if (content) {\n if (!content.uri) errors.push('Content missing uri');\n if (!content.mimeType) errors.push('Content missing mimeType');\n if (!content.text) errors.push('Content missing text field');\n }\n\n checks.push({\n id: 'resources-read-text',\n name: 'ResourcesReadText',\n description: 'Read text resource successfully',\n status: errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: errors.length > 0 ? errors.join('; ') : undefined,\n specReferences: [\n {\n id: 'MCP-Resources-Read',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/resources#reading-resources'\n }\n ],\n details: {\n uri: content?.uri,\n mimeType: content?.mimeType,\n hasText: !!content?.text\n }\n });\n\n await connection.close();\n } catch (error) {\n checks.push({\n id: 'resources-read-text',\n name: 'ResourcesReadText',\n description: 'Read text resource successfully',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: [\n {\n id: 'MCP-Resources-Read',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/resources#reading-resources'\n }\n ]\n });\n }\n\n return checks;\n }\n}\n\nexport class ResourcesReadBinaryScenario implements ClientScenario {\n name = 'resources-read-binary';\n readonly source = { introducedIn: '2025-06-18' } as const;\n description = `Test reading binary resource.\n\n**Server Implementation Requirements:**\n\nImplement resource \\`test://static-binary\\` that returns:\n\n\\`\\`\\`json\n{\n \"contents\": [\n {\n \"uri\": \"test://static-binary\",\n \"mimeType\": \"image/png\",\n \"blob\": \"\"\n }\n ]\n}\n\\`\\`\\``;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n try {\n const connection = await connectToServer(serverUrl);\n\n const result = await connection.client.readResource({\n uri: 'test://static-binary'\n });\n\n // Validate response\n const errors: string[] = [];\n if (!result.contents) errors.push('Missing contents array');\n if (result.contents.length === 0) errors.push('contents array is empty');\n\n const content = result.contents[0] as BlobResourceContents | undefined;\n if (content) {\n if (!content.uri) errors.push('Content missing uri');\n if (!content.mimeType) errors.push('Content missing mimeType');\n if (!content.blob) errors.push('Content missing blob field');\n }\n\n checks.push({\n id: 'resources-read-binary',\n name: 'ResourcesReadBinary',\n description: 'Read binary resource successfully',\n status: errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: errors.length > 0 ? errors.join('; ') : undefined,\n specReferences: [\n {\n id: 'MCP-Resources-Read',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/resources#reading-resources'\n }\n ],\n details: {\n uri: content?.uri,\n mimeType: content?.mimeType,\n hasBlob: !!content?.blob\n }\n });\n\n await connection.close();\n } catch (error) {\n checks.push({\n id: 'resources-read-binary',\n name: 'ResourcesReadBinary',\n description: 'Read binary resource successfully',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: [\n {\n id: 'MCP-Resources-Read',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/resources#reading-resources'\n }\n ]\n });\n }\n\n return checks;\n }\n}\n\nexport class ResourcesTemplateReadScenario implements ClientScenario {\n name = 'resources-templates-read';\n readonly source = { introducedIn: '2025-06-18' } as const;\n description = `Test reading resource from template.\n\n**Server Implementation Requirements:**\n\nImplement resource template \\`test://template/{id}/data\\` that substitutes parameters.\n\n**Behavior**: When client requests \\`test://template/123/data\\`, substitute \\`{id}\\` with \\`123\\`\n\nReturns (for \\`uri: \"test://template/123/data\"\\`):\n\n\\`\\`\\`json\n{\n \"contents\": [\n {\n \"uri\": \"test://template/123/data\",\n \"mimeType\": \"application/json\",\n \"text\": \"{\"id\":\"123\",\"templateTest\":true,\"data\":\"Data for ID: 123\"}\"\n }\n ]\n}\n\\`\\`\\``;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n try {\n const connection = await connectToServer(serverUrl);\n\n const result = await connection.client.readResource({\n uri: 'test://template/123/data'\n });\n\n // Validate response\n const errors: string[] = [];\n if (!result.contents) errors.push('Missing contents array');\n if (result.contents.length === 0) errors.push('contents array is empty');\n\n const content = result.contents[0];\n if (content) {\n if (!content.uri) errors.push('Content missing uri');\n const hasText = 'text' in content;\n const hasBlob = 'blob' in content;\n if (!hasText && !hasBlob) errors.push('Content missing text or blob');\n\n const text = hasText\n ? (content as TextResourceContents).text\n : hasBlob\n ? '[binary]'\n : '';\n if (typeof text === 'string' && !text.includes('123')) {\n errors.push('Parameter substitution not reflected in content');\n }\n }\n\n checks.push({\n id: 'resources-templates-read',\n name: 'ResourcesTemplateRead',\n description: 'Read resource from template with parameter substitution',\n status: errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: errors.length > 0 ? errors.join('; ') : undefined,\n specReferences: [\n {\n id: 'MCP-Resources-Templates',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/resources#resource-templates'\n }\n ],\n details: {\n uri: content?.uri,\n content: content\n ? 'text' in content\n ? (content as TextResourceContents).text\n : (content as BlobResourceContents).blob\n : undefined\n }\n });\n\n await connection.close();\n } catch (error) {\n checks.push({\n id: 'resources-templates-read',\n name: 'ResourcesTemplateRead',\n description: 'Read resource from template with parameter substitution',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: [\n {\n id: 'MCP-Resources-Templates',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/resources#resource-templates'\n }\n ]\n });\n }\n\n return checks;\n }\n}\n\nexport class ResourcesSubscribeScenario implements ClientScenario {\n name = 'resources-subscribe';\n readonly source = { introducedIn: '2025-06-18' } as const;\n description = `Test subscribing to resource updates.\n\n**Server Implementation Requirements:**\n\n**Endpoint**: \\`resources/subscribe\\`\n\n**Requirements**:\n- Accept subscription request with URI\n- Track subscribed URIs\n- Return empty object \\`{}\\`\n\nExample request:\n\n\\`\\`\\`json\n{\n \"method\": \"resources/subscribe\",\n \"params\": {\n \"uri\": \"test://watched-resource\"\n }\n}\n\\`\\`\\``;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n try {\n const connection = await connectToServer(serverUrl);\n\n await connection.client.subscribeResource({\n uri: 'test://watched-resource'\n });\n\n checks.push({\n id: 'resources-subscribe',\n name: 'ResourcesSubscribe',\n description: 'Subscribe to resource successfully',\n status: 'SUCCESS',\n timestamp: new Date().toISOString(),\n specReferences: [\n {\n id: 'MCP-Resources-Subscribe',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/resources#resource-subscriptions'\n }\n ]\n });\n\n await connection.close();\n } catch (error) {\n checks.push({\n id: 'resources-subscribe',\n name: 'ResourcesSubscribe',\n description: 'Subscribe to resource successfully',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: [\n {\n id: 'MCP-Resources-Subscribe',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/resources#resource-subscriptions'\n }\n ]\n });\n }\n\n return checks;\n }\n}\n\nexport class ResourcesNotFoundErrorScenario implements ClientScenario {\n name = 'sep-2164-resource-not-found';\n readonly source = { introducedIn: DRAFT_PROTOCOL_VERSION } as const;\n description = `Test error handling for non-existent resources (SEP-2164).\n\n**Server Implementation Requirements:**\n\n**Endpoint**: \\`resources/read\\`\n\nWhen a client requests a URI that does not correspond to any resource, the server:\n\n- **MUST NOT** return a result with an empty \\`contents\\` array\n- **SHOULD** return a JSON-RPC error with code \\`-32602\\` (Invalid Params)\n- **SHOULD** include the requested \\`uri\\` in the error \\`data\\` field\n\nExample error response:\n\n\\`\\`\\`json\n{\n \"jsonrpc\": \"2.0\",\n \"id\": 2,\n \"error\": {\n \"code\": -32602,\n \"message\": \"Resource not found\",\n \"data\": {\n \"uri\": \"test://nonexistent-resource-for-conformance-testing\"\n }\n }\n}\n\\`\\`\\`\n\nThis scenario does not require the server to register any specific resource — it tests behavior when reading a URI the server does not recognize.`;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n const nonexistentUri =\n 'test://nonexistent-resource-for-conformance-testing';\n const specReferences = [\n {\n id: 'SEP-2164',\n url: 'https://modelcontextprotocol.io/specification/draft/server/resources#error-handling'\n }\n ];\n\n // SEP-2164 is a draft-spec requirement, so the request is sent statelessly\n // with the draft protocol version and the cross-cutting _meta/headers.\n let response;\n try {\n response = await sendStatelessRequest(serverUrl, 'resources/read', {\n uri: nonexistentUri\n });\n } catch (error) {\n checks.push({\n id: 'sep-2164-error-code',\n name: 'ResourcesNotFoundErrorCode',\n description:\n 'Server returns -32602 (Invalid Params) for non-existent resource',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `resources/read request failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences\n });\n return checks;\n }\n\n const result = response.body?.result as\n | { contents?: unknown[] }\n | undefined;\n const rpcError = response.body?.error;\n\n // Check 1: MUST NOT return an empty contents array\n const returnedEmptyContents =\n result !== undefined && (result.contents?.length ?? 0) === 0;\n checks.push({\n id: 'sep-2164-no-empty-contents',\n name: 'ResourcesNotFoundNoEmptyContents',\n description:\n 'Server does not return an empty contents array for a non-existent resource',\n status: returnedEmptyContents ? 'FAILURE' : 'SUCCESS',\n timestamp: new Date().toISOString(),\n errorMessage: returnedEmptyContents\n ? 'Server returned a result with an empty contents array. Servers MUST NOT return an empty contents array for non-existent resources.'\n : undefined,\n specReferences,\n details: {\n requestedUri: nonexistentUri,\n receivedResult: result !== undefined,\n contentsLength: result?.contents?.length\n }\n });\n\n // Check 2: SHOULD return JSON-RPC error with code -32602\n const errorCode = rpcError?.code;\n let errorCodeMessage: string | undefined;\n if (result !== undefined) {\n errorCodeMessage = `Server returned a result instead of an error (contents length: ${result.contents?.length ?? 'undefined'}). Servers SHOULD return a JSON-RPC error for non-existent resources.`;\n } else if (!rpcError) {\n errorCodeMessage = `Expected a JSON-RPC error, got HTTP ${response.status} with no JSON-RPC error in the body.`;\n } else if (errorCode !== -32602) {\n errorCodeMessage =\n `Expected error code -32602 (Invalid Params), got ${errorCode}. ` +\n (errorCode === -32002\n ? 'Code -32002 was used in earlier spec versions but SEP-2164 standardizes on -32602.'\n : '');\n }\n\n checks.push({\n id: 'sep-2164-error-code',\n name: 'ResourcesNotFoundErrorCode',\n description:\n 'Server returns -32602 (Invalid Params) for non-existent resource (SHOULD)',\n status: errorCodeMessage === undefined ? 'SUCCESS' : 'WARNING',\n timestamp: new Date().toISOString(),\n errorMessage: errorCodeMessage,\n specReferences,\n details: {\n requestedUri: nonexistentUri,\n receivedErrorCode: errorCode,\n receivedResult: result !== undefined\n }\n });\n\n // Check 3: SHOULD include uri in error data field\n const errorData = rpcError?.data as { uri?: string } | undefined;\n const dataUriMatches = errorData?.uri === nonexistentUri;\n\n checks.push({\n id: 'sep-2164-data-uri',\n name: 'ResourcesNotFoundDataUri',\n description:\n 'Server includes the requested URI in the error data field (SHOULD)',\n status: rpcError ? (dataUriMatches ? 'SUCCESS' : 'WARNING') : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: rpcError\n ? dataUriMatches\n ? undefined\n : `Error data.uri is ${JSON.stringify(errorData?.uri)}, expected \"${nonexistentUri}\". This is a SHOULD requirement.`\n : 'No JSON-RPC error received; cannot evaluate data field.',\n specReferences,\n details: {\n requestedUri: nonexistentUri,\n receivedDataUri: errorData?.uri\n }\n });\n\n return checks;\n }\n}\n\nexport class ResourcesUnsubscribeScenario implements ClientScenario {\n name = 'resources-unsubscribe';\n readonly source = { introducedIn: '2025-06-18' } as const;\n description = `Test unsubscribing from resource.\n\n**Server Implementation Requirements:**\n\n**Endpoint**: \\`resources/unsubscribe\\`\n\n**Requirements**:\n- Accept unsubscribe request with URI\n- Remove URI from subscriptions\n- Stop sending update notifications for that URI\n- Return empty object \\`{}\\``;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n try {\n const connection = await connectToServer(serverUrl);\n\n // First subscribe\n await connection.client.subscribeResource({\n uri: 'test://watched-resource'\n });\n\n // Then unsubscribe\n await connection.client.unsubscribeResource({\n uri: 'test://watched-resource'\n });\n\n checks.push({\n id: 'resources-unsubscribe',\n name: 'ResourcesUnsubscribe',\n description: 'Unsubscribe from resource successfully',\n status: 'SUCCESS',\n timestamp: new Date().toISOString(),\n specReferences: [\n {\n id: 'MCP-Resources-Subscribe',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/schema#unsubscriberequest'\n }\n ]\n });\n\n await connection.close();\n } catch (error) {\n checks.push({\n id: 'resources-unsubscribe',\n name: 'ResourcesUnsubscribe',\n description: 'Unsubscribe from resource successfully',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: [\n {\n id: 'MCP-Resources-Subscribe',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/resources#resource-subscriptions'\n }\n ]\n });\n }\n\n return checks;\n }\n}\n",[],[128,233,243,277],"ce64f063-235a-4a37-9bf7-26df862dbb93","prompts.ts","d8a2b69c-ad13-11f1-b329-1607ee4eb77e",21,["D",1789043617537],"/**\n * Prompts test scenarios for MCP servers\n */\n\nimport { ClientScenario, ConformanceCheck } from '../../types.ts';\nimport { connectToServer } from './client-helper.ts';\n\nexport class PromptsListScenario implements ClientScenario {\n name = 'prompts-list';\n readonly source = { introducedIn: '2025-06-18' } as const;\n description = `Test listing available prompts.\n\n**Server Implementation Requirements:**\n\n**Endpoint**: \\`prompts/list\\`\n\n**Requirements**:\n- Return array of all available prompts\n- Each prompt MUST have:\n - \\`name\\` (string)\n - \\`description\\` (string)\n - \\`arguments\\` (array, optional) - list of required arguments`;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n try {\n const connection = await connectToServer(serverUrl);\n\n const result = await connection.client.listPrompts();\n\n // Validate response structure\n const errors: string[] = [];\n if (!result.prompts) {\n errors.push('Missing prompts array');\n } else {\n if (!Array.isArray(result.prompts)) {\n errors.push('prompts is not an array');\n }\n\n result.prompts.forEach((prompt, index) => {\n if (!prompt.name) errors.push(`Prompt ${index}: missing name`);\n if (!prompt.description)\n errors.push(`Prompt ${index}: missing description`);\n });\n }\n\n checks.push({\n id: 'prompts-list',\n name: 'PromptsList',\n description: 'Server lists available prompts with valid structure',\n status: errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: errors.length > 0 ? errors.join('; ') : undefined,\n specReferences: [\n {\n id: 'MCP-Prompts-List',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/prompts#listing-prompts'\n }\n ],\n details: {\n promptCount: result.prompts?.length || 0,\n prompts: result.prompts?.map((p) => p.name)\n }\n });\n\n await connection.close();\n } catch (error) {\n checks.push({\n id: 'prompts-list',\n name: 'PromptsList',\n description: 'Server lists available prompts with valid structure',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: [\n {\n id: 'MCP-Prompts-List',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/prompts#listing-prompts'\n }\n ]\n });\n }\n\n return checks;\n }\n}\n\nexport class PromptsGetSimpleScenario implements ClientScenario {\n name = 'prompts-get-simple';\n readonly source = { introducedIn: '2025-06-18' } as const;\n description = `Test getting a simple prompt without arguments.\n\n**Server Implementation Requirements:**\n\nImplement a prompt named \\`test_simple_prompt\\` with no arguments that returns:\n\n\\`\\`\\`json\n{\n \"messages\": [\n {\n \"role\": \"user\",\n \"content\": {\n \"type\": \"text\",\n \"text\": \"This is a simple prompt for testing.\"\n }\n }\n ]\n}\n\\`\\`\\``;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n try {\n const connection = await connectToServer(serverUrl);\n\n const result = await connection.client.getPrompt({\n name: 'test_simple_prompt'\n });\n\n // Validate response\n const errors: string[] = [];\n if (!result.messages) errors.push('Missing messages array');\n if (!Array.isArray(result.messages))\n errors.push('messages is not an array');\n if (result.messages.length === 0) errors.push('messages array is empty');\n\n result.messages.forEach((message: any, index: number) => {\n if (!message.role) errors.push(`Message ${index}: missing role`);\n if (!message.content) errors.push(`Message ${index}: missing content`);\n });\n\n checks.push({\n id: 'prompts-get-simple',\n name: 'PromptsGetSimple',\n description: 'Get simple prompt successfully',\n status: errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: errors.length > 0 ? errors.join('; ') : undefined,\n specReferences: [\n {\n id: 'MCP-Prompts-Get',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/prompts#getting-prompts'\n }\n ],\n details: {\n messageCount: result.messages?.length || 0\n }\n });\n\n await connection.close();\n } catch (error) {\n checks.push({\n id: 'prompts-get-simple',\n name: 'PromptsGetSimple',\n description: 'Get simple prompt successfully',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: [\n {\n id: 'MCP-Prompts-Get',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/prompts#getting-prompts'\n }\n ]\n });\n }\n\n return checks;\n }\n}\n\nexport class PromptsGetWithArgsScenario implements ClientScenario {\n name = 'prompts-get-with-args';\n readonly source = { introducedIn: '2025-06-18' } as const;\n description = `Test parameterized prompt.\n\n**Server Implementation Requirements:**\n\nImplement a prompt named \\`test_prompt_with_arguments\\` with arguments:\n- \\`arg1\\` (string, required) - First test argument\n- \\`arg2\\` (string, required) - Second test argument\n\nReturns (with args \\`{arg1: \"hello\", arg2: \"world\"}\\`):\n\n\\`\\`\\`json\n{\n \"messages\": [\n {\n \"role\": \"user\",\n \"content\": {\n \"type\": \"text\",\n \"text\": \"Prompt with arguments: arg1='hello', arg2='world'\"\n }\n }\n ]\n}\n\\`\\`\\``;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n try {\n const connection = await connectToServer(serverUrl);\n\n const result = await connection.client.getPrompt({\n name: 'test_prompt_with_arguments',\n arguments: {\n arg1: 'testValue1',\n arg2: 'testValue2'\n }\n });\n\n // Validate response\n const errors: string[] = [];\n if (!result.messages) errors.push('Missing messages array');\n if (result.messages.length === 0) errors.push('messages array is empty');\n\n // Check if arguments were substituted\n const messageText = JSON.stringify(result.messages);\n if (!messageText.includes('testValue1')) {\n errors.push('arg1 not substituted in prompt');\n }\n if (!messageText.includes('testValue2')) {\n errors.push('arg2 not substituted in prompt');\n }\n\n checks.push({\n id: 'prompts-get-with-args',\n name: 'PromptsGetWithArgs',\n description: 'Get parameterized prompt with argument substitution',\n status: errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: errors.length > 0 ? errors.join('; ') : undefined,\n specReferences: [\n {\n id: 'MCP-Prompts-Get',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/prompts#getting-prompts'\n }\n ],\n details: {\n messageCount: result.messages?.length || 0,\n messages: result.messages\n }\n });\n\n await connection.close();\n } catch (error) {\n checks.push({\n id: 'prompts-get-with-args',\n name: 'PromptsGetWithArgs',\n description: 'Get parameterized prompt with argument substitution',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: [\n {\n id: 'MCP-Prompts-Get',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/prompts#getting-prompts'\n }\n ]\n });\n }\n\n return checks;\n }\n}\n\nexport class PromptsGetEmbeddedResourceScenario implements ClientScenario {\n name = 'prompts-get-embedded-resource';\n readonly source = { introducedIn: '2025-06-18' } as const;\n description = `Test prompt with embedded resource content.\n\n**Server Implementation Requirements:**\n\nImplement a prompt named \\`test_prompt_with_embedded_resource\\` with argument:\n- \\`resourceUri\\` (string, required) - URI of the resource to embed\n\nReturns:\n\n\\`\\`\\`json\n{\n \"messages\": [\n {\n \"role\": \"user\",\n \"content\": {\n \"type\": \"resource\",\n \"resource\": {\n \"uri\": \"\",\n \"mimeType\": \"text/plain\",\n \"text\": \"Embedded resource content for testing.\"\n }\n }\n },\n {\n \"role\": \"user\",\n \"content\": {\n \"type\": \"text\",\n \"text\": \"Please process the embedded resource above.\"\n }\n }\n ]\n}\n\\`\\`\\``;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n try {\n const connection = await connectToServer(serverUrl);\n\n const result = await connection.client.getPrompt({\n name: 'test_prompt_with_embedded_resource',\n arguments: {\n resourceUri: 'test://example-resource'\n }\n });\n\n // Validate response\n const errors: string[] = [];\n if (!result.messages) errors.push('Missing messages array');\n\n // Look for resource content\n const hasResourceContent = result.messages.some(\n (msg: any) =>\n msg.content?.type === 'resource' ||\n msg.content?.resource !== undefined\n );\n\n if (!hasResourceContent) {\n errors.push('No embedded resource found in prompt');\n }\n\n checks.push({\n id: 'prompts-get-embedded-resource',\n name: 'PromptsGetEmbeddedResource',\n description: 'Get prompt with embedded resource',\n status: errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: errors.length > 0 ? errors.join('; ') : undefined,\n specReferences: [\n {\n id: 'MCP-Prompts-Embedded-Resources',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/prompts#embedded-resources'\n }\n ],\n details: {\n messageCount: result.messages?.length || 0,\n messages: result.messages\n }\n });\n\n await connection.close();\n } catch (error) {\n checks.push({\n id: 'prompts-get-embedded-resource',\n name: 'PromptsGetEmbeddedResource',\n description: 'Get prompt with embedded resource',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: [\n {\n id: 'MCP-Prompts-Embedded-Resources',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/prompts#embedded-resources'\n }\n ]\n });\n }\n\n return checks;\n }\n}\n\nexport class PromptsGetWithImageScenario implements ClientScenario {\n name = 'prompts-get-with-image';\n readonly source = { introducedIn: '2025-06-18' } as const;\n description = `Test prompt with image content.\n\n**Server Implementation Requirements:**\n\nImplement a prompt named \\`test_prompt_with_image\\` with no arguments that returns:\n\n\\`\\`\\`json\n{\n \"messages\": [\n {\n \"role\": \"user\",\n \"content\": {\n \"type\": \"image\",\n \"data\": \"\",\n \"mimeType\": \"image/png\"\n }\n },\n {\n \"role\": \"user\",\n \"content\": {\n \"type\": \"text\",\n \"text\": \"Please analyze the image above.\"\n }\n }\n ]\n}\n\\`\\`\\``;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n try {\n const connection = await connectToServer(serverUrl);\n\n const result = await connection.client.getPrompt({\n name: 'test_prompt_with_image'\n });\n\n // Validate response\n const errors: string[] = [];\n if (!result.messages) errors.push('Missing messages array');\n\n // Look for image content\n const hasImageContent = result.messages.some(\n (msg: any) =>\n msg.content?.type === 'image' &&\n msg.content?.data &&\n msg.content?.mimeType\n );\n\n if (!hasImageContent) {\n errors.push('No image content found in prompt');\n }\n\n checks.push({\n id: 'prompts-get-with-image',\n name: 'PromptsGetWithImage',\n description: 'Get prompt with image content',\n status: errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: errors.length > 0 ? errors.join('; ') : undefined,\n specReferences: [\n {\n id: 'MCP-Prompts-Image',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/prompts#image-content'\n }\n ],\n details: {\n messageCount: result.messages?.length || 0\n }\n });\n\n await connection.close();\n } catch (error) {\n checks.push({\n id: 'prompts-get-with-image',\n name: 'PromptsGetWithImage',\n description: 'Get prompt with image content',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: [\n {\n id: 'MCP-Prompts-Image',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/prompts#image-content'\n }\n ]\n });\n }\n\n return checks;\n }\n}\n",[],[128,233,243,285],"4125b7b3-14f3-4b1c-b1e3-4fa964e75e05","lifecycle.ts","dc5479ba-ad13-11f1-8f33-1607ee4eb77e",31,["D",1789043623746],"/**\n * Lifecycle test scenarios for MCP servers\n */\n\nimport { ClientScenario, ConformanceCheck } from '../../types.ts';\nimport { connectToServer } from './client-helper.ts';\n\nconst VISIBLE_ASCII_REGEX = /^[\\x21-\\x7E]+$/;\n\nconst SESSION_SPEC_REFERENCES = [\n {\n id: 'MCP-Session-Management',\n url: 'https://modelcontextprotocol.io/specification/2025-11-25/basic/transports#session-management'\n }\n];\n\nexport class ServerInitializeScenario implements ClientScenario {\n name = 'server-initialize';\n readonly source = { introducedIn: '2025-06-18' } as const;\n description = `Test basic server initialization handshake.\n\n**Server Implementation Requirements:**\n\n**Endpoint**: \\`initialize\\`\n\n**Requirements**:\n- Accept \\`initialize\\` request with client info and capabilities\n- Return valid initialize response with server info, protocol version, and capabilities\n- Accept \\`initialized\\` notification from client after handshake\n- If a session ID is assigned, it MUST only contain visible ASCII characters (0x21 to 0x7E)\n\nThis test verifies the server can complete the two-phase initialization handshake successfully,\nand validates session ID format if one is assigned.`;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n try {\n const connection = await connectToServer(serverUrl);\n\n // The connection process already does initialization\n // Check that we have a connected client\n checks.push({\n id: 'server-initialize',\n name: 'ServerInitialize',\n description:\n 'Server responds to initialize request with valid structure',\n status: 'SUCCESS',\n timestamp: new Date().toISOString(),\n specReferences: [\n {\n id: 'MCP-Initialize',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/basic/lifecycle#initialization'\n }\n ],\n details: {\n serverUrl,\n connected: true\n }\n });\n\n await connection.close();\n } catch (error) {\n checks.push({\n id: 'server-initialize',\n name: 'ServerInitialize',\n description:\n 'Server responds to initialize request with valid structure',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed to initialize: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: [\n {\n id: 'MCP-Initialize',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/basic/lifecycle#initialization'\n }\n ]\n });\n return checks;\n }\n\n // Check: Session ID visible ASCII validation\n // Use a raw fetch to inspect the MCP-Session-Id response header,\n // since the SDK client transport does not expose it.\n try {\n const response = await fetch(serverUrl, {\n method: 'POST',\n headers: {\n 'Content-Type': 'application/json',\n Accept: 'application/json, text/event-stream',\n 'mcp-protocol-version': '2025-11-25'\n },\n body: JSON.stringify({\n jsonrpc: '2.0',\n id: 1,\n method: 'initialize',\n params: {\n protocolVersion: '2025-11-25',\n capabilities: {},\n clientInfo: {\n name: 'conformance-session-id-test',\n version: '1.0.0'\n }\n }\n })\n });\n\n const sessionId = response.headers.get('mcp-session-id');\n\n if (!sessionId) {\n checks.push({\n id: 'server-session-id-visible-ascii',\n name: 'ServerSessionIdVisibleAscii',\n description:\n 'Server-provided session ID uses only visible ASCII characters',\n status: 'INFO',\n timestamp: new Date().toISOString(),\n specReferences: SESSION_SPEC_REFERENCES,\n details: {\n message:\n 'Server did not provide an MCP-Session-Id header (session ID is optional)'\n }\n });\n } else if (VISIBLE_ASCII_REGEX.test(sessionId)) {\n checks.push({\n id: 'server-session-id-visible-ascii',\n name: 'ServerSessionIdVisibleAscii',\n description:\n 'Server-provided session ID uses only visible ASCII characters',\n status: 'SUCCESS',\n timestamp: new Date().toISOString(),\n specReferences: SESSION_SPEC_REFERENCES,\n details: {\n sessionId\n }\n });\n } else {\n checks.push({\n id: 'server-session-id-visible-ascii',\n name: 'ServerSessionIdVisibleAscii',\n description:\n 'Server-provided session ID uses only visible ASCII characters',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage:\n 'Session ID contains characters outside visible ASCII range (0x21-0x7E)',\n specReferences: SESSION_SPEC_REFERENCES,\n details: {\n sessionId\n }\n });\n }\n } catch (error) {\n checks.push({\n id: 'server-session-id-visible-ascii',\n name: 'ServerSessionIdVisibleAscii',\n description:\n 'Server-provided session ID uses only visible ASCII characters',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed to send initialize request for session ID check: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: SESSION_SPEC_REFERENCES\n });\n }\n\n return checks;\n }\n}\n",[],[128,233,243,293],"4e9b9134-5964-4895-a1f2-35bdc3180c0f","json-schema-2020-12.ts","dacdc330-ad13-11f1-9be5-1607ee4eb77e",27,["D",1789043621196],"/**\n * JSON Schema 2020-12 conformance test scenario (SEP-1613, SEP-2106)\n *\n * Validates that MCP servers correctly preserve JSON Schema 2020-12 keywords\n * in tool definitions, ensuring implementations don't strip $schema, $defs,\n * or additionalProperties fields (SEP-1613).\n *\n * SEP-2106 broadened inputSchema to permit the full JSON Schema 2020-12\n * vocabulary alongside the required root `type: \"object\"`. This scenario also\n * verifies that composition (allOf/anyOf), conditional (if/then/else), and\n * reference ($anchor) keywords survive tools/list rather than being stripped.\n */\n\nimport {\n CheckStatus,\n ClientScenario,\n ConformanceCheck,\n DRAFT_PROTOCOL_VERSION\n} from '../../types.ts';\nimport { connectToServer } from './client-helper.ts';\n\nconst EXPECTED_TOOL_NAME = 'json_schema_2020_12_tool';\nconst EXPECTED_SCHEMA_DIALECT = 'https://json-schema.org/draft/2020-12/schema';\n\n/**\n * Soft version gate for the SEP-2106 keyword-preservation checks.\n *\n * Preserving the broader JSON Schema 2020-12 vocabulary is good behavior at\n * any protocol version, so a server that preserves the keywords gets SUCCESS\n * regardless of what it negotiated. Stripping them is only a conformance\n * FAILURE once the server claims a protocol version that includes SEP-2106\n * (the draft); a server that only negotiated an earlier dated version is not\n * yet subject to the requirement, so the check is SKIPPED rather than failed.\n */\nexport function sep2106KeywordCheckStatus(\n preserved: boolean,\n negotiatedProtocolVersion: string | undefined\n): CheckStatus {\n if (preserved) {\n return 'SUCCESS';\n }\n return negotiatedProtocolVersion === DRAFT_PROTOCOL_VERSION\n ? 'FAILURE'\n : 'SKIPPED';\n}\n\nexport class JsonSchema2020_12Scenario implements ClientScenario {\n name = 'json-schema-2020-12';\n readonly source = { introducedIn: '2025-11-25' } as const;\n description = `Validates JSON Schema 2020-12 keyword preservation (SEP-1613, SEP-2106).\n\n**Server Implementation Requirements:**\n\nImplement tool \\`${EXPECTED_TOOL_NAME}\\` with inputSchema containing JSON Schema 2020-12 features, including the broader vocabulary permitted by SEP-2106 (an \\`$anchor\\` inside \\`$defs\\`, composition keywords \\`allOf\\`/\\`anyOf\\`, and conditional keywords \\`if\\`/\\`then\\`/\\`else\\`):\n\n\\`\\`\\`json\n{\n \"name\": \"${EXPECTED_TOOL_NAME}\",\n \"description\": \"Tool with JSON Schema 2020-12 features\",\n \"inputSchema\": {\n \"$schema\": \"${EXPECTED_SCHEMA_DIALECT}\",\n \"type\": \"object\",\n \"$defs\": {\n \"address\": {\n \"$anchor\": \"addressDef\",\n \"type\": \"object\",\n \"properties\": {\n \"street\": { \"type\": \"string\" },\n \"city\": { \"type\": \"string\" }\n }\n }\n },\n \"properties\": {\n \"name\": { \"type\": \"string\" },\n \"address\": { \"$ref\": \"#/$defs/address\" },\n \"contactMethod\": { \"type\": \"string\", \"enum\": [\"phone\", \"email\"] },\n \"phone\": { \"type\": \"string\" },\n \"email\": { \"type\": \"string\" }\n },\n \"allOf\": [\n { \"anyOf\": [{ \"required\": [\"phone\"] }, { \"required\": [\"email\"] }] }\n ],\n \"if\": {\n \"properties\": { \"contactMethod\": { \"const\": \"phone\" } },\n \"required\": [\"contactMethod\"]\n },\n \"then\": { \"required\": [\"phone\"] },\n \"else\": { \"required\": [\"email\"] },\n \"additionalProperties\": false\n }\n}\n\\`\\`\\`\n\n**Verification**: The test verifies that \\`$schema\\`, \\`$defs\\`, and \\`additionalProperties\\` are preserved (SEP-1613), and that the composition (\\`allOf\\`/\\`anyOf\\`), conditional (\\`if\\`/\\`then\\`/\\`else\\`), and \\`$anchor\\` keywords are preserved (SEP-2106), in the tool listing response.`;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n const specReferences = [\n {\n id: 'SEP-1613',\n url: 'https://github.com/modelcontextprotocol/specification/pull/655'\n }\n ];\n const sep2106References = [\n {\n id: 'SEP-2106',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2106'\n }\n ];\n\n try {\n const connection = await connectToServer(serverUrl);\n // Negotiated wire protocolVersion from the initialize handshake; used to\n // soft-gate the SEP-2106 checks below.\n const negotiatedVersion = (\n connection.client.transport as { protocolVersion?: string } | undefined\n )?.protocolVersion;\n const result = await connection.client.listTools();\n\n // Find the test tool\n const tool = result.tools?.find((t) => t.name === EXPECTED_TOOL_NAME);\n\n // Check 1: Tool exists\n checks.push({\n id: 'json-schema-2020-12-tool-found',\n name: 'JsonSchema2020_12ToolFound',\n description: `Server advertises tool '${EXPECTED_TOOL_NAME}'`,\n status: tool ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: tool\n ? undefined\n : `Tool '${EXPECTED_TOOL_NAME}' not found. Available tools: ${result.tools?.map((t) => t.name).join(', ') || 'none'}`,\n specReferences,\n details: {\n toolFound: !!tool,\n availableTools: result.tools?.map((t) => t.name) || []\n }\n });\n\n if (!tool) {\n await connection.close();\n return checks;\n }\n\n const inputSchema = tool.inputSchema as Record;\n\n // Check 2: $schema field preserved\n const hasSchema = '$schema' in inputSchema;\n const schemaValue = inputSchema['$schema'];\n const schemaCorrect = schemaValue === EXPECTED_SCHEMA_DIALECT;\n\n checks.push({\n id: 'json-schema-2020-12-$schema',\n name: 'JsonSchema2020_12$Schema',\n description: `inputSchema.$schema field preserved with value '${EXPECTED_SCHEMA_DIALECT}'`,\n status: hasSchema && schemaCorrect ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: !hasSchema\n ? '$schema field missing from inputSchema - field was likely stripped'\n : !schemaCorrect\n ? `$schema has unexpected value: ${JSON.stringify(schemaValue)}`\n : undefined,\n specReferences,\n details: {\n hasSchema,\n schemaValue,\n expected: EXPECTED_SCHEMA_DIALECT\n }\n });\n\n // Check 3: $defs field preserved\n const hasDefs = '$defs' in inputSchema;\n const defsValue = inputSchema['$defs'] as\n | Record\n | undefined;\n const defsHasAddress = defsValue && 'address' in defsValue;\n\n checks.push({\n id: 'json-schema-2020-12-$defs',\n name: 'JsonSchema2020_12$Defs',\n description:\n 'inputSchema.$defs field preserved with expected structure',\n status: hasDefs && defsHasAddress ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: !hasDefs\n ? '$defs field missing from inputSchema - field was likely stripped'\n : !defsHasAddress\n ? '$defs exists but missing expected \"address\" definition'\n : undefined,\n specReferences,\n details: {\n hasDefs,\n defsKeys: defsValue ? Object.keys(defsValue) : [],\n defsValue\n }\n });\n\n // Check 4: additionalProperties field preserved\n const hasAdditionalProps = 'additionalProperties' in inputSchema;\n const additionalPropsValue = inputSchema['additionalProperties'];\n const additionalPropsCorrect = additionalPropsValue === false;\n\n checks.push({\n id: 'json-schema-2020-12-additionalProperties',\n name: 'JsonSchema2020_12AdditionalProperties',\n description: 'inputSchema.additionalProperties field preserved',\n status:\n hasAdditionalProps && additionalPropsCorrect ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: !hasAdditionalProps\n ? 'additionalProperties field missing from inputSchema - field was likely stripped'\n : !additionalPropsCorrect\n ? `additionalProperties has unexpected value: ${JSON.stringify(additionalPropsValue)}, expected: false`\n : undefined,\n specReferences,\n details: {\n hasAdditionalProps,\n additionalPropsValue,\n expected: false\n }\n });\n\n // SEP-2106: the full JSON Schema 2020-12 vocabulary is permitted in\n // inputSchema and must survive tools/list rather than being stripped to\n // properties/required. These checks are soft-gated on the negotiated\n // protocol version (see sep2106KeywordCheckStatus): stripping the\n // keywords is only a FAILURE for servers that negotiated the draft\n // protocol version, and SKIPPED otherwise.\n const skippedSuffix = ` (server negotiated protocol version ${negotiatedVersion ?? 'unknown'}; SEP-2106 applies from ${DRAFT_PROTOCOL_VERSION})`;\n\n // Check 5: composition keywords (allOf / anyOf) preserved\n const allOf = inputSchema['allOf'];\n const hasAllOf = Array.isArray(allOf) && allOf.length > 0;\n const hasNestedAnyOf =\n Array.isArray(allOf) &&\n allOf.some(\n (sub) =>\n typeof sub === 'object' &&\n sub !== null &&\n Array.isArray((sub as Record)['anyOf'])\n );\n const compositionPreserved = hasAllOf && hasNestedAnyOf;\n const compositionStatus = sep2106KeywordCheckStatus(\n compositionPreserved,\n negotiatedVersion\n );\n\n checks.push({\n id: 'sep-2106-composition-keywords-preserved',\n name: 'JsonSchema2020_12CompositionKeywords',\n description:\n 'inputSchema composition keywords (allOf/anyOf) preserved (SEP-2106)',\n status: compositionStatus,\n timestamp: new Date().toISOString(),\n errorMessage: compositionPreserved\n ? undefined\n : (!hasAllOf\n ? 'allOf keyword missing from inputSchema - composition keyword was likely stripped'\n : 'nested anyOf missing from allOf - composition keyword was likely stripped') +\n (compositionStatus === 'SKIPPED' ? skippedSuffix : ''),\n specReferences: sep2106References,\n details: {\n hasAllOf,\n hasNestedAnyOf,\n negotiatedProtocolVersion: negotiatedVersion\n }\n });\n\n // Check 6: conditional keywords (if / then / else) preserved\n const hasIf = 'if' in inputSchema;\n const hasThen = 'then' in inputSchema;\n const hasElse = 'else' in inputSchema;\n const conditionalPreserved = hasIf && hasThen && hasElse;\n const conditionalStatus = sep2106KeywordCheckStatus(\n conditionalPreserved,\n negotiatedVersion\n );\n\n checks.push({\n id: 'sep-2106-conditional-keywords-preserved',\n name: 'JsonSchema2020_12ConditionalKeywords',\n description:\n 'inputSchema conditional keywords (if/then/else) preserved (SEP-2106)',\n status: conditionalStatus,\n timestamp: new Date().toISOString(),\n errorMessage: conditionalPreserved\n ? undefined\n : `Conditional keywords missing (if=${hasIf}, then=${hasThen}, else=${hasElse}) - likely stripped` +\n (conditionalStatus === 'SKIPPED' ? skippedSuffix : ''),\n specReferences: sep2106References,\n details: {\n hasIf,\n hasThen,\n hasElse,\n negotiatedProtocolVersion: negotiatedVersion\n }\n });\n\n // Check 7: reference keyword ($anchor) preserved within $defs.address\n const addressDef = defsValue?.['address'] as\n | Record\n | undefined;\n const hasAnchor = !!addressDef && '$anchor' in addressDef;\n const anchorStatus = sep2106KeywordCheckStatus(\n hasAnchor,\n negotiatedVersion\n );\n\n checks.push({\n id: 'sep-2106-anchor-keyword-preserved',\n name: 'JsonSchema2020_12AnchorKeyword',\n description:\n 'inputSchema reference keyword ($anchor) preserved in $defs (SEP-2106)',\n status: anchorStatus,\n timestamp: new Date().toISOString(),\n errorMessage: hasAnchor\n ? undefined\n : '$anchor missing from $defs.address - reference keyword was likely stripped' +\n (anchorStatus === 'SKIPPED' ? skippedSuffix : ''),\n specReferences: sep2106References,\n details: {\n hasAnchor,\n anchorValue: addressDef?.['$anchor']\n }\n });\n\n await connection.close();\n } catch (error) {\n checks.push({\n id: 'json-schema-2020-12-error',\n name: 'JsonSchema2020_12Error',\n description: 'JSON Schema 2020-12 conformance test',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences\n });\n }\n\n return checks;\n }\n}\n",[],[128,233,243,301],"1e5af79e-716f-4184-ae4c-3a1cb9723f24","input-required-result.ts","d7b87e42-ad13-11f1-8e58-1607ee4eb77e",18,["D",1789043616021],"/**\n * SEP-2322: InputRequiredResult - Ephemeral Workflow Tests\n *\n * Tests the ephemeral (stateless) workflow where servers respond with\n * InputRequiredResult containing inputRequests and/or requestState, and\n * clients retry with inputResponses and echoed requestState.\n */\n\nimport {\n ClientScenario,\n ConformanceCheck,\n DRAFT_PROTOCOL_VERSION,\n SpecVersion\n} from '../../types.ts';\nimport {\n sendRpc,\n isInputRequiredResult,\n isCompleteResult,\n mockElicitResponse,\n mockSamplingResponse,\n mockListRootsResponse,\n MRTR_SPEC_REFERENCES\n} from './input-required-result-helpers.ts';\n\n// ─── A1: Basic Elicitation ────────────────────────────────────────────────────\n\nexport class InputRequiredResultBasicElicitationScenario implements ClientScenario {\n name = 'input-required-result-basic-elicitation';\n readonly source = { introducedIn: DRAFT_PROTOCOL_VERSION } as const;\n specVersions: SpecVersion[] = [DRAFT_PROTOCOL_VERSION];\n description = `Test basic ephemeral InputRequiredResult flow with a single elicitation input request (SEP-2322).\n\n**Server Implementation Requirements:**\n\nImplement a tool named \\`test_input_required_result_elicitation\\` (no arguments required).\n\n**Behavior (Round 1):** When called without \\`inputResponses\\`, return an \\`InputRequiredResult\\`:\n\n\\`\\`\\`json\n{\n \"resultType\": \"input_required\",\n \"inputRequests\": {\n \"user_name\": {\n \"method\": \"elicitation/create\",\n \"params\": {\n \"message\": \"What is your name?\",\n \"requestedSchema\": {\n \"type\": \"object\",\n \"properties\": {\n \"name\": { \"type\": \"string\" }\n },\n \"required\": [\"name\"]\n }\n }\n }\n }\n}\n\\`\\`\\`\n\n**Behavior (Round 2):** When called with \\`inputResponses\\` containing the key \\`\"user_name\"\\`, return a complete result:\n\n\\`\\`\\`json\n{\n \"content\": [{ \"type\": \"text\", \"text\": \"Hello, !\" }]\n}\n\\`\\`\\``;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n try {\n // Round 1: Initial call — expect InputRequiredResult\n const r1 = await sendRpc(serverUrl, 'tools/call', {\n name: 'test_input_required_result_elicitation',\n arguments: {}\n });\n\n const r1Result = r1.result;\n const r1Errors: string[] = [];\n\n if (r1.error) {\n r1Errors.push(`JSON-RPC error: ${r1.error.message}`);\n } else if (!r1Result) {\n r1Errors.push('No result in response');\n } else if (!isInputRequiredResult(r1Result)) {\n r1Errors.push(\n 'Expected InputRequiredResult but got a complete result. ' +\n 'Server should return resultType: \"input_required\" with inputRequests.'\n );\n } else {\n if (!r1Result.inputRequests) {\n r1Errors.push('InputRequiredResult missing inputRequests');\n } else if (!r1Result.inputRequests['user_name']) {\n r1Errors.push('inputRequests missing expected key \"user_name\"');\n } else {\n const req = r1Result.inputRequests['user_name'];\n if (req.method !== 'elicitation/create') {\n r1Errors.push(\n `Expected method \"elicitation/create\", got \"${req.method}\"`\n );\n }\n }\n }\n\n checks.push({\n id: 'sep-2322-elicitation-incomplete',\n name: 'InputRequiredResultElicitationIncomplete',\n description:\n 'Server returns InputRequiredResult with elicitation inputRequest',\n status: r1Errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: r1Errors.length > 0 ? r1Errors.join('; ') : undefined,\n specReferences: MRTR_SPEC_REFERENCES,\n details: { result: r1Result }\n });\n\n // Round 2: Retry with inputResponses — expect complete result\n if (r1Errors.length === 0 && isInputRequiredResult(r1Result)) {\n const r2 = await sendRpc(serverUrl, 'tools/call', {\n name: 'test_input_required_result_elicitation',\n arguments: {},\n inputResponses: {\n user_name: mockElicitResponse({ name: 'Alice' })\n },\n ...(r1Result.requestState !== undefined\n ? { requestState: r1Result.requestState }\n : {})\n });\n\n const r2Result = r2.result;\n const r2Errors: string[] = [];\n\n if (r2.error) {\n r2Errors.push(`JSON-RPC error: ${r2.error.message}`);\n } else if (!r2Result) {\n r2Errors.push('No result in response');\n } else if (!isCompleteResult(r2Result)) {\n r2Errors.push(\n 'Expected complete result after retry with inputResponses'\n );\n } else {\n const content = r2Result.content as\n | Array<{ type: string; text?: string }>\n | undefined;\n if (!content || !Array.isArray(content) || content.length === 0) {\n r2Errors.push('Complete result missing content array');\n }\n }\n\n checks.push({\n id: 'sep-2322-elicitation-complete',\n name: 'InputRequiredResultElicitationComplete',\n description:\n 'Server returns complete result after retry with inputResponses',\n status: r2Errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: r2Errors.length > 0 ? r2Errors.join('; ') : undefined,\n specReferences: MRTR_SPEC_REFERENCES,\n details: { result: r2Result }\n });\n }\n } catch (error) {\n checks.push({\n id: 'sep-2322-elicitation-incomplete',\n name: 'InputRequiredResultElicitationIncomplete',\n description:\n 'Server returns InputRequiredResult with elicitation inputRequest',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: MRTR_SPEC_REFERENCES\n });\n }\n\n return checks;\n }\n}\n\n// ─── A2: Basic Sampling ──────────────────────────────────────────────────────\n\nexport class InputRequiredResultBasicSamplingScenario implements ClientScenario {\n name = 'input-required-result-basic-sampling';\n readonly source = { introducedIn: DRAFT_PROTOCOL_VERSION } as const;\n specVersions: SpecVersion[] = [DRAFT_PROTOCOL_VERSION];\n description = `Test basic ephemeral InputRequiredResult flow with a single sampling input request (SEP-2322).\n\n**Server Implementation Requirements:**\n\nImplement a tool named \\`test_input_required_result_sampling\\` (no arguments required).\n\n**Behavior (Round 1):** When called without \\`inputResponses\\`, return an \\`InputRequiredResult\\`:\n\n\\`\\`\\`json\n{\n \"resultType\": \"input_required\",\n \"inputRequests\": {\n \"capital_question\": {\n \"method\": \"sampling/createMessage\",\n \"params\": {\n \"messages\": [{\n \"role\": \"user\",\n \"content\": { \"type\": \"text\", \"text\": \"What is the capital of France?\" }\n }],\n \"maxTokens\": 100\n }\n }\n }\n}\n\\`\\`\\`\n\n**Behavior (Round 2):** When called with \\`inputResponses\\` containing the key \\`\"capital_question\"\\`, return a complete result with the sampling response text.`;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n try {\n // Round 1: Initial call\n const r1 = await sendRpc(serverUrl, 'tools/call', {\n name: 'test_input_required_result_sampling',\n arguments: {}\n });\n\n const r1Result = r1.result;\n const r1Errors: string[] = [];\n\n if (r1.error) {\n r1Errors.push(`JSON-RPC error: ${r1.error.message}`);\n } else if (!r1Result) {\n r1Errors.push('No result in response');\n } else if (!isInputRequiredResult(r1Result)) {\n r1Errors.push(\n 'Expected InputRequiredResult with sampling inputRequest'\n );\n } else {\n if (!r1Result.inputRequests) {\n r1Errors.push('InputRequiredResult missing inputRequests');\n } else {\n const key = Object.keys(r1Result.inputRequests)[0];\n if (!key) {\n r1Errors.push('inputRequests map is empty');\n } else {\n const req = r1Result.inputRequests[key];\n if (req.method !== 'sampling/createMessage') {\n r1Errors.push(\n `Expected method \"sampling/createMessage\", got \"${req.method}\"`\n );\n }\n }\n }\n }\n\n checks.push({\n id: 'sep-2322-sampling-incomplete',\n name: 'InputRequiredResultSamplingIncomplete',\n description:\n 'Server returns InputRequiredResult with sampling inputRequest',\n status: r1Errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: r1Errors.length > 0 ? r1Errors.join('; ') : undefined,\n specReferences: MRTR_SPEC_REFERENCES,\n details: { result: r1Result }\n });\n\n // Round 2: Retry with inputResponses\n if (r1Errors.length === 0 && isInputRequiredResult(r1Result)) {\n const inputKey = Object.keys(r1Result.inputRequests!)[0];\n const r2 = await sendRpc(serverUrl, 'tools/call', {\n name: 'test_input_required_result_sampling',\n arguments: {},\n inputResponses: {\n [inputKey]: mockSamplingResponse('The capital of France is Paris.')\n },\n ...(r1Result.requestState !== undefined\n ? { requestState: r1Result.requestState }\n : {})\n });\n\n const r2Result = r2.result;\n const r2Errors: string[] = [];\n\n if (r2.error) {\n r2Errors.push(`JSON-RPC error: ${r2.error.message}`);\n } else if (!r2Result) {\n r2Errors.push('No result in response');\n } else if (!isCompleteResult(r2Result)) {\n r2Errors.push(\n 'Expected complete result after retry with sampling response'\n );\n }\n\n checks.push({\n id: 'sep-2322-sampling-complete',\n name: 'InputRequiredResultSamplingComplete',\n description:\n 'Server returns complete result after retry with sampling response',\n status: r2Errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: r2Errors.length > 0 ? r2Errors.join('; ') : undefined,\n specReferences: MRTR_SPEC_REFERENCES,\n details: { result: r2Result }\n });\n }\n } catch (error) {\n checks.push({\n id: 'sep-2322-sampling-incomplete',\n name: 'InputRequiredResultSamplingIncomplete',\n description:\n 'Server returns InputRequiredResult with sampling inputRequest',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: MRTR_SPEC_REFERENCES\n });\n }\n\n return checks;\n }\n}\n\n// ─── A3: Basic ListRoots ─────────────────────────────────────────────────────\n\nexport class InputRequiredResultBasicListRootsScenario implements ClientScenario {\n name = 'input-required-result-basic-list-roots';\n readonly source = { introducedIn: DRAFT_PROTOCOL_VERSION } as const;\n specVersions: SpecVersion[] = [DRAFT_PROTOCOL_VERSION];\n description = `Test basic ephemeral InputRequiredResult flow with a single roots/list input request (SEP-2322).\n\n**Server Implementation Requirements:**\n\nImplement a tool named \\`test_input_required_result_list_roots\\` (no arguments required).\n\n**Behavior (Round 1):** When called without \\`inputResponses\\`, return an \\`InputRequiredResult\\`:\n\n\\`\\`\\`json\n{\n \"resultType\": \"input_required\",\n \"inputRequests\": {\n \"client_roots\": {\n \"method\": \"roots/list\",\n \"params\": {}\n }\n }\n}\n\\`\\`\\`\n\n**Behavior (Round 2):** When called with \\`inputResponses\\` containing the key \\`\"client_roots\"\\` (a ListRootsResult with a \\`roots\\` array), return a complete result that references the provided roots.`;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n try {\n // Round 1: Initial call\n const r1 = await sendRpc(serverUrl, 'tools/call', {\n name: 'test_input_required_result_list_roots',\n arguments: {}\n });\n\n const r1Result = r1.result;\n const r1Errors: string[] = [];\n\n if (r1.error) {\n r1Errors.push(`JSON-RPC error: ${r1.error.message}`);\n } else if (!r1Result) {\n r1Errors.push('No result in response');\n } else if (!isInputRequiredResult(r1Result)) {\n r1Errors.push(\n 'Expected InputRequiredResult with roots/list inputRequest'\n );\n } else {\n if (!r1Result.inputRequests) {\n r1Errors.push('InputRequiredResult missing inputRequests');\n } else {\n const key = Object.keys(r1Result.inputRequests)[0];\n if (!key) {\n r1Errors.push('inputRequests map is empty');\n } else {\n const req = r1Result.inputRequests[key];\n if (req.method !== 'roots/list') {\n r1Errors.push(\n `Expected method \"roots/list\", got \"${req.method}\"`\n );\n }\n }\n }\n }\n\n checks.push({\n id: 'sep-2322-list-roots-incomplete',\n name: 'InputRequiredResultListRootsIncomplete',\n description:\n 'Server returns InputRequiredResult with roots/list inputRequest',\n status: r1Errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: r1Errors.length > 0 ? r1Errors.join('; ') : undefined,\n specReferences: MRTR_SPEC_REFERENCES,\n details: { result: r1Result }\n });\n\n // Round 2: Retry with inputResponses\n if (r1Errors.length === 0 && isInputRequiredResult(r1Result)) {\n const inputKey = Object.keys(r1Result.inputRequests!)[0];\n const r2 = await sendRpc(serverUrl, 'tools/call', {\n name: 'test_input_required_result_list_roots',\n arguments: {},\n inputResponses: {\n [inputKey]: mockListRootsResponse()\n },\n ...(r1Result.requestState !== undefined\n ? { requestState: r1Result.requestState }\n : {})\n });\n\n const r2Result = r2.result;\n const r2Errors: string[] = [];\n\n if (r2.error) {\n r2Errors.push(`JSON-RPC error: ${r2.error.message}`);\n } else if (!r2Result) {\n r2Errors.push('No result in response');\n } else if (!isCompleteResult(r2Result)) {\n r2Errors.push(\n 'Expected complete result after retry with roots response'\n );\n }\n\n checks.push({\n id: 'sep-2322-list-roots-complete',\n name: 'InputRequiredResultListRootsComplete',\n description:\n 'Server returns complete result after retry with roots response',\n status: r2Errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: r2Errors.length > 0 ? r2Errors.join('; ') : undefined,\n specReferences: MRTR_SPEC_REFERENCES,\n details: { result: r2Result }\n });\n }\n } catch (error) {\n checks.push({\n id: 'sep-2322-list-roots-incomplete',\n name: 'InputRequiredResultListRootsIncomplete',\n description:\n 'Server returns InputRequiredResult with roots/list inputRequest',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: MRTR_SPEC_REFERENCES\n });\n }\n\n return checks;\n }\n}\n\n// ─── A4: Request State ──────────────────────────────────────────────────────\n\nexport class InputRequiredResultRequestStateScenario implements ClientScenario {\n name = 'input-required-result-request-state';\n readonly source = { introducedIn: DRAFT_PROTOCOL_VERSION } as const;\n specVersions: SpecVersion[] = [DRAFT_PROTOCOL_VERSION];\n description = `Test that requestState is correctly round-tripped in ephemeral InputRequiredResult flow (SEP-2322).\n\n**Server Implementation Requirements:**\n\nImplement a tool named \\`test_input_required_result_request_state\\` (no arguments required).\n\n**Behavior (Round 1):** Return an \\`InputRequiredResult\\` with both \\`inputRequests\\` and \\`requestState\\`:\n\n\\`\\`\\`json\n{\n \"resultType\": \"input_required\",\n \"inputRequests\": {\n \"confirm\": {\n \"method\": \"elicitation/create\",\n \"params\": {\n \"message\": \"Please confirm\",\n \"requestedSchema\": {\n \"type\": \"object\",\n \"properties\": { \"ok\": { \"type\": \"boolean\" } },\n \"required\": [\"ok\"]\n }\n }\n }\n },\n \"requestState\": \"\"\n}\n\\`\\`\\`\n\n**Behavior (Round 2):** When called with \\`inputResponses\\` AND the echoed \\`requestState\\`, validate the state and return a complete result. The text content MUST include the word \"state-ok\" to confirm the server received and validated the requestState.`;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n try {\n // Round 1\n const r1 = await sendRpc(serverUrl, 'tools/call', {\n name: 'test_input_required_result_request_state',\n arguments: {}\n });\n\n const r1Result = r1.result;\n const r1Errors: string[] = [];\n\n if (r1.error) {\n r1Errors.push(`JSON-RPC error: ${r1.error.message}`);\n } else if (!r1Result || !isInputRequiredResult(r1Result)) {\n r1Errors.push('Expected InputRequiredResult');\n } else {\n if (!r1Result.requestState) {\n r1Errors.push('InputRequiredResult missing requestState');\n }\n if (typeof r1Result.requestState !== 'string') {\n r1Errors.push('requestState must be a string');\n }\n if (!r1Result.inputRequests) {\n r1Errors.push('InputRequiredResult missing inputRequests');\n }\n }\n\n checks.push({\n id: 'sep-2322-request-state-incomplete',\n name: 'InputRequiredResultRequestStateIncomplete',\n description:\n 'Server returns InputRequiredResult with both inputRequests and requestState',\n status: r1Errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: r1Errors.length > 0 ? r1Errors.join('; ') : undefined,\n specReferences: MRTR_SPEC_REFERENCES,\n details: { result: r1Result }\n });\n\n // Round 2: Retry with inputResponses + requestState\n if (r1Errors.length === 0 && isInputRequiredResult(r1Result)) {\n const inputKey = Object.keys(r1Result.inputRequests!)[0];\n const r2 = await sendRpc(serverUrl, 'tools/call', {\n name: 'test_input_required_result_request_state',\n arguments: {},\n inputResponses: {\n [inputKey]: mockElicitResponse({ ok: true })\n },\n requestState: r1Result.requestState\n });\n\n const r2Result = r2.result;\n const r2Errors: string[] = [];\n\n if (r2.error) {\n r2Errors.push(`JSON-RPC error: ${r2.error.message}`);\n } else if (!r2Result) {\n r2Errors.push('No result in response');\n } else if (!isCompleteResult(r2Result)) {\n r2Errors.push(\n 'Expected complete result after retry with requestState'\n );\n }\n\n checks.push({\n id: 'sep-2322-request-state-complete',\n name: 'InputRequiredResultRequestStateComplete',\n description:\n 'Server validates echoed requestState and returns complete result',\n status: r2Errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: r2Errors.length > 0 ? r2Errors.join('; ') : undefined,\n specReferences: MRTR_SPEC_REFERENCES,\n details: { result: r2Result }\n });\n }\n } catch (error) {\n checks.push({\n id: 'sep-2322-request-state-incomplete',\n name: 'InputRequiredResultRequestStateIncomplete',\n description:\n 'Server returns InputRequiredResult with both inputRequests and requestState',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: MRTR_SPEC_REFERENCES\n });\n }\n\n return checks;\n }\n}\n\n// ─── A5: Multiple Input Requests ─────────────────────────────────────────────\n\nexport class InputRequiredResultMultipleInputRequestsScenario implements ClientScenario {\n name = 'input-required-result-multiple-input-requests';\n readonly source = { introducedIn: DRAFT_PROTOCOL_VERSION } as const;\n specVersions: SpecVersion[] = [DRAFT_PROTOCOL_VERSION];\n description = `Test multiple input requests in a single InputRequiredResult (SEP-2322).\n\n**Server Implementation Requirements:**\n\nImplement a tool named \\`test_input_required_result_multiple_inputs\\` (no arguments required).\n\n**Behavior (Round 1):** Return an \\`InputRequiredResult\\` with multiple \\`inputRequests\\` — elicitation, sampling, and roots/list — plus \\`requestState\\`:\n\n\\`\\`\\`json\n{\n \"resultType\": \"input_required\",\n \"inputRequests\": {\n \"user_name\": {\n \"method\": \"elicitation/create\",\n \"params\": {\n \"message\": \"What is your name?\",\n \"requestedSchema\": {\n \"type\": \"object\",\n \"properties\": { \"name\": { \"type\": \"string\" } },\n \"required\": [\"name\"]\n }\n }\n },\n \"greeting\": {\n \"method\": \"sampling/createMessage\",\n \"params\": {\n \"messages\": [{ \"role\": \"user\", \"content\": { \"type\": \"text\", \"text\": \"Generate a greeting\" } }],\n \"maxTokens\": 50\n }\n },\n \"client_roots\": {\n \"method\": \"roots/list\",\n \"params\": {}\n }\n },\n \"requestState\": \"\"\n}\n\\`\\`\\`\n\n**Behavior (Round 2):** When called with \\`inputResponses\\` containing ALL keys and the echoed \\`requestState\\`, return a complete result.`;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n try {\n // Round 1\n const r1 = await sendRpc(serverUrl, 'tools/call', {\n name: 'test_input_required_result_multiple_inputs',\n arguments: {}\n });\n\n const r1Result = r1.result;\n const r1Errors: string[] = [];\n\n if (r1.error) {\n r1Errors.push(`JSON-RPC error: ${r1.error.message}`);\n } else if (!r1Result || !isInputRequiredResult(r1Result)) {\n r1Errors.push('Expected InputRequiredResult');\n } else if (!r1Result.inputRequests) {\n r1Errors.push('InputRequiredResult missing inputRequests');\n } else {\n if (!r1Result.requestState) {\n r1Errors.push('InputRequiredResult missing requestState');\n }\n\n const keys = Object.keys(r1Result.inputRequests);\n if (keys.length < 3) {\n r1Errors.push(\n `Expected at least 3 inputRequests, got ${keys.length}`\n );\n }\n\n // Check that required method types are present\n const methods = new Set(\n keys.map((k) => r1Result.inputRequests![k].method)\n );\n if (!methods.has('elicitation/create')) {\n r1Errors.push('Expected an elicitation/create inputRequest');\n }\n if (!methods.has('sampling/createMessage')) {\n r1Errors.push('Expected a sampling/createMessage inputRequest');\n }\n if (!methods.has('roots/list')) {\n r1Errors.push('Expected a roots/list inputRequest');\n }\n if (methods.size < 3) {\n r1Errors.push(\n 'Expected inputRequests with different method types (elicitation + sampling + roots/list)'\n );\n }\n }\n\n checks.push({\n id: 'sep-2322-multiple-inputs-incomplete',\n name: 'InputRequiredResultMultipleInputsIncomplete',\n description:\n 'Server returns InputRequiredResult with multiple inputRequests of different types',\n status: r1Errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: r1Errors.length > 0 ? r1Errors.join('; ') : undefined,\n specReferences: MRTR_SPEC_REFERENCES,\n details: { result: r1Result }\n });\n\n // Round 2: Respond to all input requests\n if (r1Errors.length === 0 && isInputRequiredResult(r1Result)) {\n const inputResponses: Record = {};\n for (const [key, req] of Object.entries(r1Result.inputRequests!)) {\n if (req.method === 'elicitation/create') {\n inputResponses[key] = mockElicitResponse({ name: 'Alice' });\n } else if (req.method === 'sampling/createMessage') {\n inputResponses[key] = mockSamplingResponse('Hello there!');\n } else if (req.method === 'roots/list') {\n inputResponses[key] = mockListRootsResponse();\n }\n }\n\n const r2 = await sendRpc(serverUrl, 'tools/call', {\n name: 'test_input_required_result_multiple_inputs',\n arguments: {},\n inputResponses,\n ...(r1Result.requestState !== undefined\n ? { requestState: r1Result.requestState }\n : {})\n });\n\n const r2Result = r2.result;\n const r2Errors: string[] = [];\n\n if (r2.error) {\n r2Errors.push(`JSON-RPC error: ${r2.error.message}`);\n } else if (!r2Result) {\n r2Errors.push('No result in response');\n } else if (!isCompleteResult(r2Result)) {\n r2Errors.push(\n 'Expected complete result after providing all inputResponses'\n );\n }\n\n checks.push({\n id: 'sep-2322-multiple-inputs-complete',\n name: 'InputRequiredResultMultipleInputsComplete',\n description:\n 'Server returns complete result after all inputResponses are provided',\n status: r2Errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: r2Errors.length > 0 ? r2Errors.join('; ') : undefined,\n specReferences: MRTR_SPEC_REFERENCES,\n details: { result: r2Result }\n });\n }\n } catch (error) {\n checks.push({\n id: 'sep-2322-multiple-inputs-incomplete',\n name: 'InputRequiredResultMultipleInputsIncomplete',\n description:\n 'Server returns InputRequiredResult with multiple inputRequests of different types',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: MRTR_SPEC_REFERENCES\n });\n }\n\n return checks;\n }\n}\n\n// ─── A6: Multi-Round ─────────────────────────────────────────────────────────\n\nexport class InputRequiredResultMultiRoundScenario implements ClientScenario {\n name = 'input-required-result-multi-round';\n readonly source = { introducedIn: DRAFT_PROTOCOL_VERSION } as const;\n specVersions: SpecVersion[] = [DRAFT_PROTOCOL_VERSION];\n description = `Test multi-round ephemeral InputRequiredResult flow with evolving requestState (SEP-2322).\n\n**Server Implementation Requirements:**\n\nImplement a tool named \\`test_input_required_result_multi_round\\` (no arguments required).\n\n**Behavior (Round 1):** Return an \\`InputRequiredResult\\` with an elicitation request and \\`requestState\\`:\n\n\\`\\`\\`json\n{\n \"resultType\": \"input_required\",\n \"inputRequests\": {\n \"step1\": {\n \"method\": \"elicitation/create\",\n \"params\": {\n \"message\": \"Step 1: What is your name?\",\n \"requestedSchema\": {\n \"type\": \"object\",\n \"properties\": { \"name\": { \"type\": \"string\" } },\n \"required\": [\"name\"]\n }\n }\n }\n },\n \"requestState\": \"\"\n}\n\\`\\`\\`\n\n**Behavior (Round 2):** When called with \\`inputResponses\\` for step1 + requestState, return ANOTHER \\`InputRequiredResult\\` with a new elicitation and updated requestState:\n\n\\`\\`\\`json\n{\n \"resultType\": \"input_required\",\n \"inputRequests\": {\n \"step2\": {\n \"method\": \"elicitation/create\",\n \"params\": {\n \"message\": \"Step 2: What is your favorite color?\",\n \"requestedSchema\": {\n \"type\": \"object\",\n \"properties\": { \"color\": { \"type\": \"string\" } },\n \"required\": [\"color\"]\n }\n }\n }\n },\n \"requestState\": \"\"\n}\n\\`\\`\\`\n\n**Behavior (Round 3):** When called with \\`inputResponses\\` for step2 + updated requestState, return a complete result.`;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n try {\n // Round 1\n const r1 = await sendRpc(serverUrl, 'tools/call', {\n name: 'test_input_required_result_multi_round',\n arguments: {}\n });\n\n const r1Result = r1.result;\n let round1Complete = false;\n\n if (\n !r1.error &&\n r1Result &&\n isInputRequiredResult(r1Result) &&\n r1Result.inputRequests &&\n r1Result.requestState\n ) {\n round1Complete = true;\n }\n\n checks.push({\n id: 'sep-2322-multi-round-r1',\n name: 'InputRequiredResultMultiRoundR1',\n description:\n 'Round 1: Server returns InputRequiredResult with requestState',\n status: round1Complete ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: round1Complete\n ? undefined\n : 'Expected InputRequiredResult with inputRequests and requestState',\n specReferences: MRTR_SPEC_REFERENCES,\n details: { result: r1Result }\n });\n\n if (!round1Complete || !isInputRequiredResult(r1Result)) return checks;\n\n // Round 2: Retry — expect another InputRequiredResult\n const r1InputKey = Object.keys(r1Result.inputRequests!)[0];\n const r2 = await sendRpc(serverUrl, 'tools/call', {\n name: 'test_input_required_result_multi_round',\n arguments: {},\n inputResponses: {\n [r1InputKey]: mockElicitResponse({ name: 'Alice' })\n },\n requestState: r1Result.requestState\n });\n\n const r2Result = r2.result;\n let round2Complete = false;\n\n if (\n !r2.error &&\n r2Result &&\n isInputRequiredResult(r2Result) &&\n r2Result.inputRequests &&\n r2Result.requestState\n ) {\n // requestState should have changed\n if (r2Result.requestState !== r1Result.requestState) {\n round2Complete = true;\n }\n }\n\n checks.push({\n id: 'sep-2322-multi-round-r2',\n name: 'InputRequiredResultMultiRoundR2',\n description:\n 'Round 2: Server returns another InputRequiredResult with updated requestState',\n status: round2Complete ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: round2Complete\n ? undefined\n : 'Expected new InputRequiredResult with different requestState',\n specReferences: MRTR_SPEC_REFERENCES,\n details: { result: r2Result }\n });\n\n if (!round2Complete || !isInputRequiredResult(r2Result)) return checks;\n\n // Round 3: Final retry — expect complete result\n const r2InputKey = Object.keys(r2Result.inputRequests!)[0];\n const r3 = await sendRpc(serverUrl, 'tools/call', {\n name: 'test_input_required_result_multi_round',\n arguments: {},\n inputResponses: {\n [r2InputKey]: mockElicitResponse({ color: 'blue' })\n },\n requestState: r2Result.requestState\n });\n\n const r3Result = r3.result;\n const round3Complete =\n !r3.error && r3Result != null && isCompleteResult(r3Result);\n\n checks.push({\n id: 'sep-2322-multi-round-r3',\n name: 'InputRequiredResultMultiRoundR3',\n description: 'Round 3: Server returns complete result',\n status: round3Complete ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: round3Complete\n ? undefined\n : 'Expected complete result after final retry',\n specReferences: MRTR_SPEC_REFERENCES,\n details: { result: r3Result }\n });\n } catch (error) {\n checks.push({\n id: 'sep-2322-multi-round-r1',\n name: 'InputRequiredResultMultiRoundR1',\n description:\n 'Round 1: Server returns InputRequiredResult with requestState',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: MRTR_SPEC_REFERENCES\n });\n }\n\n return checks;\n }\n}\n\n// ─── A7: Missing Input Response ──────────────────────────────────────────────\n\nexport class InputRequiredResultMissingInputResponseScenario implements ClientScenario {\n name = 'input-required-result-missing-input-response';\n readonly source = { introducedIn: DRAFT_PROTOCOL_VERSION } as const;\n specVersions: SpecVersion[] = [DRAFT_PROTOCOL_VERSION];\n description = `Test error handling when client sends wrong/missing inputResponses (SEP-2322).\n\n**Server Implementation Requirements:**\n\nUse the same tool as A1: \\`test_input_required_result_elicitation\\`.\n\n**Behavior:** When the client retries with \\`inputResponses\\` that are missing required keys or contain wrong keys, the server SHOULD respond with a new \\`InputRequiredResult\\` re-requesting the missing information (NOT a JSON-RPC error).`;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n try {\n // Round 1: Send wrong inputResponses (wrong key)\n const r1 = await sendRpc(serverUrl, 'tools/call', {\n name: 'test_input_required_result_elicitation',\n arguments: {},\n inputResponses: {\n wrong_key: mockElicitResponse({ data: 'wrong' })\n }\n });\n\n const r1Result = r1.result;\n const r1Errors: string[] = [];\n\n if (r1.error) {\n // A JSON-RPC error is acceptable but the SEP prefers re-requesting\n r1Errors.push(\n 'Server returned JSON-RPC error instead of re-requesting via InputRequiredResult. ' +\n 'SEP-2322 recommends servers re-request missing information.'\n );\n } else if (!r1Result) {\n r1Errors.push('No result in response');\n } else if (!isInputRequiredResult(r1Result)) {\n r1Errors.push(\n 'Expected InputRequiredResult re-requesting missing information, ' +\n 'but got a complete result'\n );\n }\n\n checks.push({\n id: 'sep-2322-missing-response-rerequests',\n name: 'InputRequiredResultMissingResponseRerequests',\n description:\n 'Server re-requests missing inputResponses via new InputRequiredResult',\n status: r1Errors.length === 0 ? 'SUCCESS' : 'WARNING',\n timestamp: new Date().toISOString(),\n errorMessage: r1Errors.length > 0 ? r1Errors.join('; ') : undefined,\n specReferences: MRTR_SPEC_REFERENCES,\n details: { result: r1Result }\n });\n } catch (error) {\n checks.push({\n id: 'sep-2322-missing-response-rerequests',\n name: 'InputRequiredResultMissingResponseRerequests',\n description:\n 'Server re-requests missing inputResponses via new InputRequiredResult',\n status: 'WARNING',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: MRTR_SPEC_REFERENCES\n });\n }\n\n return checks;\n }\n}\n\n// ─── A9: Non-Tool Request (prompts/get) ──────────────────────────────────────\n\nexport class InputRequiredResultNonToolRequestScenario implements ClientScenario {\n name = 'input-required-result-non-tool-request';\n readonly source = { introducedIn: DRAFT_PROTOCOL_VERSION } as const;\n specVersions: SpecVersion[] = [DRAFT_PROTOCOL_VERSION];\n description = `Test InputRequiredResult on a non-tool request (prompts/get) to verify InputRequiredResult is universal (SEP-2322).\n\n**Server Implementation Requirements:**\n\nImplement a prompt named \\`test_input_required_result_prompt\\` that requires elicitation input.\n\n**Behavior (Round 1):** When \\`prompts/get\\` is called for \\`test_input_required_result_prompt\\` without \\`inputResponses\\`, return an \\`InputRequiredResult\\`:\n\n\\`\\`\\`json\n{\n \"resultType\": \"input_required\",\n \"inputRequests\": {\n \"user_context\": {\n \"method\": \"elicitation/create\",\n \"params\": {\n \"message\": \"What context should the prompt use?\",\n \"requestedSchema\": {\n \"type\": \"object\",\n \"properties\": { \"context\": { \"type\": \"string\" } },\n \"required\": [\"context\"]\n }\n }\n }\n }\n}\n\\`\\`\\`\n\n**Behavior (Round 2):** When called with \\`inputResponses\\`, return a complete \\`GetPromptResult\\`.`;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n try {\n // Round 1\n const r1 = await sendRpc(serverUrl, 'prompts/get', {\n name: 'test_input_required_result_prompt'\n });\n\n const r1Result = r1.result;\n const r1Errors: string[] = [];\n\n if (r1.error) {\n r1Errors.push(`JSON-RPC error: ${r1.error.message}`);\n } else if (!r1Result || !isInputRequiredResult(r1Result)) {\n r1Errors.push('Expected InputRequiredResult from prompts/get');\n } else if (!r1Result.inputRequests) {\n r1Errors.push('InputRequiredResult missing inputRequests');\n }\n\n checks.push({\n id: 'sep-2322-non-tool-incomplete',\n name: 'InputRequiredResultNonToolIncomplete',\n description:\n 'prompts/get returns InputRequiredResult with inputRequests',\n status: r1Errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: r1Errors.length > 0 ? r1Errors.join('; ') : undefined,\n specReferences: MRTR_SPEC_REFERENCES,\n details: { result: r1Result }\n });\n\n // Round 2: Retry with inputResponses\n if (r1Errors.length === 0 && isInputRequiredResult(r1Result)) {\n const inputKey = Object.keys(r1Result.inputRequests!)[0];\n const r2 = await sendRpc(serverUrl, 'prompts/get', {\n name: 'test_input_required_result_prompt',\n inputResponses: {\n [inputKey]: mockElicitResponse({ context: 'test context' })\n },\n ...(r1Result.requestState !== undefined\n ? { requestState: r1Result.requestState }\n : {})\n });\n\n const r2Result = r2.result;\n const r2Errors: string[] = [];\n\n if (r2.error) {\n r2Errors.push(`JSON-RPC error: ${r2.error.message}`);\n } else if (!r2Result) {\n r2Errors.push('No result in response');\n } else if (!isCompleteResult(r2Result)) {\n r2Errors.push('Expected complete GetPromptResult after retry');\n } else if (!r2Result.messages) {\n r2Errors.push(\n 'Complete result missing messages (expected GetPromptResult)'\n );\n }\n\n checks.push({\n id: 'sep-2322-non-tool-complete',\n name: 'InputRequiredResultNonToolComplete',\n description:\n 'prompts/get returns complete GetPromptResult after retry with inputResponses',\n status: r2Errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: r2Errors.length > 0 ? r2Errors.join('; ') : undefined,\n specReferences: MRTR_SPEC_REFERENCES,\n details: { result: r2Result }\n });\n }\n } catch (error) {\n checks.push({\n id: 'sep-2322-non-tool-incomplete',\n name: 'InputRequiredResultNonToolIncomplete',\n description:\n 'prompts/get returns InputRequiredResult with inputRequests',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: MRTR_SPEC_REFERENCES\n });\n }\n\n return checks;\n }\n}\n\n// ─── A10: ResultType Included ────────────────────────────────────────────────\n\nexport class InputRequiredResultResultTypeScenario implements ClientScenario {\n name = 'input-required-result-result-type';\n readonly source = { introducedIn: DRAFT_PROTOCOL_VERSION } as const;\n specVersions: SpecVersion[] = [DRAFT_PROTOCOL_VERSION];\n description = `Test that server explicitly includes resultType field in InputRequiredResult responses (SEP-2322).\n\n**Server Implementation Requirements:**\n\nUses the same tool as A1: \\`test_input_required_result_elicitation\\`.\n\nThis scenario verifies that the resultType field is explicitly present in the response (not just inferred).`;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n try {\n const r1 = await sendRpc(serverUrl, 'tools/call', {\n name: 'test_input_required_result_elicitation',\n arguments: {}\n });\n\n const r1Result = r1.result;\n const errors: string[] = [];\n\n if (r1.error) {\n errors.push(`JSON-RPC error: ${r1.error.message}`);\n } else if (!r1Result) {\n errors.push('No result in response');\n } else if (!('resultType' in r1Result)) {\n errors.push(\n 'resultType field is missing from response. Servers MUST include resultType to indicate the type of the result.'\n );\n } else if (r1Result.resultType !== 'input_required') {\n errors.push(\n `Expected resultType \"input_required\", got \"${r1Result.resultType}\"`\n );\n }\n\n checks.push({\n id: 'sep-2322-result-type-included',\n name: 'ResultTypeIncluded',\n description:\n 'Server includes resultType field in InputRequiredResult response',\n status: errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: errors.length > 0 ? errors.join('; ') : undefined,\n specReferences: MRTR_SPEC_REFERENCES,\n details: { result: r1Result }\n });\n } catch (error) {\n checks.push({\n id: 'sep-2322-result-type-included',\n name: 'ResultTypeIncluded',\n description:\n 'Server includes resultType field in InputRequiredResult response',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: MRTR_SPEC_REFERENCES\n });\n }\n\n return checks;\n }\n}\n\n// ─── A11: Unsupported Methods ────────────────────────────────────────────────\n\nexport class InputRequiredResultUnsupportedMethodsScenario implements ClientScenario {\n name = 'input-required-result-unsupported-methods';\n readonly source = { introducedIn: DRAFT_PROTOCOL_VERSION } as const;\n specVersions: SpecVersion[] = [DRAFT_PROTOCOL_VERSION];\n description = `Test that server does NOT return InputRequiredResult on unsupported methods (SEP-2322).\n\nServers MUST NOT send InputRequiredResult responses on any client requests other than the supported ones (prompts/get, resources/read, tools/call, tasks/result).`;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n const errors: string[] = [];\n\n const unsupportedMethods = ['tools/list', 'prompts/list'];\n\n try {\n for (const method of unsupportedMethods) {\n const resp = await sendRpc(serverUrl, method, {});\n if (\n resp.result &&\n (resp.result as Record).resultType ===\n 'input_required'\n ) {\n errors.push(\n `${method} returned InputRequiredResult, but it is not a supported method for MRTR`\n );\n }\n }\n\n checks.push({\n id: 'sep-2322-not-on-unsupported-requests',\n name: 'NotOnUnsupportedRequests',\n description:\n 'Server does not return InputRequiredResult on unsupported methods',\n status: errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: errors.length > 0 ? errors.join('; ') : undefined,\n specReferences: MRTR_SPEC_REFERENCES\n });\n } catch (error) {\n checks.push({\n id: 'sep-2322-not-on-unsupported-requests',\n name: 'NotOnUnsupportedRequests',\n description:\n 'Server does not return InputRequiredResult on unsupported methods',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: MRTR_SPEC_REFERENCES\n });\n }\n\n return checks;\n }\n}\n\n// ─── A12: Tampered State Rejection ───────────────────────────────────────────\n\nexport class InputRequiredResultTamperedStateScenario implements ClientScenario {\n name = 'input-required-result-tampered-state';\n readonly source = { introducedIn: DRAFT_PROTOCOL_VERSION } as const;\n specVersions: SpecVersion[] = [DRAFT_PROTOCOL_VERSION];\n description = `Test that server rejects tampered requestState (SEP-2322).\n\n**Server Implementation Requirements:**\n\nImplement a tool named \\`test_input_required_result_tampered_state\\` (no arguments required).\n\n**Behavior (Round 1):** When called without inputResponses, return an InputRequiredResult with\nintegrity-protected requestState (e.g. HMAC-signed).\n\n**Behavior (Round 2 - tampered):** When called with a modified/tampered requestState, return a\nJSON-RPC error (code -32602 or similar) indicating integrity check failure.`;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n try {\n // Round 1: Get valid InputRequiredResult with signed requestState\n const r1 = await sendRpc(serverUrl, 'tools/call', {\n name: 'test_input_required_result_tampered_state',\n arguments: {}\n });\n\n const r1Result = r1.result;\n if (r1.error || !r1Result || !isInputRequiredResult(r1Result)) {\n checks.push({\n id: 'sep-2322-reject-tampered-state',\n name: 'RejectTamperedState',\n description: 'Server rejects tampered requestState with error',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage:\n 'Prerequisite failed: could not get initial InputRequiredResult with requestState',\n specReferences: MRTR_SPEC_REFERENCES\n });\n return checks;\n }\n\n if (!r1Result.requestState) {\n checks.push({\n id: 'sep-2322-reject-tampered-state',\n name: 'RejectTamperedState',\n description: 'Server rejects tampered requestState with error',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage:\n 'Server did not include requestState in InputRequiredResult',\n specReferences: MRTR_SPEC_REFERENCES\n });\n return checks;\n }\n\n // Round 2: Tamper with the requestState and retry\n const tamperedState = r1Result.requestState + '-TAMPERED';\n const inputKey = Object.keys(r1Result.inputRequests!)[0];\n const r2 = await sendRpc(serverUrl, 'tools/call', {\n name: 'test_input_required_result_tampered_state',\n arguments: {},\n inputResponses: {\n [inputKey]: mockElicitResponse({ ok: true })\n },\n requestState: tamperedState\n });\n\n const errors: string[] = [];\n\n if (!r2.error) {\n // The only acceptable response to tampered state is a JSON-RPC error.\n // Returning a complete result OR re-prompting (InputRequiredResult) both\n // indicate the server did not reject the tampered state.\n if (r2.result && isCompleteResult(r2.result)) {\n errors.push(\n 'Server accepted tampered requestState and returned complete result. ' +\n 'Servers MUST reject state that fails integrity verification.'\n );\n } else {\n errors.push(\n 'Server did not return a JSON-RPC error for tampered requestState. ' +\n 'Servers MUST reject state that fails integrity verification.'\n );\n }\n }\n\n checks.push({\n id: 'sep-2322-reject-tampered-state',\n name: 'RejectTamperedState',\n description: 'Server rejects tampered requestState with error',\n status: errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: errors.length > 0 ? errors.join('; ') : undefined,\n specReferences: MRTR_SPEC_REFERENCES,\n details: { tamperedResponse: r2.result ?? r2.error }\n });\n } catch (error) {\n checks.push({\n id: 'sep-2322-reject-tampered-state',\n name: 'RejectTamperedState',\n description: 'Server rejects tampered requestState with error',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: MRTR_SPEC_REFERENCES\n });\n }\n\n return checks;\n }\n}\n\n// ─── A13: Respect Client Capabilities ────────────────────────────────────────\n\nexport class InputRequiredResultCapabilityCheckScenario implements ClientScenario {\n name = 'input-required-result-capability-check';\n readonly source = { introducedIn: DRAFT_PROTOCOL_VERSION } as const;\n specVersions: SpecVersion[] = [DRAFT_PROTOCOL_VERSION];\n description = `Test that server only sends inputRequests for capabilities the client declared (SEP-2322).\n\n**Server Implementation Requirements:**\n\nImplement a tool named \\`test_input_required_result_capabilities\\` (no arguments required).\n\n**Behavior:** Read client capabilities from \\`_meta['io.modelcontextprotocol/clientCapabilities']\\`.\nOnly include inputRequests for methods the client supports. For example, if the client declares\n\\`sampling: {}\\` but NOT \\`elicitation\\`, only include \\`sampling/createMessage\\` inputRequests.`;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n try {\n // Send request with only sampling capability (no elicitation)\n const resp = await sendRpc(serverUrl, 'tools/call', {\n name: 'test_input_required_result_capabilities',\n arguments: {},\n _meta: {\n 'io.modelcontextprotocol/clientCapabilities': {\n sampling: {}\n // deliberately omitting elicitation\n }\n }\n });\n\n const result = resp.result;\n const errors: string[] = [];\n\n if (resp.error) {\n errors.push(`JSON-RPC error: ${resp.error.message}`);\n } else if (!result) {\n errors.push('No result in response');\n } else if (isInputRequiredResult(result) && result.inputRequests) {\n // Check that no elicitation requests are included (client didn't declare it)\n for (const [key, req] of Object.entries(result.inputRequests)) {\n if (req.method === 'elicitation/create') {\n errors.push(\n `Server included elicitation/create inputRequest (key: \"${key}\") ` +\n 'but client did not declare elicitation capability'\n );\n }\n }\n } else if (isCompleteResult(result)) {\n errors.push(\n 'Server returned complete result; expected InputRequiredResult with sampling-only inputRequests'\n );\n }\n\n checks.push({\n id: 'sep-2322-respect-client-capabilities',\n name: 'RespectClientCapabilities',\n description:\n 'Server only includes inputRequests for declared client capabilities',\n status: errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: errors.length > 0 ? errors.join('; ') : undefined,\n specReferences: MRTR_SPEC_REFERENCES,\n details: { result }\n });\n } catch (error) {\n checks.push({\n id: 'sep-2322-respect-client-capabilities',\n name: 'RespectClientCapabilities',\n description:\n 'Server only includes inputRequests for declared client capabilities',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: MRTR_SPEC_REFERENCES\n });\n }\n\n return checks;\n }\n}\n\n// ─── A14: Ignore Unexpected Params ───────────────────────────────────────────\n\nexport class InputRequiredResultIgnoreExtraParamsScenario implements ClientScenario {\n name = 'input-required-result-ignore-extra-params';\n readonly source = { introducedIn: DRAFT_PROTOCOL_VERSION } as const;\n specVersions: SpecVersion[] = [DRAFT_PROTOCOL_VERSION];\n description = `Test that server ignores unexpected extra parameters in InputResponses (SEP-2322).\n\n**Server Implementation Requirements:**\n\nUses the same tool as A1: \\`test_input_required_result_elicitation\\`.\n\nThis scenario sends correct inputResponses PLUS extra unrecognized keys. The server SHOULD ignore\nthe extra keys and complete normally.`;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n try {\n // Send retry with correct inputResponses + extra unknown keys\n const resp = await sendRpc(serverUrl, 'tools/call', {\n name: 'test_input_required_result_elicitation',\n arguments: {},\n inputResponses: {\n user_name: mockElicitResponse({ name: 'Alice' }),\n unknown_extra_key: { action: 'accept', content: { foo: 'bar' } },\n another_unexpected: { action: 'accept', content: { baz: 123 } }\n }\n });\n\n const result = resp.result;\n const errors: string[] = [];\n\n if (resp.error) {\n errors.push(\n `Server returned JSON-RPC error when extra params were included: ${resp.error.message}. ` +\n 'Servers SHOULD ignore unrecognized information.'\n );\n } else if (!result) {\n errors.push('No result in response');\n } else if (!isCompleteResult(result)) {\n errors.push(\n 'Server did not return complete result when valid inputResponses were provided alongside extra keys. ' +\n 'Servers SHOULD ignore information they do not recognize.'\n );\n }\n\n checks.push({\n id: 'sep-2322-ignore-unexpected-params',\n name: 'IgnoreUnexpectedParams',\n description: 'Server ignores extra unrecognized keys in inputResponses',\n status: errors.length === 0 ? 'SUCCESS' : 'WARNING',\n timestamp: new Date().toISOString(),\n errorMessage: errors.length > 0 ? errors.join('; ') : undefined,\n specReferences: MRTR_SPEC_REFERENCES,\n details: { result }\n });\n } catch (error) {\n checks.push({\n id: 'sep-2322-ignore-unexpected-params',\n name: 'IgnoreUnexpectedParams',\n description: 'Server ignores extra unrecognized keys in inputResponses',\n status: 'WARNING',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: MRTR_SPEC_REFERENCES\n });\n }\n\n return checks;\n }\n}\n\n// ─── A15: Validate InputResponses ────────────────────────────────────────────\n\nexport class InputRequiredResultValidateInputScenario implements ClientScenario {\n name = 'input-required-result-validate-input';\n readonly source = { introducedIn: DRAFT_PROTOCOL_VERSION } as const;\n specVersions: SpecVersion[] = [DRAFT_PROTOCOL_VERSION];\n description = `Test that server validates InputResponses and returns appropriate errors (SEP-2322).\n\n**Server Implementation Requirements:**\n\nUses the same tool as A1: \\`test_input_required_result_elicitation\\`.\n\nThis scenario sends completely invalid inputResponses structures. The server SHOULD validate them\nand return a JSON-RPC error or a new InputRequiredResult.`;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n try {\n // Send inputResponses with invalid structure (number instead of object for the response)\n const resp = await sendRpc(serverUrl, 'tools/call', {\n name: 'test_input_required_result_elicitation',\n arguments: {},\n inputResponses: {\n user_name: 12345 as unknown as Record\n }\n });\n\n const validateErrors: string[] = [];\n\n // Server should either error or re-request — NOT return a complete result\n // with the invalid data silently accepted\n if (!resp.error && resp.result && isCompleteResult(resp.result)) {\n validateErrors.push(\n 'Server accepted invalid inputResponses (number instead of object) and returned complete result. ' +\n 'Servers SHOULD validate InputResponses data.'\n );\n }\n\n checks.push({\n id: 'sep-2322-validate-input-responses',\n name: 'ValidateInputResponses',\n description: 'Server validates InputResponses structure',\n status: validateErrors.length === 0 ? 'SUCCESS' : 'WARNING',\n timestamp: new Date().toISOString(),\n errorMessage:\n validateErrors.length > 0 ? validateErrors.join('; ') : undefined,\n specReferences: MRTR_SPEC_REFERENCES,\n details: { result: resp.result, error: resp.error }\n });\n\n // Also test: send completely malformed inputResponses (null)\n const resp2 = await sendRpc(serverUrl, 'tools/call', {\n name: 'test_input_required_result_elicitation',\n arguments: {},\n inputResponses: null as unknown as Record\n });\n\n const protocolErrors: string[] = [];\n\n if (!resp2.error && resp2.result && isCompleteResult(resp2.result)) {\n protocolErrors.push(\n 'Server accepted null inputResponses and returned complete result. ' +\n 'Protocol errors SHOULD return a JSON-RPC error response.'\n );\n }\n\n checks.push({\n id: 'sep-2322-error-on-protocol-error',\n name: 'ErrorOnProtocolError',\n description:\n 'Server returns JSON-RPC error for protocol-level input errors',\n status: protocolErrors.length === 0 ? 'SUCCESS' : 'WARNING',\n timestamp: new Date().toISOString(),\n errorMessage:\n protocolErrors.length > 0 ? protocolErrors.join('; ') : undefined,\n specReferences: MRTR_SPEC_REFERENCES,\n details: { result: resp2.result, error: resp2.error }\n });\n } catch (error) {\n checks.push({\n id: 'sep-2322-validate-input-responses',\n name: 'ValidateInputResponses',\n description: 'Server validates InputResponses structure',\n status: 'WARNING',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: MRTR_SPEC_REFERENCES\n });\n }\n\n return checks;\n }\n}\n",[],[128,233,243,309],"121946db-05da-4ae0-85ea-2ca3041f7f40","http-standard-headers.ts","d7695966-ad13-11f1-b337-1607ee4eb77e",17,["D",1789043615501],"/**\n * HTTP Standard Headers server validation test scenarios (SEP-2243)\n *\n * Tests that servers properly validate the standard MCP request headers:\n * - Reject requests where Mcp-Method header doesn't match the body\n * - Reject requests where Mcp-Name header doesn't match the body\n * - Accept case variations of header names (case-insensitive)\n * - Reject case variations of header values (case-sensitive)\n * - Handle whitespace trimming per HTTP spec\n * - Validate Base64-encoded custom header values\n * - Return 400 Bad Request with error code -32001 (HeaderMismatch)\n *\n * This is a ClientScenario (connects to a server under test and validates\n * its behavior).\n */\n\nimport http from 'node:http';\nimport {\n ClientScenario,\n ConformanceCheck,\n DRAFT_PROTOCOL_VERSION\n} from '../../types.ts';\nimport { withRequestMeta, sendStatelessRequest } from './stateless-client.ts';\n\nconst SPEC_REFERENCE = {\n id: 'SEP-2243-Server-Validation',\n url: 'https://modelcontextprotocol.io/specification/draft/basic/transports#server-validation'\n};\n\nconst SPEC_REFERENCE_CASE = {\n id: 'SEP-2243-Case-Sensitivity',\n url: 'https://modelcontextprotocol.io/specification/draft/basic/transports#case-sensitivity'\n};\n\n// OWS handling is an RFC 9110 §5.5 MUST (\"a field parsing implementation MUST\n// exclude such whitespace prior to evaluating the field value\"), not a\n// SEP-2243 requirement. Kept as a check because a server stack that fails it\n// has a real HTTP-layer bug that will manifest as header-mismatch rejections.\nconst SPEC_REFERENCE_RFC9110_OWS = {\n id: 'RFC-9110-5.5-Field-Values',\n url: 'https://www.rfc-editor.org/rfc/rfc9110#section-5.5'\n};\n\nconst SPEC_REFERENCE_BASE64 = {\n id: 'SEP-2243-Value-Encoding',\n url: 'https://modelcontextprotocol.io/specification/draft/basic/transports#value-encoding'\n};\n\nconst SPEC_REFERENCE_CUSTOM = {\n id: 'SEP-2243-Custom-Headers',\n url: 'https://modelcontextprotocol.io/specification/draft/basic/transports#server-behavior-for-custom-headers'\n};\n\nconst HEADER_MISMATCH_ERROR_CODE = -32001;\n\n// Coarse, requirement-level check IDs (SEP-2243) for STANDARD-header\n// rejections. Every standard-header rejection case emits this same pair of IDs;\n// the per-case name/description carry the detail of which case was exercised,\n// matching the repo's \"same id, vary status/message\" convention.\nconst REJECT_STATUS_CHECK_ID = 'sep-2243-server-reject-invalid-headers';\nconst REJECT_ERROR_CODE_CHECK_ID = 'sep-2243-server-reject-error-code';\n\n// CUSTOM-header (Mcp-Param-*) rejections map to the param-validation\n// requirements instead. The -32001 error-code half of every custom-header\n// rejection is the \"reject with 400 + JSON-RPC error code -32001 if any\n// validation fails\" requirement.\nconst PARAM_REJECT_ERROR_CODE_CHECK_ID =\n 'sep-2243-server-reject-param-mismatch';\n\n/**\n * Every requirement-level check ID HttpCustomHeaderServerValidationScenario\n * can emit (SEP-2243). When the server under test exposes no x-mcp-header\n * tool the scenario cannot exercise these, but it still emits one SKIPPED row\n * per ID so the traceability manifest sees that a scenario exists for each\n * requirement (the manifest joins on emitted IDs regardless of status).\n */\nexport const CUSTOM_HEADER_SERVER_DECLARED_CHECK_IDS = [\n 'sep-2243-server-decode-base64',\n 'sep-2243-server-validate-param-match',\n 'sep-2243-server-reject-invalid-param-chars',\n 'sep-2243-server-reject-param-mismatch'\n] as const;\n\n/**\n * Helper to send a raw HTTP POST request with custom headers.\n * Uses Node.js http.request to preserve exact header casing and values,\n * avoiding normalization that fetch()/Headers may apply.\n */\nasync function sendRawRequest(\n serverUrl: string,\n body: object,\n headers: Record = {}\n): Promise<{ status: number; body: any; headers: http.IncomingHttpHeaders }> {\n const url = new URL(serverUrl);\n const bodyStr = JSON.stringify(body);\n\n return new Promise((resolve, reject) => {\n const req = http.request(\n {\n hostname: url.hostname,\n port: url.port,\n path: url.pathname,\n method: 'POST',\n headers: {\n 'Content-Type': 'application/json',\n Accept: 'application/json, text/event-stream',\n 'Content-Length': Buffer.byteLength(bodyStr),\n ...headers\n }\n },\n (res) => {\n res.setEncoding('utf8');\n let data = '';\n res.on('data', (chunk) => {\n data += chunk;\n });\n res.on('end', () => {\n let responseBody: any;\n const contentType = res.headers['content-type'];\n if (contentType?.includes('application/json')) {\n try {\n responseBody = JSON.parse(data);\n } catch {\n responseBody = data;\n }\n } else {\n responseBody = data;\n }\n resolve({\n status: res.statusCode || 0,\n body: responseBody,\n headers: res.headers\n });\n });\n }\n );\n\n req.on('error', reject);\n req.write(bodyStr);\n req.end();\n });\n}\n\n/**\n * Builds two checks for a rejection case: one for the HTTP 400 status, one for\n * the -32001 JSON-RPC error code. Per SEP-2243 §Server Validation, 400 is MUST\n * but -32001 is SHOULD for *standard* headers (and MUST for *custom* headers,\n * §Server Behavior for Custom Headers) — so a server returning 400 with a\n * different error code is compliant for standard headers and must not FAIL.\n *\n * The two emitted check IDs are supplied explicitly by the caller: standard-\n * header callers pass the coarse REJECT_STATUS_CHECK_ID/REJECT_ERROR_CODE_CHECK_ID\n * pair, while custom-header/Base64 callers pass the param-validation\n * requirement that case exercises plus PARAM_REJECT_ERROR_CODE_CHECK_ID. The\n * per-case `name`/`description` distinguish which rejection case was\n * exercised.\n */\nfunction createRejectionChecks(\n statusId: string,\n errorCodeId: string,\n name: string,\n description: string,\n response: { status: number; body: any },\n specRef: { id: string; url: string },\n details: Record,\n opts: { errorCodeSeverity: 'FAILURE' | 'WARNING' }\n): ConformanceCheck[] {\n const fullDetails = {\n ...details,\n responseStatus: response.status,\n responseBody: response.body\n };\n const ts = new Date().toISOString();\n\n const statusOk = response.status === 400;\n const codeOk = response.body?.error?.code === HEADER_MISMATCH_ERROR_CODE;\n\n return [\n {\n id: statusId,\n name,\n description,\n status: statusOk ? 'SUCCESS' : 'FAILURE',\n timestamp: ts,\n errorMessage: statusOk\n ? undefined\n : `Expected HTTP 400, got ${response.status}. Server MUST reject with 400 Bad Request.`,\n specReferences: [specRef],\n details: fullDetails\n },\n {\n id: errorCodeId,\n name: `${name}ErrorCode`,\n description: `${description} — uses JSON-RPC error code -32001 (HeaderMismatch)`,\n status: codeOk ? 'SUCCESS' : opts.errorCodeSeverity,\n timestamp: ts,\n errorMessage: codeOk\n ? undefined\n : `Expected JSON-RPC error code ${HEADER_MISMATCH_ERROR_CODE} (HeaderMismatch), got ${response.body?.error?.code ?? '(missing)'}.`,\n specReferences: [specRef],\n details: fullDetails\n }\n ];\n}\n\nfunction createAcceptanceCheck(\n id: string,\n name: string,\n description: string,\n response: { status: number; body: any },\n specRef: { id: string; url: string },\n details: Record\n): ConformanceCheck {\n const errors: string[] = [];\n if (response.status >= 400) {\n errors.push(\n `Expected successful response, got HTTP ${response.status}. Server MUST accept this request.`\n );\n }\n // A server can return HTTP 200 with a JSON-RPC error in the body. Without\n // this assertion that case would pass as \"accepted\".\n if (\n response.body &&\n typeof response.body === 'object' &&\n 'error' in response.body\n ) {\n errors.push(\n `Expected successful response, but body contains JSON-RPC error ${JSON.stringify(response.body.error)}.`\n );\n }\n return {\n id,\n name,\n description,\n status: errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: errors.length > 0 ? errors.join('; ') : undefined,\n specReferences: [specRef],\n details: {\n ...details,\n responseStatus: response.status,\n responseBody: response.body\n }\n };\n}\n\nexport class HttpHeaderValidationScenario implements ClientScenario {\n name = 'http-header-validation';\n readonly source = { introducedIn: DRAFT_PROTOCOL_VERSION } as const;\n description = `Test server validation of standard MCP request headers (SEP-2243).\n\n**Server Implementation Requirements:**\n\n**Endpoint**: Streamable HTTP\n\n**Requirements**:\n- Server MUST reject requests where Mcp-Method header doesn't match the body method\n- Server MUST reject requests where Mcp-Name header doesn't match the body params.name/uri\n- Server MUST accept header names case-insensitively\n- Server MUST reject case-mismatched header values (method values are case-sensitive)\n- Server MUST accept extra whitespace around header values (per HTTP spec)\n- Server MUST return HTTP 400 Bad Request for validation failures\n- Server MUST return JSON-RPC error with code -32001 (HeaderMismatch)`;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n try {\n // Discover the server's tools with a fully-conformant stateless request\n // (SEP-2575) — that wire protocol has no initialize handshake or sessions.\n const toolsResponse = await sendStatelessRequest(serverUrl, 'tools/list');\n if (!toolsResponse.body?.result) {\n // The server under test could not even answer a conformant tools/list:\n // report a single explicit setup failure instead of misleading\n // per-case results against a broken server.\n const rpcError = toolsResponse.body?.error;\n checks.push({\n id: 'sep-2243-server-standard-setup',\n name: 'HttpHeaderValidationSetup',\n description: 'Setup for header validation tests',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage:\n `tools/list discovery failed: HTTP ${toolsResponse.status}` +\n (rpcError\n ? `, JSON-RPC error ${rpcError.code}: ${rpcError.message}`\n : ', no result in response body'),\n specReferences: [SPEC_REFERENCE],\n details: { httpStatus: toolsResponse.status, error: rpcError }\n });\n return checks;\n }\n const toolsResult = toolsResponse.body.result as {\n tools?: Array<{ name: string; inputSchema?: unknown }>;\n };\n\n const baseHeaders: Record = {\n 'MCP-Protocol-Version': DRAFT_PROTOCOL_VERSION\n };\n\n let idCounter = 100;\n const nextId = () => idCounter++;\n\n // --- Header/Body Mismatch Tests ---\n\n await this.testCase(\n checks,\n serverUrl,\n baseHeaders,\n nextId,\n 'reject',\n REJECT_STATUS_CHECK_ID,\n 'ServerRejectsMismatchedMethodHeader',\n 'Server rejects requests where Mcp-Method header does not match body method',\n { jsonrpc: '2.0', id: 0, method: 'tools/list' },\n { 'Mcp-Method': 'prompts/list' },\n SPEC_REFERENCE,\n { requestBodyMethod: 'tools/list', mcpMethodHeader: 'prompts/list' }\n );\n\n await this.testCase(\n checks,\n serverUrl,\n baseHeaders,\n nextId,\n 'reject',\n REJECT_STATUS_CHECK_ID,\n 'ServerRejectsMissingMethodHeader',\n 'Server rejects requests with missing Mcp-Method header',\n { jsonrpc: '2.0', id: 0, method: 'tools/list' },\n {},\n SPEC_REFERENCE,\n { requestBodyMethod: 'tools/list', mcpMethodHeader: '(missing)' }\n );\n\n if (toolsResult.tools && toolsResult.tools.length > 0) {\n const toolName = toolsResult.tools[0].name;\n\n await this.testCase(\n checks,\n serverUrl,\n baseHeaders,\n nextId,\n 'reject',\n REJECT_STATUS_CHECK_ID,\n 'ServerRejectsMismatchedNameHeader',\n 'Server rejects tools/call where Mcp-Name does not match body params.name',\n {\n jsonrpc: '2.0',\n id: 0,\n method: 'tools/call',\n params: { name: toolName, arguments: {} }\n },\n { 'Mcp-Method': 'tools/call', 'Mcp-Name': 'wrong_tool_name' },\n SPEC_REFERENCE,\n { requestBodyName: toolName, mcpNameHeader: 'wrong_tool_name' }\n );\n\n // --- Whitespace Test ---\n\n await this.testCase(\n checks,\n serverUrl,\n baseHeaders,\n nextId,\n 'accept',\n 'sep-2243-server-accepts-whitespace-header-value',\n 'ServerAcceptsWhitespaceHeaderValue',\n 'Server MUST accept leading/trailing whitespace in Mcp-Name value (RFC 9110 §5.5: field parsing MUST exclude OWS before evaluating)',\n {\n jsonrpc: '2.0',\n id: 0,\n method: 'tools/call',\n params: { name: toolName, arguments: {} }\n },\n {\n 'Mcp-Method': 'tools/call',\n 'Mcp-Name': ` ${toolName} `\n },\n SPEC_REFERENCE_RFC9110_OWS,\n {\n headerValue: ` ${toolName} `,\n bodyValue: toolName,\n reason: 'HTTP spec requires trimming OWS around field values'\n }\n );\n\n // --- Missing Standard Header with Value in Body (Case 47) ---\n\n await this.testCase(\n checks,\n serverUrl,\n baseHeaders,\n nextId,\n 'reject',\n REJECT_STATUS_CHECK_ID,\n 'ServerRejectsMissingNameHeader',\n 'Server MUST reject tools/call with missing Mcp-Name header when body has params.name',\n {\n jsonrpc: '2.0',\n id: 0,\n method: 'tools/call',\n params: { name: toolName, arguments: {} }\n },\n { 'Mcp-Method': 'tools/call' },\n SPEC_REFERENCE,\n {\n requestBodyName: toolName,\n mcpNameHeader: '(missing)',\n reason:\n 'Standard header omitted but value present in body → MUST reject'\n }\n );\n }\n\n // --- Case Sensitivity Tests ---\n\n await this.testCase(\n checks,\n serverUrl,\n baseHeaders,\n nextId,\n 'accept',\n 'sep-2243-header-name-case-insensitive',\n 'ServerAcceptsLowercaseHeaderName',\n 'Server MUST accept lowercase header name (mcp-method)',\n { jsonrpc: '2.0', id: 0, method: 'tools/list' },\n { 'mcp-method': 'tools/list' },\n SPEC_REFERENCE_CASE,\n { headerNameUsed: 'mcp-method' }\n );\n\n await this.testCase(\n checks,\n serverUrl,\n baseHeaders,\n nextId,\n 'accept',\n 'sep-2243-header-name-case-insensitive',\n 'ServerAcceptsUppercaseHeaderName',\n 'Server MUST accept uppercase header name (MCP-METHOD)',\n { jsonrpc: '2.0', id: 0, method: 'tools/list' },\n { 'MCP-METHOD': 'tools/list' },\n SPEC_REFERENCE_CASE,\n { headerNameUsed: 'MCP-METHOD' }\n );\n\n await this.testCase(\n checks,\n serverUrl,\n baseHeaders,\n nextId,\n 'reject',\n REJECT_STATUS_CHECK_ID,\n 'ServerRejectsCaseMismatchValue',\n 'Server MUST reject uppercase method value (TOOLS/LIST) since values are case-sensitive',\n { jsonrpc: '2.0', id: 0, method: 'tools/list' },\n { 'Mcp-Method': 'TOOLS/LIST' },\n SPEC_REFERENCE_CASE,\n { headerValue: 'TOOLS/LIST', bodyValue: 'tools/list' }\n );\n } catch (error) {\n checks.push({\n id: 'sep-2243-server-standard-setup',\n name: 'HttpHeaderValidationSetup',\n description: 'Setup for header validation tests',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed to set up tests: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: [SPEC_REFERENCE]\n });\n }\n\n return checks;\n }\n\n private async testCase(\n checks: ConformanceCheck[],\n serverUrl: string,\n baseHeaders: Record,\n nextId: () => number,\n expectation: 'accept' | 'reject',\n checkId: string,\n checkName: string,\n description: string,\n body: any,\n extraHeaders: Record,\n specRef: { id: string; url: string },\n details: Record\n ): Promise {\n try {\n // Issue #311: every raw request carries the SEP-2575 _meta fields — the\n // header-validation cases only mangle headers, never the body metadata.\n const requestBody = {\n ...body,\n id: body.id === 0 ? nextId() : body.id,\n params: withRequestMeta(body.params)\n };\n const response = await sendRawRequest(serverUrl, requestBody, {\n ...baseHeaders,\n ...extraHeaders\n });\n if (expectation === 'reject') {\n // Standard-header rejection: 400 is MUST, -32001 is SHOULD. All\n // standard-header rejection cases collapse onto the coarse requirement\n // ids; checkId/checkName still distinguish the case via name/details.\n checks.push(\n ...createRejectionChecks(\n REJECT_STATUS_CHECK_ID,\n REJECT_ERROR_CODE_CHECK_ID,\n checkName,\n description,\n response,\n specRef,\n details,\n { errorCodeSeverity: 'WARNING' }\n )\n );\n } else {\n checks.push(\n createAcceptanceCheck(\n checkId,\n checkName,\n description,\n response,\n specRef,\n details\n )\n );\n }\n } catch (error) {\n checks.push({\n id: checkId,\n name: checkName,\n description,\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: [specRef]\n });\n }\n }\n}\n\nexport class HttpCustomHeaderServerValidationScenario implements ClientScenario {\n name = 'http-custom-header-server-validation';\n readonly source = { introducedIn: DRAFT_PROTOCOL_VERSION } as const;\n description = `Test server validation of custom Mcp-Param headers and Base64 encoding (SEP-2243).\n\n**Server Implementation Requirements:**\n\n**Endpoint**: Streamable HTTP with at least one tool using \\`x-mcp-header\\`\n\n**Requirements**:\n- Server MUST validate Base64-encoded header values\n- Server MUST reject requests with invalid Base64 padding or characters\n- Server MUST treat values without =?base64?...?= wrapper as literal\n- Server MUST reject requests where custom header is omitted but value is in body`;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n try {\n // Discover the server's tools with a fully-conformant stateless request\n // (SEP-2575) — that wire protocol has no initialize handshake or sessions.\n const toolsResponse = await sendStatelessRequest(serverUrl, 'tools/list');\n if (!toolsResponse.body?.result) {\n // The server under test could not even answer a conformant tools/list:\n // report a single explicit setup failure (and backfill the declared\n // checks, mirroring the catch path) instead of pretending the\n // requirements are not applicable to a broken server.\n const rpcError = toolsResponse.body?.error;\n checks.push({\n id: 'sep-2243-server-custom-setup',\n name: 'HttpCustomHeaderServerValidationSetup',\n description: 'Setup for custom header server validation tests',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage:\n `tools/list discovery failed: HTTP ${toolsResponse.status}` +\n (rpcError\n ? `, JSON-RPC error ${rpcError.code}: ${rpcError.message}`\n : ', no result in response body'),\n specReferences: [SPEC_REFERENCE_CUSTOM],\n details: { httpStatus: toolsResponse.status, error: rpcError }\n });\n this.failDeclaredChecks(checks);\n return checks;\n }\n const toolsResult = toolsResponse.body.result as {\n tools?: Array<{ name: string; inputSchema?: unknown }>;\n };\n\n // Find a tool with x-mcp-header annotations\n const xMcpTool = toolsResult.tools?.find((tool) => {\n const schema = tool.inputSchema as any;\n if (!schema?.properties) return false;\n return Object.values(schema.properties).some(\n (prop: any) => prop['x-mcp-header'] !== undefined\n );\n });\n\n if (!xMcpTool) {\n checks.push({\n id: 'sep-2243-server-no-xmcp-tool',\n name: 'HttpCustomHeaderServerNoTool',\n description:\n 'Server has no tools with x-mcp-header annotations to test',\n status: 'SKIPPED',\n timestamp: new Date().toISOString(),\n specReferences: [SPEC_REFERENCE_CUSTOM],\n details: {\n reason:\n 'No tools with x-mcp-header found. These tests require at least one tool with x-mcp-header annotations.'\n }\n });\n this.skipDeclaredChecks(\n checks,\n 'Server exposes no tool with x-mcp-header annotations.'\n );\n return checks;\n }\n\n const baseHeaders: Record = {\n 'MCP-Protocol-Version': DRAFT_PROTOCOL_VERSION\n };\n\n // Find the first x-mcp-header annotated STRING property\n // that is callable with minimal arguments to avoid schema validation failures\n const schema = xMcpTool.inputSchema as any;\n const annotatedEntry = Object.entries(schema.properties).find(\n ([, def]: [string, any]) =>\n def['x-mcp-header'] !== undefined && (def as any).type === 'string'\n );\n if (!annotatedEntry) {\n checks.push({\n id: 'sep-2243-server-no-string-param',\n name: 'HttpCustomHeaderServerNoStringParam',\n description:\n 'Server has no string-typed x-mcp-header parameter to test',\n status: 'SKIPPED',\n timestamp: new Date().toISOString(),\n specReferences: [SPEC_REFERENCE_CUSTOM]\n });\n this.skipDeclaredChecks(\n checks,\n 'Server exposes no string-typed x-mcp-header parameter.'\n );\n return checks;\n }\n const [paramName, paramDef] = annotatedEntry as [string, any];\n const headerSuffix = paramDef['x-mcp-header'];\n\n // Build default arguments for all required params to avoid schema validation errors.\n // These go in the JSON body, so number/boolean must be the real types —\n // sending '0' or 'false' as strings makes the server reject on JSON-schema\n // grounds and the header-validation checks below would false-pass on that 400.\n const requiredParams: string[] = schema.required || [];\n const defaultArgs: Record = {};\n const defaultHeaders: Record = {};\n for (const rp of requiredParams) {\n if (rp !== paramName) {\n const rpDef = schema.properties[rp];\n const rpType = rpDef?.type || 'string';\n if (rpType === 'number' || rpType === 'integer') {\n defaultArgs[rp] = 0;\n } else if (rpType === 'boolean') {\n defaultArgs[rp] = false;\n } else {\n defaultArgs[rp] = 'test-default';\n }\n // If this required param also has x-mcp-header, include its header too\n if (rpDef?.['x-mcp-header']) {\n defaultHeaders[`Mcp-Param-${rpDef['x-mcp-header']}`] = String(\n defaultArgs[rp]\n );\n }\n }\n }\n\n let idCounter = 200;\n const nextId = () => idCounter++;\n\n // --- Base64 Decoding Tests ---\n\n const validBase64Value = Buffer.from('Hello').toString('base64');\n\n // Valid Base64 - server decodes and validates\n await this.testBase64Case(\n checks,\n serverUrl,\n baseHeaders,\n nextId,\n 'accept',\n 'sep-2243-server-decode-base64',\n 'ServerAcceptsValidBase64',\n 'Server decodes valid Base64 header value and validates against body',\n xMcpTool.name,\n paramName,\n 'Hello',\n headerSuffix,\n `=?base64?${validBase64Value}?=`,\n defaultArgs,\n defaultHeaders\n );\n\n // Invalid Base64 padding — FAILURE per the SEP-2243 conformance-test-case\n // table, which is the approved source of truth for these cases. The spec\n // body says only \"MUST decode them accordingly\", but the table specifies\n // strict rejection. SDKs whose stdlib decoders are lenient (Node\n // Buffer.from, browser atob) will need to validate before decoding; if\n // that proves burdensome we'll revisit.\n await this.testBase64Case(\n checks,\n serverUrl,\n baseHeaders,\n nextId,\n 'reject',\n 'sep-2243-server-reject-invalid-param-chars',\n 'ServerRejectsInvalidBase64Padding',\n 'Server MUST reject Mcp-Param header with invalid Base64 padding (per SEP-2243 test-case table)',\n xMcpTool.name,\n paramName,\n 'Hello',\n headerSuffix,\n '=?base64?SGVsbG8?=',\n defaultArgs,\n defaultHeaders\n );\n\n // Invalid Base64 characters — FAILURE for the same reason as padding.\n await this.testBase64Case(\n checks,\n serverUrl,\n baseHeaders,\n nextId,\n 'reject',\n 'sep-2243-server-reject-invalid-param-chars',\n 'ServerRejectsInvalidBase64Chars',\n 'Server MUST reject Mcp-Param header with non-alphabet Base64 characters (per SEP-2243 test-case table)',\n xMcpTool.name,\n paramName,\n 'Hello',\n headerSuffix,\n '=?base64?SGVs!!!bG8=?=',\n defaultArgs,\n defaultHeaders\n );\n\n // Missing prefix - server treats as literal value\n await this.testBase64Case(\n checks,\n serverUrl,\n baseHeaders,\n nextId,\n 'accept',\n 'sep-2243-server-validate-param-match',\n 'ServerLiteralMissingBase64Prefix',\n 'Server treats value without =?base64? prefix as literal (not Base64)',\n xMcpTool.name,\n paramName,\n validBase64Value,\n headerSuffix,\n validBase64Value,\n defaultArgs,\n defaultHeaders\n );\n\n // Missing suffix - server treats as literal value\n await this.testBase64Case(\n checks,\n serverUrl,\n baseHeaders,\n nextId,\n 'accept',\n 'sep-2243-server-validate-param-match',\n 'ServerLiteralMissingBase64Suffix',\n 'Server treats value without ?= suffix as literal (not Base64)',\n xMcpTool.name,\n paramName,\n `=?base64?${validBase64Value}`,\n headerSuffix,\n `=?base64?${validBase64Value}`,\n defaultArgs,\n defaultHeaders\n );\n\n // --- Missing Custom Header with Value in Body ---\n\n await this.testMissingCustomHeader(\n checks,\n serverUrl,\n baseHeaders,\n nextId,\n xMcpTool.name,\n paramName,\n headerSuffix,\n defaultArgs,\n defaultHeaders\n );\n } catch (error) {\n checks.push({\n id: 'sep-2243-server-custom-setup',\n name: 'HttpCustomHeaderServerValidationSetup',\n description: 'Setup for custom header server validation tests',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: [SPEC_REFERENCE_CUSTOM]\n });\n }\n\n // Declared-but-unemitted -> FAILURE. Reached only when setup threw partway\n // through (the gate-out paths emit SKIPPED rows and the happy path emits\n // every declared ID).\n this.failDeclaredChecks(checks);\n\n return checks;\n }\n\n /**\n * Backfill every declared-but-unemitted check ID as FAILURE when setup\n * failed before the cases could run, keeping the emitted ID set stable.\n */\n private failDeclaredChecks(checks: ConformanceCheck[]): void {\n for (const id of CUSTOM_HEADER_SERVER_DECLARED_CHECK_IDS) {\n if (checks.some((c) => c.id === id)) continue;\n checks.push({\n id,\n name: 'NotObserved',\n description: `Declared check ${id} was never emitted`,\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage:\n 'Check was not observed: custom-header validation setup failed before this case ran.',\n specReferences: [SPEC_REFERENCE_CUSTOM]\n });\n }\n }\n\n /**\n * Emit one SKIPPED row per declared requirement check when the scenario\n * cannot run against this server (no x-mcp-header tool). The IDs must still\n * reach checks.json so the traceability manifest records that a scenario\n * exists for each requirement.\n */\n private skipDeclaredChecks(checks: ConformanceCheck[], reason: string): void {\n for (const id of CUSTOM_HEADER_SERVER_DECLARED_CHECK_IDS) {\n if (checks.some((c) => c.id === id)) continue;\n checks.push({\n id,\n name: 'NotApplicable',\n description: `Declared check ${id} is not testable against this server`,\n status: 'SKIPPED',\n timestamp: new Date().toISOString(),\n specReferences: [SPEC_REFERENCE_CUSTOM],\n details: { reason }\n });\n }\n }\n\n private async testBase64Case(\n checks: ConformanceCheck[],\n serverUrl: string,\n baseHeaders: Record,\n nextId: () => number,\n expectation: 'accept' | 'reject',\n checkId: string,\n checkName: string,\n description: string,\n toolName: string,\n paramName: string,\n bodyValue: string,\n headerSuffix: string,\n headerValue: string,\n defaultArgs: Record,\n defaultHeaders: Record\n ): Promise {\n try {\n const response = await sendRawRequest(\n serverUrl,\n {\n jsonrpc: '2.0',\n id: nextId(),\n method: 'tools/call',\n // Issue #311: the body always carries the SEP-2575 _meta fields —\n // these cases only vary the Mcp-Param header value.\n params: withRequestMeta({\n name: toolName,\n arguments: { ...defaultArgs, [paramName]: bodyValue }\n })\n },\n {\n ...baseHeaders,\n ...defaultHeaders,\n 'Mcp-Method': 'tools/call',\n 'Mcp-Name': toolName,\n [`Mcp-Param-${headerSuffix}`]: headerValue\n }\n );\n\n const details = {\n toolName,\n paramName,\n bodyValue,\n headerSuffix,\n headerValue\n };\n\n if (expectation === 'accept') {\n checks.push(\n createAcceptanceCheck(\n checkId,\n checkName,\n description,\n response,\n SPEC_REFERENCE_BASE64,\n details\n )\n );\n } else {\n // Custom-header rejection: both 400 and -32001 are MUST per\n // §Server Behavior for Custom Headers. The status half maps to the\n // param-validation requirement this case exercises (checkId); the\n // error-code half is the \"400 + -32001 if any validation fails\"\n // requirement.\n checks.push(\n ...createRejectionChecks(\n checkId,\n PARAM_REJECT_ERROR_CODE_CHECK_ID,\n checkName,\n description,\n response,\n SPEC_REFERENCE_BASE64,\n details,\n { errorCodeSeverity: 'FAILURE' }\n )\n );\n }\n } catch (error) {\n checks.push({\n id: checkId,\n name: checkName,\n description,\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: [SPEC_REFERENCE_BASE64]\n });\n }\n }\n\n private async testMissingCustomHeader(\n checks: ConformanceCheck[],\n serverUrl: string,\n baseHeaders: Record,\n nextId: () => number,\n toolName: string,\n paramName: string,\n headerSuffix: string,\n defaultArgs: Record,\n defaultHeaders: Record\n ): Promise {\n try {\n // Send tools/call with value in body but NO Mcp-Param header\n const response = await sendRawRequest(\n serverUrl,\n {\n jsonrpc: '2.0',\n id: nextId(),\n method: 'tools/call',\n // Issue #311: the body always carries the SEP-2575 _meta fields —\n // this case only omits the Mcp-Param header.\n params: withRequestMeta({\n name: toolName,\n arguments: { ...defaultArgs, [paramName]: 'test-value' }\n })\n },\n {\n ...baseHeaders,\n ...defaultHeaders,\n 'Mcp-Method': 'tools/call',\n 'Mcp-Name': toolName\n // Deliberately omit Mcp-Param-{headerSuffix} header\n }\n );\n\n // Custom-header rejection: both 400 and -32001 are MUST. A header\n // omitted while the body carries a value is a header/body mismatch, so\n // the status half maps to the validate-param-match requirement.\n checks.push(\n ...createRejectionChecks(\n 'sep-2243-server-validate-param-match',\n PARAM_REJECT_ERROR_CODE_CHECK_ID,\n 'ServerRejectsMissingCustomHeader',\n 'Server MUST reject request where custom header is omitted but value is present in body',\n response,\n SPEC_REFERENCE_CUSTOM,\n {\n toolName,\n paramName,\n bodyValue: 'test-value',\n expectedHeader: `Mcp-Param-${headerSuffix}`,\n mcpParamHeader: '(missing)'\n },\n { errorCodeSeverity: 'FAILURE' }\n )\n );\n } catch (error) {\n checks.push({\n id: 'sep-2243-server-validate-param-match',\n name: 'ServerRejectsMissingCustomHeader',\n description:\n 'Server MUST reject request where custom header is omitted but value is present in body',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: [SPEC_REFERENCE_CUSTOM]\n });\n }\n }\n}\n",[],[128,233,243,317],"919a496a-cc4d-4472-9626-2ef817567dbf","elicitation-enums.ts","d9d14c54-ad13-11f1-92d3-1607ee4eb77e",25,["D",1789043619544],"/**\n * SEP-1330: Elicitation enum schema improvements test scenarios for MCP servers\n */\n\nimport { ClientScenario, ConformanceCheck } from '../../types.ts';\nimport { connectToServer } from './client-helper.ts';\nimport { ElicitRequestSchema } from 'npm:@modelcontextprotocol/sdk@^1.29.0/types.js';\n\nexport class ElicitationEnumsScenario implements ClientScenario {\n name = 'elicitation-sep1330-enums';\n readonly source = { introducedIn: '2025-11-25' } as const;\n description = `Test elicitation with enum schema improvements (SEP-1330).\n\n**Server Implementation Requirements:**\n\nImplement a tool named \\`test_elicitation_sep1330_enums\\` (no arguments) that requests \\`elicitation/create\\` from the client with a schema containing all 5 enum variants:\n\n1. **Untitled single-select**: \\`{ type: \"string\", enum: [\"option1\", \"option2\", \"option3\"] }\\`\n2. **Titled single-select**: \\`{ type: \"string\", oneOf: [{ const: \"value1\", title: \"First Option\" }, ...] }\\`\n3. **Legacy titled (deprecated)**: \\`{ type: \"string\", enum: [\"opt1\", \"opt2\", \"opt3\"], enumNames: [\"Option One\", \"Option Two\", \"Option Three\"] }\\`\n4. **Untitled multi-select**: \\`{ type: \"array\", items: { type: \"string\", enum: [\"option1\", \"option2\", \"option3\"] } }\\`\n5. **Titled multi-select**: \\`{ type: \"array\", items: { anyOf: [{ const: \"value1\", title: \"First Choice\" }, ...] } }\\`\n\n**Returns**: Text content with the elicitation result\n\n\\`\\`\\`json\n{\n \"content\": [\n {\n \"type\": \"text\",\n \"text\": \"Elicitation completed: action=, content={...}\"\n }\n ]\n}\n\\`\\`\\``;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n try {\n const connection = await connectToServer(serverUrl);\n\n let capturedRequest: any = null;\n connection.client.setRequestHandler(\n ElicitRequestSchema,\n async (request) => {\n capturedRequest = request;\n // Return mock data for all enum types\n return {\n action: 'accept',\n content: {\n untitledSingle: 'option1',\n titledSingle: 'value1',\n legacyEnum: 'opt1',\n untitledMulti: ['option1', 'option2'],\n titledMulti: ['value1', 'value2']\n }\n };\n }\n );\n\n await connection.client.callTool({\n name: 'test_elicitation_sep1330_enums',\n arguments: {}\n });\n\n // Validate that elicitation was requested\n if (!capturedRequest) {\n checks.push({\n id: 'elicitation-sep1330-general',\n name: 'ElicitationSEP1330General',\n description: 'Server requests elicitation with enum schemas',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: 'Server did not request elicitation from client',\n specReferences: [\n {\n id: 'SEP-1330',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1330'\n }\n ]\n });\n await connection.close();\n return checks;\n }\n\n const schema = capturedRequest.params?.requestedSchema;\n const properties = schema?.properties;\n\n // Validate untitled single-select enum\n const untitledSingleErrors: string[] = [];\n if (!properties?.untitledSingle) {\n untitledSingleErrors.push(\n 'Missing untitled single-select enum field \"untitledSingle\"'\n );\n } else {\n if (properties.untitledSingle.type !== 'string') {\n untitledSingleErrors.push(\n `Expected type \"string\", got \"${properties.untitledSingle.type}\"`\n );\n }\n if (\n !properties.untitledSingle.enum ||\n !Array.isArray(properties.untitledSingle.enum)\n ) {\n untitledSingleErrors.push('Missing or invalid enum array');\n }\n if (properties.untitledSingle.oneOf) {\n untitledSingleErrors.push(\n 'Untitled enum should not have oneOf property'\n );\n }\n if (properties.untitledSingle.enumNames) {\n untitledSingleErrors.push(\n 'Untitled enum should not have enumNames property'\n );\n }\n }\n\n checks.push({\n id: 'elicitation-sep1330-untitled-single',\n name: 'ElicitationSEP1330UntitledSingle',\n description: 'Untitled single-select enum schema uses enum array',\n status: untitledSingleErrors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage:\n untitledSingleErrors.length > 0\n ? untitledSingleErrors.join('; ')\n : undefined,\n specReferences: [\n {\n id: 'SEP-1330',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1330'\n }\n ],\n details: {\n field: 'untitledSingle',\n schema: properties?.untitledSingle\n }\n });\n\n // Validate titled single-select enum (using oneOf with const/title)\n const titledSingleErrors: string[] = [];\n if (!properties?.titledSingle) {\n titledSingleErrors.push(\n 'Missing titled single-select enum field \"titledSingle\"'\n );\n } else {\n if (properties.titledSingle.type !== 'string') {\n titledSingleErrors.push(\n `Expected type \"string\", got \"${properties.titledSingle.type}\"`\n );\n }\n if (\n !properties.titledSingle.oneOf ||\n !Array.isArray(properties.titledSingle.oneOf)\n ) {\n titledSingleErrors.push(\n 'Missing or invalid oneOf array for titled enum'\n );\n } else {\n // Validate oneOf structure has const/title pairs\n const invalidItems = properties.titledSingle.oneOf.filter(\n (item: any) =>\n typeof item.const !== 'string' || typeof item.title !== 'string'\n );\n if (invalidItems.length > 0) {\n titledSingleErrors.push(\n `oneOf items must have \"const\" (string) and \"title\" (string) properties`\n );\n }\n }\n if (properties.titledSingle.enum) {\n titledSingleErrors.push(\n 'Titled enum should use oneOf instead of enum array'\n );\n }\n }\n\n checks.push({\n id: 'elicitation-sep1330-titled-single',\n name: 'ElicitationSEP1330TitledSingle',\n description:\n 'Titled single-select enum schema uses oneOf with const/title',\n status: titledSingleErrors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage:\n titledSingleErrors.length > 0\n ? titledSingleErrors.join('; ')\n : undefined,\n specReferences: [\n {\n id: 'SEP-1330',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1330'\n }\n ],\n details: {\n field: 'titledSingle',\n schema: properties?.titledSingle\n }\n });\n\n // Validate legacy titled enum (using enumNames - deprecated)\n const legacyEnumErrors: string[] = [];\n if (!properties?.legacyEnum) {\n legacyEnumErrors.push('Missing legacy titled enum field \"legacyEnum\"');\n } else {\n if (properties.legacyEnum.type !== 'string') {\n legacyEnumErrors.push(\n `Expected type \"string\", got \"${properties.legacyEnum.type}\"`\n );\n }\n if (\n !properties.legacyEnum.enum ||\n !Array.isArray(properties.legacyEnum.enum)\n ) {\n legacyEnumErrors.push('Missing or invalid enum array');\n }\n if (\n !properties.legacyEnum.enumNames ||\n !Array.isArray(properties.legacyEnum.enumNames)\n ) {\n legacyEnumErrors.push(\n 'Missing or invalid enumNames array for legacy titled enum'\n );\n } else if (\n properties.legacyEnum.enum &&\n properties.legacyEnum.enumNames.length !==\n properties.legacyEnum.enum.length\n ) {\n legacyEnumErrors.push(\n `enumNames length (${properties.legacyEnum.enumNames.length}) must match enum length (${properties.legacyEnum.enum.length})`\n );\n }\n }\n\n checks.push({\n id: 'elicitation-sep1330-legacy-enumnames',\n name: 'ElicitationSEP1330LegacyEnumNames',\n description: 'Legacy titled enum schema uses enumNames (deprecated)',\n status: legacyEnumErrors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage:\n legacyEnumErrors.length > 0 ? legacyEnumErrors.join('; ') : undefined,\n specReferences: [\n {\n id: 'SEP-1330',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1330'\n }\n ],\n details: {\n field: 'legacyEnum',\n schema: properties?.legacyEnum\n }\n });\n\n // Validate untitled multi-select enum\n const untitledMultiErrors: string[] = [];\n if (!properties?.untitledMulti) {\n untitledMultiErrors.push(\n 'Missing untitled multi-select enum field \"untitledMulti\"'\n );\n } else {\n if (properties.untitledMulti.type !== 'array') {\n untitledMultiErrors.push(\n `Expected type \"array\", got \"${properties.untitledMulti.type}\"`\n );\n }\n if (!properties.untitledMulti.items) {\n untitledMultiErrors.push('Missing items property for array type');\n } else {\n if (properties.untitledMulti.items.type !== 'string') {\n untitledMultiErrors.push(\n `Expected items.type \"string\", got \"${properties.untitledMulti.items.type}\"`\n );\n }\n if (\n !properties.untitledMulti.items.enum ||\n !Array.isArray(properties.untitledMulti.items.enum)\n ) {\n untitledMultiErrors.push('Missing or invalid items.enum array');\n }\n if (properties.untitledMulti.items.anyOf) {\n untitledMultiErrors.push(\n 'Untitled multi-select should use items.enum, not items.anyOf'\n );\n }\n }\n }\n\n checks.push({\n id: 'elicitation-sep1330-untitled-multi',\n name: 'ElicitationSEP1330UntitledMulti',\n description:\n 'Untitled multi-select enum schema uses array with items.enum',\n status: untitledMultiErrors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage:\n untitledMultiErrors.length > 0\n ? untitledMultiErrors.join('; ')\n : undefined,\n specReferences: [\n {\n id: 'SEP-1330',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1330'\n }\n ],\n details: {\n field: 'untitledMulti',\n schema: properties?.untitledMulti\n }\n });\n\n // Validate titled multi-select enum (using items.anyOf with const/title)\n const titledMultiErrors: string[] = [];\n if (!properties?.titledMulti) {\n titledMultiErrors.push(\n 'Missing titled multi-select enum field \"titledMulti\"'\n );\n } else {\n if (properties.titledMulti.type !== 'array') {\n titledMultiErrors.push(\n `Expected type \"array\", got \"${properties.titledMulti.type}\"`\n );\n }\n if (!properties.titledMulti.items) {\n titledMultiErrors.push('Missing items property for array type');\n } else {\n if (\n !properties.titledMulti.items.anyOf ||\n !Array.isArray(properties.titledMulti.items.anyOf)\n ) {\n titledMultiErrors.push(\n 'Missing or invalid items.anyOf array for titled multi-select'\n );\n } else {\n // Validate anyOf structure has const/title pairs\n const invalidItems = properties.titledMulti.items.anyOf.filter(\n (item: any) =>\n typeof item.const !== 'string' || typeof item.title !== 'string'\n );\n if (invalidItems.length > 0) {\n titledMultiErrors.push(\n `items.anyOf entries must have \"const\" (string) and \"title\" (string) properties`\n );\n }\n }\n if (properties.titledMulti.items.enum) {\n titledMultiErrors.push(\n 'Titled multi-select should use items.anyOf, not items.enum'\n );\n }\n }\n }\n\n checks.push({\n id: 'elicitation-sep1330-titled-multi',\n name: 'ElicitationSEP1330TitledMulti',\n description:\n 'Titled multi-select enum schema uses array with items.anyOf',\n status: titledMultiErrors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage:\n titledMultiErrors.length > 0\n ? titledMultiErrors.join('; ')\n : undefined,\n specReferences: [\n {\n id: 'SEP-1330',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1330'\n }\n ],\n details: {\n field: 'titledMulti',\n schema: properties?.titledMulti\n }\n });\n\n await connection.close();\n } catch (error) {\n checks.push({\n id: 'elicitation-sep1330-general',\n name: 'ElicitationSEP1330General',\n description: 'Server requests elicitation with enum schemas',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: [\n {\n id: 'SEP-1330',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1330'\n }\n ]\n });\n }\n\n return checks;\n }\n}\n",[],[128,233,243,325],"8f32f61c-b844-463c-be3a-02cb902e5cca","elicitation-defaults.ts","da902eb2-ad13-11f1-b34d-1607ee4eb77e",26,["D",1789043620789],"/**\n * SEP-1034: Elicitation default values test scenarios for MCP servers\n */\n\nimport { ClientScenario, ConformanceCheck } from '../../types.ts';\nimport { connectToServer } from './client-helper.ts';\nimport { ElicitRequestSchema } from 'npm:@modelcontextprotocol/sdk@^1.29.0/types.js';\n\nexport class ElicitationDefaultsScenario implements ClientScenario {\n name = 'elicitation-sep1034-defaults';\n readonly source = { introducedIn: '2025-11-25' } as const;\n description = `Test elicitation with default values for all primitive types (SEP-1034).\n\n**Server Implementation Requirements:**\n\nImplement a tool named \\`test_elicitation_sep1034_defaults\\` (no arguments) that requests \\`elicitation/create\\` from the client with a schema containing default values for all primitive types:\n- \\`name\\` (string): default \"John Doe\"\n- \\`age\\` (integer): default 30\n- \\`score\\` (number): default 95.5\n- \\`status\\` (string enum: [\"active\", \"inactive\", \"pending\"]): default \"active\"\n- \\`verified\\` (boolean): default true\n\n**Returns**: Text content with the elicitation result\n\n\\`\\`\\`json\n{\n \"content\": [\n {\n \"type\": \"text\",\n \"text\": \"Elicitation completed: action=, content={...}\"\n }\n ]\n}\n\\`\\`\\``;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n\n try {\n const connection = await connectToServer(serverUrl);\n\n let capturedRequest: any = null;\n connection.client.setRequestHandler(\n ElicitRequestSchema,\n async (request) => {\n capturedRequest = request;\n return {\n action: 'accept',\n content: {\n name: 'Jane Smith',\n age: 25,\n score: 88.0,\n status: 'inactive',\n verified: false\n }\n };\n }\n );\n\n await connection.client.callTool({\n name: 'test_elicitation_sep1034_defaults',\n arguments: {}\n });\n\n // Validate that elicitation was requested\n if (!capturedRequest) {\n checks.push({\n id: 'elicitation-sep1034-general',\n name: 'ElicitationSEP1034General',\n description: 'Server requests elicitation with default values',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: 'Server did not request elicitation from client',\n specReferences: [\n {\n id: 'SEP-1034',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1034'\n }\n ]\n });\n await connection.close();\n return checks;\n }\n\n const schema = capturedRequest.params?.requestedSchema;\n const properties = schema?.properties;\n\n // Validate string default\n const stringErrors: string[] = [];\n if (!properties?.name) {\n stringErrors.push('Missing string field \"name\"');\n } else {\n if (properties.name.type !== 'string') {\n stringErrors.push(\n `Expected type \"string\", got \"${properties.name.type}\"`\n );\n }\n if (!('default' in properties.name)) {\n stringErrors.push('Missing default field');\n } else if (properties.name.default !== 'John Doe') {\n stringErrors.push(\n `Expected default \"John Doe\", got \"${properties.name.default}\"`\n );\n }\n }\n\n checks.push({\n id: 'elicitation-sep1034-string-default',\n name: 'ElicitationSEP1034StringDefault',\n description: 'String schema includes default value',\n status: stringErrors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage:\n stringErrors.length > 0 ? stringErrors.join('; ') : undefined,\n specReferences: [\n {\n id: 'SEP-1034',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1034'\n }\n ],\n details: {\n field: 'name',\n schema: properties?.name\n }\n });\n\n // Validate integer default\n const integerErrors: string[] = [];\n if (!properties?.age) {\n integerErrors.push('Missing integer field \"age\"');\n } else {\n if (properties.age.type !== 'integer') {\n integerErrors.push(\n `Expected type \"integer\", got \"${properties.age.type}\"`\n );\n }\n if (!('default' in properties.age)) {\n integerErrors.push('Missing default field');\n } else if (properties.age.default !== 30) {\n integerErrors.push(\n `Expected default 30, got ${properties.age.default}`\n );\n }\n }\n\n checks.push({\n id: 'elicitation-sep1034-integer-default',\n name: 'ElicitationSEP1034IntegerDefault',\n description: 'Integer schema includes default value',\n status: integerErrors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage:\n integerErrors.length > 0 ? integerErrors.join('; ') : undefined,\n specReferences: [\n {\n id: 'SEP-1034',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1034'\n }\n ],\n details: {\n field: 'age',\n schema: properties?.age\n }\n });\n\n // Validate number default\n const numberErrors: string[] = [];\n if (!properties?.score) {\n numberErrors.push('Missing number field \"score\"');\n } else {\n if (properties.score.type !== 'number') {\n numberErrors.push(\n `Expected type \"number\", got \"${properties.score.type}\"`\n );\n }\n if (!('default' in properties.score)) {\n numberErrors.push('Missing default field');\n } else if (properties.score.default !== 95.5) {\n numberErrors.push(\n `Expected default 95.5, got ${properties.score.default}`\n );\n }\n }\n\n checks.push({\n id: 'elicitation-sep1034-number-default',\n name: 'ElicitationSEP1034NumberDefault',\n description: 'Number schema includes default value',\n status: numberErrors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage:\n numberErrors.length > 0 ? numberErrors.join('; ') : undefined,\n specReferences: [\n {\n id: 'SEP-1034',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1034'\n }\n ],\n details: {\n field: 'score',\n schema: properties?.score\n }\n });\n\n // Validate enum default\n const enumErrors: string[] = [];\n if (!properties?.status) {\n enumErrors.push('Missing enum field \"status\"');\n } else {\n if (properties.status.type !== 'string') {\n enumErrors.push(\n `Expected type \"string\", got \"${properties.status.type}\"`\n );\n }\n if (!properties.status.enum || !Array.isArray(properties.status.enum)) {\n enumErrors.push('Missing or invalid enum array');\n }\n if (!('default' in properties.status)) {\n enumErrors.push('Missing default field');\n } else {\n if (properties.status.default !== 'active') {\n enumErrors.push(\n `Expected default \"active\", got \"${properties.status.default}\"`\n );\n }\n if (\n properties.status.enum &&\n !properties.status.enum.includes(properties.status.default)\n ) {\n enumErrors.push(\n `Default value \"${properties.status.default}\" is not a valid enum member`\n );\n }\n }\n }\n\n checks.push({\n id: 'elicitation-sep1034-enum-default',\n name: 'ElicitationSEP1034EnumDefault',\n description: 'Enum schema includes valid default value',\n status: enumErrors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: enumErrors.length > 0 ? enumErrors.join('; ') : undefined,\n specReferences: [\n {\n id: 'SEP-1034',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1034'\n }\n ],\n details: {\n field: 'status',\n schema: properties?.status\n }\n });\n\n // Validate boolean default (regression test - already supported)\n const booleanErrors: string[] = [];\n if (!properties?.verified) {\n booleanErrors.push('Missing boolean field \"verified\"');\n } else {\n if (properties.verified.type !== 'boolean') {\n booleanErrors.push(\n `Expected type \"boolean\", got \"${properties.verified.type}\"`\n );\n }\n if (!('default' in properties.verified)) {\n booleanErrors.push('Missing default field');\n } else if (properties.verified.default !== true) {\n booleanErrors.push(\n `Expected default true, got ${properties.verified.default}`\n );\n }\n }\n\n checks.push({\n id: 'elicitation-sep1034-boolean-default',\n name: 'ElicitationSEP1034BooleanDefault',\n description: 'Boolean schema includes default value',\n status: booleanErrors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage:\n booleanErrors.length > 0 ? booleanErrors.join('; ') : undefined,\n specReferences: [\n {\n id: 'SEP-1034',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1034'\n }\n ],\n details: {\n field: 'verified',\n schema: properties?.verified\n }\n });\n\n await connection.close();\n } catch (error) {\n checks.push({\n id: 'elicitation-sep1034-general',\n name: 'ElicitationSEP1034General',\n description: 'Server requests elicitation with default values',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: [\n {\n id: 'SEP-1034',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1034'\n }\n ]\n });\n }\n\n return checks;\n }\n}\n",[],[128,233,243,333],"9c8c0edf-01b5-4288-bde8-2de1d59eee68","dns-rebinding.ts","d851ca7a-ad13-11f1-84e1-1607ee4eb77e",20,["D",1789043617025],"/**\n * DNS Rebinding Protection test scenarios for MCP servers\n *\n * Tests that localhost MCP servers properly validate Host or Origin headers\n * to prevent DNS rebinding attacks. See GHSA-w48q-cv73-mx4w for details.\n */\n\nimport { ClientScenario, ConformanceCheck } from '../../types.ts';\nimport { request } from 'npm:undici@^7.25.0';\n\nconst SPEC_REFERENCES = [\n {\n id: 'MCP-DNS-Rebinding-Protection',\n url: 'https://modelcontextprotocol.io/specification/2025-11-25/basic/security_best_practices#local-mcp-server-compromise'\n },\n {\n id: 'MCP-Transport-Security',\n url: 'https://modelcontextprotocol.io/specification/2025-11-25/basic/transports#security-warning'\n }\n];\n\n/**\n * Check if URL is a localhost URL\n */\nfunction isLocalhostUrl(serverUrl: string): boolean {\n const url = new URL(serverUrl);\n const hostname = url.hostname.toLowerCase();\n return (\n hostname === 'localhost' ||\n hostname === '127.0.0.1' ||\n hostname === '[::1]' ||\n hostname === '::1'\n );\n}\n\n/**\n * Get the host header value from a URL (hostname:port)\n */\nfunction getHostFromUrl(serverUrl: string): string {\n const url = new URL(serverUrl);\n return url.host; // includes port if present\n}\n\n/**\n * Send an MCP initialize request with custom Host and Origin headers.\n * Both headers are set to the same value so that servers checking either\n * Host or Origin will properly detect the rebinding attempt.\n */\nasync function sendRequestWithHostAndOrigin(\n serverUrl: string,\n hostOrOrigin: string\n): Promise<{ statusCode: number; body: unknown }> {\n const response = await request(serverUrl, {\n method: 'POST',\n headers: {\n 'Content-Type': 'application/json',\n Host: hostOrOrigin,\n Origin: `http://${hostOrOrigin}`,\n Accept: 'application/json, text/event-stream'\n },\n body: JSON.stringify({\n jsonrpc: '2.0',\n id: 1,\n method: 'initialize',\n params: {\n protocolVersion: '2025-11-25',\n capabilities: {},\n clientInfo: { name: 'conformance-dns-rebinding-test', version: '1.0.0' }\n }\n })\n });\n\n let body: unknown;\n try {\n body = await response.body.json();\n } catch {\n body = null;\n }\n\n return {\n statusCode: response.statusCode,\n body\n };\n}\n\nexport class DNSRebindingProtectionScenario implements ClientScenario {\n name = 'dns-rebinding-protection';\n readonly source = { introducedIn: '2025-11-25' } as const;\n description = `Test DNS rebinding protection for localhost servers.\n\n**Scope:** This test applies to localhost MCP servers running without HTTPS and without\nauthentication. These servers are vulnerable to DNS rebinding attacks where a malicious\nwebsite tricks a user's browser into making requests to the local server.\n\n**Attack scenario:**\n1. User visits malicious website (e.g., evil.com)\n2. evil.com's DNS is configured to resolve to 127.0.0.1\n3. Browser makes request to evil.com which actually goes to localhost\n4. Without Host/Origin header validation, the local MCP server processes the request\n\n**Requirements:**\n- Server **MUST** validate the Host or Origin header on incoming requests\n- Server **MUST** reject requests with non-localhost Host/Origin headers (HTTP 4xx)\n- Server **MUST** accept requests with valid localhost Host/Origin headers\n\n**Valid localhost values:** \\`localhost\\`, \\`127.0.0.1\\`, \\`[::1]\\` (with optional port)\n\n**Note:** This test requires a localhost server URL. Non-localhost URLs will fail.\n\nSee: https://github.com/modelcontextprotocol/typescript-sdk/security/advisories/GHSA-w48q-cv73-mx4w`;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n const timestamp = new Date().toISOString();\n\n // Common check properties\n const rejectedCheckBase = {\n id: 'localhost-host-rebinding-rejected',\n name: 'DNSRebindingRejected',\n description:\n 'Server rejects requests with non-localhost Host/Origin headers',\n timestamp,\n specReferences: SPEC_REFERENCES\n };\n\n const acceptedCheckBase = {\n id: 'localhost-host-valid-accepted',\n name: 'LocalhostHostAccepted',\n description:\n 'Server accepts requests with valid localhost Host/Origin headers',\n timestamp,\n specReferences: SPEC_REFERENCES\n };\n\n // First check: Is this a localhost URL?\n if (!isLocalhostUrl(serverUrl)) {\n const errorMessage =\n 'DNS rebinding tests require a localhost server URL (localhost, 127.0.0.1, or [::1])';\n const details = { serverUrl, reason: 'non-localhost-url' };\n\n checks.push({\n ...rejectedCheckBase,\n status: 'FAILURE',\n errorMessage,\n details\n });\n checks.push({\n ...acceptedCheckBase,\n status: 'FAILURE',\n errorMessage,\n details\n });\n return checks;\n }\n\n const validHost = getHostFromUrl(serverUrl);\n const attackerHost = 'evil.example.com';\n\n // Check 1: Invalid Host/Origin headers should be rejected with a 4xx error\n try {\n const response = await sendRequestWithHostAndOrigin(\n serverUrl,\n attackerHost\n );\n const isRejected =\n response.statusCode >= 400 && response.statusCode < 500;\n\n const details = {\n hostHeader: attackerHost,\n originHeader: `http://${attackerHost}`,\n statusCode: response.statusCode,\n body: response.body\n };\n\n if (isRejected) {\n checks.push({\n ...rejectedCheckBase,\n status: 'SUCCESS',\n details\n });\n } else {\n checks.push({\n ...rejectedCheckBase,\n status: 'FAILURE',\n errorMessage: `Expected HTTP 4xx for invalid Host/Origin headers, got ${response.statusCode}`,\n details\n });\n }\n } catch (error) {\n checks.push({\n ...rejectedCheckBase,\n status: 'FAILURE',\n errorMessage: `Request failed: ${error instanceof Error ? error.message : String(error)}`,\n details: {\n hostHeader: attackerHost,\n originHeader: `http://${attackerHost}`\n }\n });\n }\n\n // Check 2: Valid localhost Host/Origin headers should be accepted (2xx response)\n try {\n const response = await sendRequestWithHostAndOrigin(serverUrl, validHost);\n const isAccepted =\n response.statusCode >= 200 && response.statusCode < 300;\n\n const details = {\n hostHeader: validHost,\n originHeader: `http://${validHost}`,\n statusCode: response.statusCode,\n body: response.body\n };\n\n if (isAccepted) {\n checks.push({\n ...acceptedCheckBase,\n status: 'SUCCESS',\n details\n });\n } else {\n checks.push({\n ...acceptedCheckBase,\n status: 'FAILURE',\n errorMessage: `Expected HTTP 2xx for valid localhost Host/Origin headers, got ${response.statusCode}`,\n details\n });\n }\n } catch (error) {\n checks.push({\n ...acceptedCheckBase,\n status: 'FAILURE',\n errorMessage: `Request failed: ${error instanceof Error ? error.message : String(error)}`,\n details: { hostHeader: validHost, originHeader: `http://${validHost}` }\n });\n }\n\n return checks;\n }\n}\n",[],[128,233,243,341],"13b62142-d766-42a2-9631-ec896c9bdc67","caching.ts","d809883c-ad13-11f1-b01d-1607ee4eb77e",19,["D",1789043616540],"/**\n * Caching (SEP-2549) test scenario for MCP servers\n *\n * Tests that servers include ttlMs and cacheScope on cacheable results:\n * tools/list, prompts/list, resources/list, resources/templates/list, resources/read\n */\n\nimport {\n ClientScenario,\n ConformanceCheck,\n DRAFT_PROTOCOL_VERSION\n} from '../../types.ts';\nimport { sendStatelessRequest } from './stateless-client.ts';\n\nconst SPEC_REFS = [\n {\n id: 'MCP-Caching',\n url: 'https://modelcontextprotocol.io/specification/draft/server/utilities/caching'\n },\n {\n id: 'SEP-2549',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2549'\n }\n];\n\ninterface CachingFields {\n ttlMs: unknown;\n cacheScope: unknown;\n hasTtlMs: boolean;\n hasCacheScope: boolean;\n}\n\nfunction extractCachingFields(result: Record): CachingFields {\n const hasTtlMs = 'ttlMs' in result;\n const hasCacheScope = 'cacheScope' in result;\n return {\n ttlMs: hasTtlMs ? result.ttlMs : undefined,\n cacheScope: hasCacheScope ? result.cacheScope : undefined,\n hasTtlMs,\n hasCacheScope\n };\n}\n\nfunction buildPresenceCheck(\n id: string,\n name: string,\n endpoint: string,\n fields: CachingFields\n): ConformanceCheck {\n const errors: string[] = [];\n\n if (!fields.hasTtlMs) {\n errors.push(`${endpoint} response missing ttlMs`);\n }\n if (!fields.hasCacheScope) {\n errors.push(`${endpoint} response missing cacheScope`);\n }\n\n return {\n id,\n name,\n description: `${endpoint} response includes ttlMs and cacheScope caching hints`,\n status: errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: errors.length > 0 ? errors.join('; ') : undefined,\n specReferences: SPEC_REFS,\n details: {\n ttlMs: fields.ttlMs,\n cacheScope: fields.cacheScope,\n hasTtlMs: fields.hasTtlMs,\n hasCacheScope: fields.hasCacheScope\n }\n };\n}\n\nexport class CachingScenario implements ClientScenario {\n name = 'caching';\n readonly source = { introducedIn: DRAFT_PROTOCOL_VERSION } as const;\n description = `Test that servers include caching hints (ttlMs and cacheScope) on cacheable results (SEP-2549).\n\n**Server Implementation Requirements:**\n\nServers MUST include \\`ttlMs\\` (integer >= 0) and \\`cacheScope\\` (\"public\" or \"private\") on results from:\n- \\`tools/list\\`\n- \\`prompts/list\\`\n- \\`resources/list\\`\n- \\`resources/templates/list\\`\n- \\`resources/read\\``;\n\n async run(serverUrl: string): Promise {\n const checks: ConformanceCheck[] = [];\n const allFields: Array<{ endpoint: string; fields: CachingFields }> = [];\n\n // SEP-2549 only exists in the draft spec, so each cacheable endpoint is\n // queried over the stateless path (SEP-2575): protocolVersion DRAFT-2026-v1\n // plus the cross-cutting _meta and standard headers (issue #315).\n const queryEndpoint = async (\n checkId: string,\n checkName: string,\n endpoint: string,\n params?: Record\n ): Promise | undefined> => {\n const description = `${endpoint} response includes ttlMs and cacheScope caching hints`;\n try {\n const response = await sendStatelessRequest(\n serverUrl,\n endpoint,\n params\n );\n const result = response.body?.result;\n if (!result) {\n const error = response.body?.error;\n checks.push({\n id: checkId,\n name: checkName,\n description,\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: error\n ? `${endpoint} returned JSON-RPC error ${error.code}: ${error.message}`\n : `${endpoint} returned HTTP ${response.status} with no result`,\n specReferences: SPEC_REFS,\n details: { httpStatus: response.status, error }\n });\n return undefined;\n }\n const fields = extractCachingFields(result);\n allFields.push({ endpoint, fields });\n checks.push(buildPresenceCheck(checkId, checkName, endpoint, fields));\n return result;\n } catch (error) {\n checks.push({\n id: checkId,\n name: checkName,\n description,\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `${endpoint} request failed: ${error instanceof Error ? error.message : String(error)}`,\n specReferences: SPEC_REFS\n });\n return undefined;\n }\n };\n\n // 1. tools/list\n await queryEndpoint(\n 'sep-2549-tools-list-caching-hints',\n 'ToolsListCachingHints',\n 'tools/list'\n );\n\n // 2. prompts/list\n await queryEndpoint(\n 'sep-2549-prompts-list-caching-hints',\n 'PromptsListCachingHints',\n 'prompts/list'\n );\n\n // 3. resources/list\n const resourcesResult = await queryEndpoint(\n 'sep-2549-resources-list-caching-hints',\n 'ResourcesListCachingHints',\n 'resources/list'\n );\n\n // 4. resources/templates/list\n await queryEndpoint(\n 'sep-2549-resources-templates-list-caching-hints',\n 'ResourcesTemplatesListCachingHints',\n 'resources/templates/list'\n );\n\n // 5. resources/read — use first resource from resources/list\n const resources = resourcesResult?.resources as\n | Array<{ uri?: string }>\n | undefined;\n const firstResourceUri = resources?.[0]?.uri;\n if (firstResourceUri) {\n await queryEndpoint(\n 'sep-2549-resources-read-caching-hints',\n 'ResourcesReadCachingHints',\n 'resources/read',\n { uri: firstResourceUri }\n );\n } else {\n // Keep the emitted check-ID set stable even when there is nothing to\n // read (resources/list failed or the server exposes no resources).\n checks.push({\n id: 'sep-2549-resources-read-caching-hints',\n name: 'ResourcesReadCachingHints',\n description:\n 'resources/read response includes ttlMs and cacheScope caching hints',\n status: 'SKIPPED',\n timestamp: new Date().toISOString(),\n errorMessage:\n 'resources/read was not exercised: resources/list failed or returned no resources.',\n specReferences: SPEC_REFS\n });\n }\n\n // 6. Aggregate: ttlMs must be a non-negative integer\n const ttlErrors: string[] = [];\n const endpointsWithTtl = allFields.filter((f) => f.fields.hasTtlMs);\n if (endpointsWithTtl.length === 0) {\n ttlErrors.push('no endpoints returned ttlMs');\n } else {\n for (const { endpoint, fields } of endpointsWithTtl) {\n const val = fields.ttlMs;\n if (typeof val !== 'number') {\n ttlErrors.push(\n `${endpoint}: ttlMs is ${typeof val}, expected number`\n );\n } else if (!Number.isInteger(val)) {\n ttlErrors.push(`${endpoint}: ttlMs is ${val}, expected integer`);\n } else if (val < 0) {\n ttlErrors.push(`${endpoint}: ttlMs is ${val}, must be >= 0`);\n }\n }\n }\n\n checks.push({\n id: 'sep-2549-ttl-non-negative',\n name: 'TtlNonNegative',\n description: 'All ttlMs values are non-negative integers',\n status: ttlErrors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: ttlErrors.length > 0 ? ttlErrors.join('; ') : undefined,\n specReferences: SPEC_REFS,\n details: {\n endpoints: allFields.map((f) => ({\n endpoint: f.endpoint,\n ttlMs: f.fields.ttlMs\n }))\n }\n });\n\n // 7. Aggregate: cacheScope must be \"public\" or \"private\"\n const scopeErrors: string[] = [];\n const endpointsWithScope = allFields.filter((f) => f.fields.hasCacheScope);\n if (endpointsWithScope.length === 0) {\n scopeErrors.push('no endpoints returned cacheScope');\n } else {\n for (const { endpoint, fields } of endpointsWithScope) {\n const val = fields.cacheScope;\n if (val !== 'public' && val !== 'private') {\n scopeErrors.push(\n `${endpoint}: cacheScope is ${JSON.stringify(val)}, expected \"public\" or \"private\"`\n );\n }\n }\n }\n\n checks.push({\n id: 'sep-2549-cache-scope-valid',\n name: 'CacheScopeValid',\n description: 'All cacheScope values are \"public\" or \"private\"',\n status: scopeErrors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: scopeErrors.length > 0 ? scopeErrors.join('; ') : undefined,\n specReferences: SPEC_REFS,\n details: {\n endpoints: allFields.map((f) => ({\n endpoint: f.endpoint,\n cacheScope: f.fields.cacheScope\n }))\n }\n });\n\n return checks;\n }\n}\n",[],[128,233,243,349],"50afa1bb-c0d3-4355-ad76-1a75f1bc84c7",["D",1789043615501],[183,184,185,186,187,188,189,190,191,192,193,194,195,196,197],[128,233,243],"4d56433d-acc8-4718-87a3-0b9a234b8e8c","10de8c75-8bc0-4b41-a330-aa6a631a25cf",["D",1789043627441],[],[128,233,365,32],"client","43a9c845-96f6-4a1a-b274-8d294e266a2c","stateless-gauntlet.ts","de3715f8-ad13-11f1-8258-1607ee4eb77e",37,["D",1789043626913],"/**\n * Stateless conformance gauntlet — one MCP server, many validating tools.\n *\n * Unlike the per-aspect scenarios, this is a single stateless server a client\n * connects to once. Every tool validates some aspect of the request that\n * carried it; transport-level obligations (Accept header, content type,\n * MCP-Protocol-Version) are validated on every POST before dispatch. The\n * conformance contract is self-evident:\n *\n * list tools, call each one with valid arguments — if nothing errors,\n * the client passed everything this server can observe per-request.\n *\n * There is intentionally NO cross-request state: each request is judged on\n * its own content, so the server can run on serverless hosts (val.town)\n * where consecutive requests may land on different isolates, and no run-id\n * or results polling is needed. Checks are still recorded for the runner /\n * hosted results view, but a misbehaving client finds out immediately\n * because its own request fails with an explanation.\n */\n\nimport { Server } from 'npm:@modelcontextprotocol/sdk@^1.29.0/server/index.js';\nimport { StreamableHTTPServerTransport } from 'npm:@modelcontextprotocol/sdk@^1.29.0/server/streamableHttp.js';\nimport {\n CallToolRequestSchema,\n CallToolResult,\n ListToolsRequestSchema\n} from 'npm:@modelcontextprotocol/sdk@^1.29.0/types.js';\nimport express, { Request, Response } from 'npm:express@^5.1.0';\nimport { createHash } from 'node:crypto';\nimport type { ConformanceCheck } from '../../types.ts';\nimport { HandlerScenario, DRAFT_PROTOCOL_VERSION } from '../../types.ts';\n\nconst SPEC_HTTP = {\n id: 'MCP-Streamable-HTTP',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/basic/transports#streamable-http'\n};\nconst SPEC_TOOLS = {\n id: 'MCP-Tools',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/server/tools#calling-tools'\n};\n\n/**\n * The draft wire string and its planned release date are treated as the same\n * version: clients built against the dated release string must pass against\n * a server that predates the rename (and vice versa).\n */\nconst DRAFT_VERSION_ALIASES = [DRAFT_PROTOCOL_VERSION, '2026-07-28'];\n\nconst CLASSIC_PROTOCOL_VERSIONS = ['2025-03-26', '2025-06-18', '2025-11-25'];\n\nconst KNOWN_PROTOCOL_VERSIONS = [\n ...CLASSIC_PROTOCOL_VERSIONS,\n ...DRAFT_VERSION_ALIASES\n];\n\nfunction isDraftVersion(v: unknown): boolean {\n return DRAFT_VERSION_ALIASES.includes(String(v));\n}\n\n/** Versions compare equal across the draft/release-date alias. */\nfunction sameVersion(a: unknown, b: unknown): boolean {\n return String(a) === String(b) || (isDraftVersion(a) && isDraftVersion(b));\n}\n\nconst META_NS = 'io.modelcontextprotocol/';\n\n/**\n * The bearer token minted by the consent interstitial. The token IS the\n * message: every subsequent request from the consented client carries\n * `Authorization: Bearer this-client-led-with-initialize`, so request logs,\n * proxies, and the readiness report can all state the fact directly.\n */\nconst CONSENT_TOKEN = 'this-client-led-with-initialize';\n\n/** What clients see in serverInfo — one val, one spec version. */\nconst SERVER_INFO = { name: 'mcp-checker-2026-07-28', version: '1.0.0' };\n\n// ---------------------------------------------------------------------------\n// MRTR (SEP-2322) — multi-round-trip tool, draft mode only.\n//\n// Listed only for clients whose per-request `_meta` clientCapabilities\n// declare elicitation support: a client that can't answer elicitation\n// requests simply never sees the tool, so \"call every listed tool\" stays the\n// whole contract. The requestState is self-contained (no server memory), so\n// the retry can land on any isolate.\n// ---------------------------------------------------------------------------\n\nconst MRTR_TOOL = {\n name: 'mrtr_confirm',\n description:\n 'Multi-round-trip tool (SEP-2322): the first call returns an ' +\n 'input_required result with an elicitation request and a requestState. ' +\n 'Re-call this tool with inputResponses.confirm set to the elicitation ' +\n 'result and requestState echoed back unchanged.',\n inputSchema: { type: 'object', properties: {} }\n};\n\n/**\n * Listed in place of mrtr_confirm when the client does NOT declare the\n * elicitation capability — so the absence is discoverable instead of silent.\n * Calling it is not an error (not implementing elicitation is conformant);\n * the result explains what declaring the capability unlocks.\n */\nconst ELICITATION_MISSING_TOOL = {\n name: 'elicitation_missing',\n description:\n 'You are seeing this tool because your client did not declare the ' +\n \"'elicitation' capability in _meta \" +\n `${META_NS}clientCapabilities. Clients that declare it ` +\n '({\"elicitation\": {}}) see the full tool list, including the ' +\n 'multi-round-trip (MRTR, SEP-2322) tool mrtr_confirm. Calling this ' +\n 'tool is not an error — it returns this explanation.',\n inputSchema: { type: 'object', properties: {} }\n};\n\nfunction declaresElicitation(meta: Record): boolean {\n const caps = meta[`${META_NS}clientCapabilities`];\n return (\n typeof caps === 'object' &&\n caps !== null &&\n (caps as Record).elicitation !== undefined\n );\n}\n\nfunction encodeMrtrState(): string {\n return Buffer.from(\n JSON.stringify({ tool: MRTR_TOOL.name, nonce: 'gauntlet-mrtr-v1' })\n ).toString('base64url');\n}\n\nfunction decodeMrtrState(state: string): boolean {\n try {\n const parsed = JSON.parse(Buffer.from(state, 'base64url').toString());\n return (\n parsed.tool === MRTR_TOOL.name && parsed.nonce === 'gauntlet-mrtr-v1'\n );\n } catch {\n return false;\n }\n}\n\ninterface ToolOutcome {\n ok: boolean;\n /** What was validated (on success) or what the client got wrong. */\n detail: string;\n}\n\n/**\n * Tool registry. Transport conformance (headers, _meta, version) is enforced\n * on every request before any tool runs, so tools only need to cover what a\n * request body can get wrong: constructing arguments that honor the\n * inputSchema. One tool with a string, a number, and a same-document $ref\n * field covers every argument kind in a single call; failures itemize\n * per-field problems so nothing diagnostic is lost by the consolidation.\n */\nconst GAUNTLET_TOOLS: {\n name: string;\n description: string;\n inputSchema: Record;\n validate: (args: Record, req: Request) => ToolOutcome;\n}[] = [\n {\n name: 'validate_arguments',\n description:\n 'Echoes back its arguments. Validates that the client constructs ' +\n 'arguments honoring the inputSchema: a required string, a required ' +\n 'JSON number (not a stringified number), and a field defined via a ' +\n 'same-document $ref (#/$defs/payload) — local refs are safe to ' +\n 'resolve (SEP-2106). Failures list every non-conforming field.',\n inputSchema: {\n type: 'object',\n properties: {\n message: { type: 'string', description: 'Any string to echo' },\n count: { type: 'number', description: 'Any JSON number' },\n payload: { $ref: '#/$defs/payload' }\n },\n required: ['message', 'count', 'payload'],\n $defs: {\n payload: {\n type: 'object',\n properties: { kind: { type: 'string', enum: ['solid', 'liquid'] } },\n required: ['kind']\n }\n }\n },\n validate: (args) => {\n const problems: string[] = [];\n if (typeof args.message !== 'string') {\n problems.push(\n `'message' must be a string; got ${JSON.stringify(args.message)} (${typeof args.message})`\n );\n }\n if (typeof args.count !== 'number') {\n problems.push(\n `'count' must be a JSON number, not a stringified number; got ${JSON.stringify(args.count)} (${typeof args.count})`\n );\n }\n const payload = args.payload as { kind?: unknown } | undefined;\n if (\n !payload ||\n typeof payload !== 'object' ||\n (payload.kind !== 'solid' && payload.kind !== 'liquid')\n ) {\n problems.push(\n `'payload' must match #/$defs/payload ({kind: \"solid\"|\"liquid\"}); got ${JSON.stringify(args.payload)}`\n );\n }\n if (problems.length > 0) {\n return { ok: false, detail: problems.join('; ') };\n }\n return {\n ok: true,\n detail: `message=${args.message}, count=${String(args.count)}, payload.kind=${String(payload?.kind)}`\n };\n }\n }\n];\n\n/** Transport-level problems with the request, empty when conformant. */\nfunction headerProblems(req: Request): string[] {\n const problems: string[] = [];\n const accept = String(req.headers.accept ?? '');\n if (\n !accept.includes('application/json') ||\n !accept.includes('text/event-stream')\n ) {\n problems.push(\n `Accept header MUST list both application/json and text/event-stream; got '${accept || '(missing)'}'`\n );\n }\n const contentType = String(req.headers['content-type'] ?? '');\n if (!contentType.includes('application/json')) {\n problems.push(\n `Content-Type MUST be application/json; got '${contentType || '(missing)'}'`\n );\n }\n return problems;\n}\n\n/**\n * Draft-2026 (SEP-2575/SEP-2243) per-request obligations. There is no\n * initialization in the stateless draft protocol, so everything a classic\n * handshake established must be carried by every request: the version header,\n * the io.modelcontextprotocol/* `_meta` fields, and the Mcp-Method/Mcp-Name\n * routing headers.\n */\nfunction draftProblems(\n req: Request,\n body: { method?: string; params?: Record }\n): string[] {\n const problems: string[] = [];\n const headerVersion = req.headers['mcp-protocol-version'];\n const meta = (body.params?._meta ?? {}) as Record;\n const metaVersion = meta[`${META_NS}protocolVersion`];\n\n if (!headerVersion) {\n problems.push(\n 'MCP-Protocol-Version header MUST be sent on every request (SEP-2575; there is no initialize handshake to negotiate it)'\n );\n } else if (!KNOWN_PROTOCOL_VERSIONS.includes(String(headerVersion))) {\n problems.push(\n `MCP-Protocol-Version '${String(headerVersion)}' is not a known protocol version (${KNOWN_PROTOCOL_VERSIONS.join(', ')})`\n );\n }\n for (const field of ['protocolVersion', 'clientInfo', 'clientCapabilities']) {\n if (meta[`${META_NS}${field}`] === undefined) {\n problems.push(\n `_meta MUST carry ${META_NS}${field} on every request (SEP-2575)`\n );\n }\n }\n if (\n headerVersion !== undefined &&\n metaVersion !== undefined &&\n !sameVersion(headerVersion, metaVersion)\n ) {\n problems.push(\n `MCP-Protocol-Version header ('${String(headerVersion)}') MUST match _meta ${META_NS}protocolVersion ('${String(metaVersion)}')`\n );\n }\n const mcpMethod = req.headers['mcp-method'];\n if (!mcpMethod) {\n problems.push(\n 'Mcp-Method header MUST mirror the JSON-RPC method on every POST (SEP-2243)'\n );\n } else if (body.method && String(mcpMethod) !== body.method) {\n problems.push(\n `Mcp-Method header ('${String(mcpMethod)}') MUST equal the body method ('${body.method}') (SEP-2243)`\n );\n }\n if (body.method === 'tools/call') {\n const mcpName = req.headers['mcp-name'];\n const toolName = (body.params as { name?: string } | undefined)?.name;\n if (!mcpName) {\n problems.push(\n 'Mcp-Name header MUST mirror params.name on tools/call (SEP-2243)'\n );\n } else if (toolName && String(mcpName) !== toolName) {\n problems.push(\n `Mcp-Name header ('${String(mcpName)}') MUST equal params.name ('${toolName}') (SEP-2243)`\n );\n }\n }\n return problems;\n}\n\nfunction check(\n checks: ConformanceCheck[],\n id: string,\n name: string,\n ok: boolean,\n description: string,\n details?: Record,\n failStatus: 'FAILURE' | 'WARNING' = 'FAILURE'\n): void {\n checks.push({\n id,\n name,\n description,\n status: ok ? 'SUCCESS' : failStatus,\n timestamp: new Date().toISOString(),\n specReferences: [SPEC_HTTP],\n details\n });\n}\n\ninterface ToolCallResult {\n content: { type: 'text'; text: string }[];\n isError?: boolean;\n [key: string]: unknown;\n}\n\n/**\n * Execute a gauntlet tool call. In lenient mode failures stay isError tool\n * results (recorded as WARNING checks) instead of escalating to HTTP 400 —\n * an old client keeps its flow and reads the feedback from the result.\n */\nfunction runTool(\n checks: ConformanceCheck[],\n name: string,\n args: Record,\n req: Request,\n lenient = false\n): ToolCallResult {\n const tool = GAUNTLET_TOOLS.find((t) => t.name === name);\n if (!tool) {\n return {\n content: [\n {\n type: 'text',\n text:\n `CONFORMANCE FAIL: unknown tool '${name}'. ` +\n `Available: ${GAUNTLET_TOOLS.map((t) => t.name).join(', ')}`\n }\n ],\n isError: true\n };\n }\n const outcome = tool.validate(args, req);\n check(\n checks,\n `gauntlet-${tool.name}`,\n `Gauntlet: ${tool.name}`,\n outcome.ok,\n outcome.ok\n ? `Client called ${tool.name} conformantly`\n : `Client call to ${tool.name} was not conformant`,\n { detail: outcome.detail },\n lenient ? 'WARNING' : 'FAILURE'\n );\n if (!outcome.ok) {\n return {\n content: [\n {\n type: 'text',\n text: `CONFORMANCE FAIL [${tool.name}]: ${outcome.detail}`\n }\n ],\n isError: true\n };\n }\n return {\n content: [\n { type: 'text', text: `CONFORMANCE OK [${tool.name}]: ${outcome.detail}` }\n ]\n };\n}\n\n// ---------------------------------------------------------------------------\n// Lenient mode (\"/lenient\" sub-path) — serve old clients, report the gaps.\n//\n// Classic flows complete normally (initialize handshake via the SDK) so an\n// old client can actually run; the draft gap report is delivered where the\n// client will see it: the initialize result's `instructions`, and the\n// draft_readiness tool whose result itemizes what the request that carried\n// it was missing relative to the stateless draft.\n// ---------------------------------------------------------------------------\n\nconst DRAFT_READINESS_TOOL = {\n name: 'draft_readiness',\n description:\n 'Reports how draft-ready (stateless 2026-07-28, SEP-2575) your client ' +\n 'is, judged from the request that carries this call: protocol version ' +\n 'declaration, _meta fields, and Mcp-* routing headers. Never errors — ' +\n 'the result is the report.',\n inputSchema: { type: 'object', properties: {} }\n};\n\n/**\n * Behavioral changes the draft brings that a per-request gap list cannot\n * detect — appended to every readiness report so old clients learn about\n * them even though their requests can't \"miss\" them yet.\n */\nconst MRTR_NOTE =\n 'Also note: the stateless draft replaces server-initiated requests with ' +\n 'multi-round-trip tool results (MRTR, SEP-2322). If your client supports ' +\n 'elicitation, it must declare it in _meta ' +\n `${META_NS}clientCapabilities ({\"elicitation\": {}}) and handle ` +\n \"resultType:'input_required' tool results — answer the inputRequests and \" +\n 'retry the call with requestState echoed back unchanged. Declaring the ' +\n 'capability makes this gauntlet list the mrtr_confirm tool so you can ' +\n 'exercise that flow.';\n\n/** Itemized draft gaps of one request, framed as an advisory report. */\nfunction readinessReport(\n req: Request,\n body: { method?: string; params?: Record }\n): string {\n const headerVersion = req.headers['mcp-protocol-version'];\n const meta = (body.params?._meta ?? {}) as Record;\n const gaps = draftProblems(req, body);\n // The consent token spells it out: this client led with initialize.\n if (req.headers.authorization === `Bearer ${CONSENT_TOKEN}`) {\n gaps.unshift(\n 'Do not lead with initialize — the stateless draft has no handshake. ' +\n 'This client presented the consent token (literally ' +\n `'${CONSENT_TOKEN}') minted at the initialize gate, so it opened ` +\n 'this session with initialize. Draft clients start with ' +\n 'server/discover or any request directly.'\n );\n } else if (body.method === 'initialize') {\n gaps.unshift(\n 'Do not lead with initialize — the stateless draft has no handshake. ' +\n 'This request IS an initialize. Draft clients start with ' +\n 'server/discover or any request directly.'\n );\n }\n if (gaps.length === 0) {\n return (\n 'DRAFT-READY: this request carries everything the stateless draft ' +\n 'protocol requires. Run the strict gauntlet at the parent URL ' +\n '(without /lenient) to confirm end to end.' +\n (declaresElicitation(meta) ? '' : `\\n\\n${MRTR_NOTE}`)\n );\n }\n const intro =\n body.method === 'initialize'\n ? 'Your client spoke the classic handshake protocol' +\n ' — the stateless draft (2026-07-28) has no initialize step.'\n : `Your client declared protocol version '${String(headerVersion ?? '(none)')}'.`;\n return (\n `DRAFT GAPS (${gaps.length}): ${intro} To be draft-ready it must also fix:\\n` +\n gaps.map((g, i) => `${i + 1}. ${g}`).join('\\n') +\n `\\n\\n${MRTR_NOTE}`\n );\n}\n\n/** Classic SDK server for lenient mode, carrying the gap report. */\nfunction createLenientClassicServer(\n checks: ConformanceCheck[],\n req: Request,\n body: { method?: string; params?: Record }\n): Server {\n const server = new Server(SERVER_INFO, {\n capabilities: { tools: {} },\n instructions:\n 'Lenient conformance gauntlet. Call every listed tool with valid ' +\n 'arguments; call draft_readiness for an itemized report of what ' +\n 'this client must change for the stateless draft protocol.\\n\\n' +\n readinessReport(req, body)\n });\n\n server.setRequestHandler(ListToolsRequestSchema, async () => ({\n // Classic requests carry no per-request capabilities, so MRTR can't be\n // capability-gated here the way it is in draft mode — list the\n // placeholder unconditionally so the old client discovers the gap.\n tools: [\n ...GAUNTLET_TOOLS.map(({ name, description, inputSchema }) => ({\n name,\n description,\n inputSchema\n })),\n DRAFT_READINESS_TOOL,\n ELICITATION_MISSING_TOOL\n ]\n }));\n\n server.setRequestHandler(\n CallToolRequestSchema,\n async (request): Promise => {\n if (request.params.name === DRAFT_READINESS_TOOL.name) {\n return {\n content: [{ type: 'text' as const, text: readinessReport(req, body) }]\n };\n }\n if (request.params.name === ELICITATION_MISSING_TOOL.name) {\n return {\n content: [\n {\n type: 'text' as const,\n text: `CONFORMANCE NOTE [elicitation_missing]: ${MRTR_NOTE}`\n }\n ]\n };\n }\n return runTool(\n checks,\n request.params.name,\n (request.params.arguments ?? {}) as Record,\n req,\n true\n );\n }\n );\n\n return server;\n}\n\nexport class StatelessGauntletScenario extends HandlerScenario {\n name = 'checker-2026-07-28';\n description =\n 'Single stateless MCP server with validating tools, draft protocol ' +\n '(SEP-2575) ONLY. List tools, call each once with valid arguments; any ' +\n 'error response tells you what the client got wrong. No run-id and no ' +\n 'results polling — every request is judged on its own content. Clients ' +\n 'that fall back to a classic version (initialize, or a 2025-* version ' +\n 'header) fail with an itemized list of what a draft request carries ' +\n 'that theirs did not.';\n readonly source = { introducedIn: '2025-06-18' } as const;\n mcpPath = '';\n\n private checks: ConformanceCheck[] = [];\n\n handler(getBaseUrl: () => string): express.Application {\n const app = express();\n app.use(express.json());\n app.use(express.urlencoded({ extended: false }));\n\n // -----------------------------------------------------------------------\n // Consent gate for `initialize` (and only initialize — nothing else is\n // auth-gated). An old client leading with initialize gets a 401; its\n // OAuth flow lands a human on an HTML page explaining that initialize\n // does not exist in the stateless draft. Continuing mints a consent\n // token, and a consented classic client is served leniently — so \"I\n // understand, test anyway\" is exactly what the token encodes. This\n // mini-AS is a consent-delivery vehicle, NOT an auth conformance test\n // (the auth/* scenarios cover that).\n // -----------------------------------------------------------------------\n const issuer = () => `${getBaseUrl()}/oauth`;\n // PRM URL per RFC 9728, derived from wherever this app is mounted:\n // root mount (dedicated checker val) → origin-rooted well-known;\n // /x/ mount (hosted runner) → path-suffixed well-known.\n const prmUrl = () => {\n const base = new URL(getBaseUrl());\n return `${base.origin}/.well-known/oauth-protected-resource${base.pathname === '/' ? '' : base.pathname}`;\n };\n\n app.get('/.well-known/oauth-protected-resource', (_req, res) => {\n res.json({\n resource: getBaseUrl(),\n authorization_servers: [issuer()],\n bearer_methods_supported: ['header']\n });\n });\n\n const asMetadata = (_req: Request, res: Response) => {\n res.json({\n issuer: issuer(),\n authorization_endpoint: `${issuer()}/authorize`,\n token_endpoint: `${issuer()}/token`,\n registration_endpoint: `${issuer()}/register`,\n response_types_supported: ['code'],\n grant_types_supported: ['authorization_code'],\n code_challenge_methods_supported: ['S256'],\n token_endpoint_auth_methods_supported: ['none']\n });\n };\n app.get('/.well-known/oauth-authorization-server/oauth', asMetadata);\n // OIDC-style discovery fallback for clients that only try this form.\n app.get('/.well-known/openid-configuration/oauth', asMetadata);\n\n app.post('/oauth/register', (req, res) => {\n res.status(201).json({\n ...req.body,\n client_id: 'gauntlet-consent-client',\n token_endpoint_auth_method: 'none'\n });\n });\n\n app.get('/oauth/authorize', (req, res) => {\n const query = new URLSearchParams(\n req.query as Record\n ).toString();\n const continueUrl = `${issuer()}/authorize/continue?${query}`;\n res.status(200).type('html').send(`\nHold on — initialize?\n\n\n

Hold on — this client led with `initialize`

The client you are testing started its session with an\ninitialize request. That is invalid in the new\nstateless protocol (2026-07-28 / SEP-2575) — there is no handshake;\nevery request carries the protocol version, client info, and capabilities\nitself.

You can continue with the test if you want: the gauntlet will serve this\nclient's classic flow and report what it is missing (see the\ndraft_readiness tool and the initialize result's instructions).\nBut know that leading with initialize will not work against\nstateless draft servers.

I understand — continue with the test

\n`);\n });\n\n app.get('/oauth/authorize/continue', (req, res) => {\n const q = req.query as Record;\n if (!q.redirect_uri) {\n res.status(400).json({\n error: 'invalid_request',\n error_description: 'redirect_uri required'\n });\n return;\n }\n const redirect = new URL(q.redirect_uri);\n const code = Buffer.from(\n JSON.stringify({\n consent: 'gauntlet-initialize',\n challenge: q.code_challenge ?? null\n })\n ).toString('base64url');\n redirect.searchParams.set('code', code);\n if (q.state !== undefined) redirect.searchParams.set('state', q.state);\n res.redirect(redirect.toString());\n });\n\n app.post('/oauth/token', (req, res) => {\n const grant = req.body as Record;\n let decoded: { consent?: string; challenge?: string | null };\n try {\n decoded = JSON.parse(\n Buffer.from(String(grant.code ?? ''), 'base64url').toString()\n );\n } catch {\n decoded = {};\n }\n if (\n grant.grant_type !== 'authorization_code' ||\n decoded.consent !== 'gauntlet-initialize'\n ) {\n res.status(400).json({ error: 'invalid_grant' });\n return;\n }\n if (decoded.challenge) {\n const expected = createHash('sha256')\n .update(String(grant.code_verifier ?? ''))\n .digest('base64url');\n if (expected !== decoded.challenge) {\n res.status(400).json({\n error: 'invalid_grant',\n error_description: 'PKCE verification failed'\n });\n return;\n }\n }\n res.json({\n access_token: CONSENT_TOKEN,\n token_type: 'Bearer',\n expires_in: 3600\n });\n });\n\n app.post('/', async (req: Request, res: Response) => {\n const body =\n req.body && !Array.isArray(req.body)\n ? (req.body as {\n method?: string;\n id?: unknown;\n params?: Record;\n })\n : {};\n const headerVersion = req.headers['mcp-protocol-version'];\n\n // This gauntlet tests the stateless draft protocol ONLY. A client\n // that falls back to a classic version (an `initialize` request or a\n // 2025-* version header) fails — but with a full inventory of what a\n // draft request must carry that this one didn't, so the failure is\n // also the upgrade guide. A request carrying draft `_meta` fields is\n // judged as draft no matter what its header claims (the disagreement\n // is reported, not routed around).\n const meta = (body.params?._meta ?? {}) as Record;\n const hasDraftMeta = Object.keys(meta).some((k) => k.startsWith(META_NS));\n const isClassicFallback =\n !hasDraftMeta &&\n ((body.method === 'initialize' && !isDraftVersion(headerVersion)) ||\n (headerVersion !== undefined &&\n CLASSIC_PROTOCOL_VERSIONS.includes(String(headerVersion))));\n\n // A consent token (minted by the initialize interstitial) means a\n // human read \"this client shouldn't do initialize\" and chose to\n // continue — serve the classic flow leniently from here on.\n const consented = req.headers.authorization === `Bearer ${CONSENT_TOKEN}`;\n if (isClassicFallback && consented) {\n const gaps = [...headerProblems(req), ...draftProblems(req, body)];\n check(\n this.checks,\n 'gauntlet-draft-readiness',\n 'Gauntlet: draft readiness (consented classic)',\n gaps.length === 0,\n 'Consented classic flow served leniently; draft gaps are advisory',\n { method: body.method, ...(gaps.length ? { gaps } : {}) },\n 'WARNING'\n );\n const server = createLenientClassicServer(this.checks, req, body);\n const transport = new StreamableHTTPServerTransport({\n sessionIdGenerator: undefined\n });\n await server.connect(transport);\n await transport.handleRequest(req, res, req.body);\n res.on('close', () => {\n void transport.close();\n void server.close();\n });\n return;\n }\n\n // initialize — and ONLY initialize — is gated on auth: the OAuth flow\n // lands a human on an HTML page explaining that the draft has no\n // initialize, with a \"continue anyway\" button. Clients without OAuth\n // get the same explanation in the 401 body. Recorded as WARNING so\n // the /x wrapper lets the 401 challenge through.\n if (isClassicFallback && body.method === 'initialize') {\n const explanation =\n 'This gauntlet tests the stateless draft protocol (2026-07-28): there is NO initialize handshake. Leading with initialize is invalid in the new spec. If your client supports OAuth, completing the authorization flow shows the full explanation and lets you continue testing the classic flow anyway; or point the client at this URL + /lenient for ungated advisory mode.';\n check(\n this.checks,\n 'gauntlet-transport-headers',\n 'Gauntlet: transport headers',\n false,\n 'Client led with initialize; challenged with the consent gate',\n { method: body.method, mode: 'initialize-consent-gate' },\n 'WARNING'\n );\n res\n .status(401)\n .set('WWW-Authenticate', `Bearer resource_metadata=\"${prmUrl()}\"`)\n .json({\n error: 'consent_required',\n explanation,\n problems: draftProblems(req, body)\n });\n return;\n }\n\n const problems = headerProblems(req);\n if (isClassicFallback) {\n problems.unshift(\n `Request declared classic protocol version '${String(headerVersion)}'. This gauntlet tests the stateless draft protocol only — declare 2026-07-28 (or DRAFT-2026-v1) in both the MCP-Protocol-Version header and _meta.`\n );\n }\n // Draft obligations are evaluated for EVERY request — for a classic\n // fallback this doubles as the itemized list of what was missing.\n problems.push(...draftProblems(req, body));\n\n check(\n this.checks,\n 'gauntlet-transport-headers',\n 'Gauntlet: transport headers',\n problems.length === 0,\n problems.length === 0\n ? 'Request carried conformant draft transport headers'\n : isClassicFallback\n ? 'Client fell back to a classic protocol version'\n : 'Request transport headers were not conformant',\n {\n method: body.method,\n mode: isClassicFallback ? 'classic-fallback-rejected' : 'draft',\n ...(problems.length ? { problems } : {})\n }\n );\n if (problems.length > 0) {\n res.status(400).json({\n error: 'conformance failure',\n mode: isClassicFallback ? 'classic-fallback-rejected' : 'draft',\n problems,\n hint: isClassicFallback\n ? 'Each listed problem is one thing a stateless draft request carries that this request did not. For advisory-only feedback that still serves classic flows, point the client at this URL + /lenient.'\n : 'Fix the listed transport problems and retry.'\n });\n return;\n }\n\n this.handleDraft(req, res, body);\n });\n\n // Lenient mode: old clients complete their flows (initialize included);\n // draft gaps are reported, not enforced. Tool failures stay isError\n // results, and gap checks are WARNINGs so the /x wrapper passes them.\n app.post('/lenient', async (req: Request, res: Response) => {\n const body =\n req.body && !Array.isArray(req.body)\n ? (req.body as {\n method?: string;\n id?: unknown;\n params?: Record;\n })\n : {};\n const headerVersion = req.headers['mcp-protocol-version'];\n const meta = (body.params?._meta ?? {}) as Record;\n const hasDraftMeta = Object.keys(meta).some((k) => k.startsWith(META_NS));\n\n const gaps = [...headerProblems(req), ...draftProblems(req, body)];\n check(\n this.checks,\n 'gauntlet-draft-readiness',\n 'Gauntlet: draft readiness (lenient)',\n gaps.length === 0,\n gaps.length === 0\n ? 'Request carries everything the stateless draft requires'\n : 'Request is missing draft obligations (advisory)',\n { method: body.method, ...(gaps.length ? { gaps } : {}) },\n 'WARNING'\n );\n\n if (!hasDraftMeta && !isDraftVersion(headerVersion)) {\n // Classic client: serve the real handshake so the flow completes;\n // the gap report rides in instructions and draft_readiness.\n const server = createLenientClassicServer(this.checks, req, body);\n const transport = new StreamableHTTPServerTransport({\n sessionIdGenerator: undefined\n });\n await server.connect(transport);\n await transport.handleRequest(req, res, req.body);\n res.on('close', () => {\n void transport.close();\n void server.close();\n });\n return;\n }\n\n this.handleDraft(req, res, body, true);\n });\n\n // Browsers get an explainer; programmatic GETs get the JSON hint.\n app.get('/', (req, res) => {\n if (!String(req.headers.accept ?? '').includes('text/html')) {\n res.status(405).json({\n error: 'stateless server: POST JSON-RPC to this URL',\n docs: 'open this URL in a browser for a full explanation'\n });\n return;\n }\n const base = getBaseUrl();\n res.type('html').send(`\nMCP Checker — 2026-07-28\n\n\n

MCP Checker — 2026-07-28

Conformance checker for the stateless draft MCP protocol\n(2026-07-28 / DRAFT-2026-v1) — and only that version. Other spec versions have their own checkers.

\n\n

How it works

This URL is the MCP endpoint. There is no run to mint and no results to\npoll: every request is judged on its own content. If your\nclient gets something wrong, the request itself fails with an explanation of\nwhat and why. If you can list the tools and call each one successfully, your\nclient is conformant for everything this server can observe.

POST ${base}            strict — stateless draft only\nPOST ${base}/lenient    advisory — classic clients complete, gaps reported

\n\n

What is checked

Every POST: Accept / Content-Type, MCP-Protocol-Version header,\n_meta declarations (io.modelcontextprotocol/protocolVersion, clientInfo,\nclientCapabilities — SEP-2575), and Mcp-Method/Mcp-Name routing headers (SEP-2243).
validate_arguments: argument construction against the inputSchema —\nstring, JSON number (not stringified), and a same-document $ref (SEP-2106).
mrtr_confirm: the multi-round-trip flow (SEP-2322) — answer the\nelicitation request and retry with requestState echoed unchanged. Listed only when\nyour _meta clientCapabilities declare {\"elicitation\": {}}; otherwise an\nelicitation_missing placeholder explains the gap.
draft_readiness (lenient/consented): itemized report of what the request\nthat carried it is missing relative to the draft.

\n\n

Old clients

Leading with initialize is invalid in the stateless draft, so the strict\nendpoint gates it behind an OAuth consent screen: your client's auth flow lands a human on a\npage explaining the situation, with a continue button. Continuing mints the bearer token\n${CONSENT_TOKEN} — the token is the message — and the classic flow is then served\nwith advisory feedback. No other request requires auth. Prefer zero friction? Use\n${base}/lenient.

\n\n

Try it

curl -X POST ${base} \\\\\n  -H 'content-type: application/json' \\\\\n  -H 'accept: application/json, text/event-stream' \\\\\n  -H 'mcp-protocol-version: 2026-07-28' \\\\\n  -H 'mcp-method: tools/list' \\\\\n  -d '{\"jsonrpc\":\"2.0\",\"id\":1,\"method\":\"tools/list\",\"params\":{\"_meta\":{\n    \"io.modelcontextprotocol/protocolVersion\":\"2026-07-28\",\n    \"io.modelcontextprotocol/clientInfo\":{\"name\":\"my-client\",\"version\":\"1.0\"},\n    \"io.modelcontextprotocol/clientCapabilities\":{}}}}'

\n`);\n });\n\n return app;\n }\n\n /**\n * Draft-2026 dispatch: no lifecycle, plain JSON responses, every request\n * self-contained. Transport/draft obligations were already enforced.\n */\n private handleDraft(\n req: Request,\n res: Response,\n body: { method?: string; id?: unknown; params?: Record },\n lenient = false\n ): void {\n const reply = (result: object) => {\n // 2026-07-28 makes resultType REQUIRED on every Result; default it here so\n // every path is covered, and let callers override (e.g. 'input_required').\n res.json({\n jsonrpc: '2.0',\n id: body.id ?? null,\n result: { resultType: 'complete', ...result }\n });\n };\n\n switch (body.method) {\n case 'server/discover':\n reply({\n ttlMs: 0,\n cacheScope: 'public',\n supportedVersions: DRAFT_VERSION_ALIASES,\n capabilities: { tools: {} },\n serverInfo: SERVER_INFO,\n instructions:\n 'Call every tool once with valid arguments. Each tool validates ' +\n 'the request that carried it; any error explains what your ' +\n 'client got wrong.'\n });\n return;\n\n case 'tools/list': {\n const meta = (body.params?._meta ?? {}) as Record;\n const tools = GAUNTLET_TOOLS.map(\n ({ name, description, inputSchema }) => ({\n name,\n description,\n inputSchema\n })\n );\n // MRTR is only part of the contract for clients that can answer\n // elicitation requests — gate the listing on the declared capability\n // each request carries. Clients without it get a placeholder that\n // makes the gap (and how to close it) discoverable.\n tools.push(\n declaresElicitation(meta) ? MRTR_TOOL : ELICITATION_MISSING_TOOL\n );\n if (lenient) tools.push(DRAFT_READINESS_TOOL);\n reply({ ttlMs: 0, cacheScope: 'public', tools });\n return;\n }\n\n case 'tools/call': {\n const params = (body.params ?? {}) as {\n name?: string;\n arguments?: Record;\n inputResponses?: Record;\n requestState?: string;\n _meta?: Record;\n };\n\n if (params.name === DRAFT_READINESS_TOOL.name && lenient) {\n reply({\n content: [{ type: 'text', text: readinessReport(req, body) }]\n });\n return;\n }\n\n if (params.name === MRTR_TOOL.name) {\n reply(this.runMrtr(params, lenient));\n return;\n }\n\n if (params.name === ELICITATION_MISSING_TOOL.name) {\n const declared = declaresElicitation(\n (params._meta ?? {}) as Record\n );\n this.checks.push({\n id: 'gauntlet-elicitation-missing',\n name: 'Gauntlet: elicitation capability not declared',\n description:\n 'Client called the elicitation_missing placeholder tool',\n status: 'INFO',\n timestamp: new Date().toISOString(),\n specReferences: [SPEC_TOOLS],\n details: { declared }\n });\n reply({\n content: [\n {\n type: 'text',\n text: declared\n ? 'CONFORMANCE NOTE [elicitation_missing]: this request DOES declare the elicitation capability — list tools again and you will see mrtr_confirm instead of this placeholder.'\n : 'CONFORMANCE NOTE [elicitation_missing]: your client has not declared the elicitation capability, so the MRTR (SEP-2322) tool mrtr_confirm is hidden. This is conformant — elicitation is optional — but to exercise the full gauntlet, implement elicitation and declare it in _meta ' +\n `${META_NS}clientCapabilities as {\"elicitation\": {}}; the full tool list will then appear.`\n }\n ]\n });\n return;\n }\n\n // MRTR plumbing must not leak onto unrelated calls (SEP-2322).\n if (\n params.inputResponses !== undefined ||\n params.requestState !== undefined\n ) {\n const detail =\n 'inputResponses/requestState MUST only be sent when retrying the ' +\n 'tool that returned input_required; they leaked onto ' +\n `'${params.name ?? '(none)'}'`;\n check(\n this.checks,\n 'gauntlet-mrtr-leak',\n 'Gauntlet: MRTR state leak',\n false,\n 'MRTR retry fields leaked onto an unrelated tool call',\n { detail }\n );\n reply({\n content: [\n {\n type: 'text',\n text: `CONFORMANCE FAIL [${params.name}]: ${detail}`\n }\n ],\n isError: true\n });\n return;\n }\n\n reply(\n runTool(this.checks, params.name ?? '', params.arguments ?? {}, req)\n );\n return;\n }\n\n case 'initialize':\n case 'ping':\n case 'logging/setLevel':\n // Removed from the stateless draft protocol entirely.\n res.status(404).json({\n jsonrpc: '2.0',\n id: body.id ?? null,\n error: {\n code: -32601,\n message: `Method not found: '${body.method}' does not exist in the stateless draft protocol (use server/discover, not initialize)`\n }\n });\n return;\n\n default:\n res.status(404).json({\n jsonrpc: '2.0',\n id: body.id ?? null,\n error: {\n code: -32601,\n message: `Method not found: '${body.method ?? '(none)'}'. Supported: server/discover, tools/list, tools/call`\n }\n });\n }\n }\n\n /**\n * Two-phase MRTR tool. First call → input_required with a self-contained\n * requestState. Retry → validate the echoed state and the elicitation\n * response shape, then complete.\n */\n private runMrtr(\n params: {\n inputResponses?: Record;\n requestState?: string;\n },\n lenient = false\n ): object {\n if (params.inputResponses === undefined) {\n // Round 1: ask for confirmation via elicitation.\n return {\n resultType: 'input_required',\n inputRequests: {\n confirm: {\n method: 'elicitation/create',\n params: {\n message: 'Confirm the MRTR round-trip by answering this.',\n requestedSchema: {\n type: 'object',\n properties: { confirmed: { type: 'boolean' } },\n required: ['confirmed']\n }\n }\n }\n },\n requestState: encodeMrtrState()\n };\n }\n\n // Round 2: judge the retry on its own content.\n const problems: string[] = [];\n if (params.requestState === undefined) {\n problems.push(\n 'requestState MUST be echoed back unchanged on the retry (SEP-2322)'\n );\n } else if (!decodeMrtrState(params.requestState)) {\n problems.push(\n `requestState was altered — it MUST be echoed back byte-exact; got '${params.requestState.slice(0, 60)}'`\n );\n }\n const confirm = params.inputResponses.confirm as\n | { action?: unknown; content?: { confirmed?: unknown } }\n | undefined;\n if (!confirm || typeof confirm !== 'object') {\n problems.push(\n \"inputResponses MUST be keyed by the inputRequests key ('confirm')\"\n );\n } else {\n if (\n confirm.action !== 'accept' &&\n confirm.action !== 'decline' &&\n confirm.action !== 'cancel'\n ) {\n problems.push(\n `elicitation response action MUST be accept/decline/cancel; got ${JSON.stringify(confirm.action)}`\n );\n }\n if (\n confirm.action === 'accept' &&\n typeof confirm.content?.confirmed !== 'boolean'\n ) {\n problems.push(\n `accepted elicitation content MUST match requestedSchema ({confirmed: boolean}); got ${JSON.stringify(confirm.content)}`\n );\n }\n }\n\n const ok = problems.length === 0;\n const detail = ok\n ? `requestState echoed intact; elicitation response valid (action=${String((params.inputResponses.confirm as { action?: unknown })?.action)})`\n : problems.join('; ');\n check(\n this.checks,\n 'gauntlet-mrtr_confirm',\n 'Gauntlet: mrtr_confirm',\n ok,\n ok\n ? 'Client completed the MRTR round-trip conformantly'\n : 'Client MRTR retry was not conformant',\n { detail },\n lenient ? 'WARNING' : 'FAILURE'\n );\n if (!ok) {\n return {\n content: [\n { type: 'text', text: `CONFORMANCE FAIL [mrtr_confirm]: ${detail}` }\n ],\n isError: true\n };\n }\n return {\n content: [\n { type: 'text', text: `CONFORMANCE OK [mrtr_confirm]: ${detail}` }\n ]\n };\n }\n\n getChecks(): ConformanceCheck[] {\n return this.checks;\n }\n}\n",[],[128,233,365,367],"87450a3e-b00a-4d1f-adf3-b52173803f61","sse-retry.ts","dd596744-ad13-11f1-9d57-1607ee4eb77e",34,["D",1789043625465],"/**\n * SSE Retry conformance test scenarios for MCP clients (SEP-1699)\n *\n * Tests that clients properly respect the SSE retry field by:\n * - Waiting the specified milliseconds before reconnecting\n * - Sending Last-Event-ID header on reconnection\n * - Treating graceful stream closure as reconnectable\n */\n\nimport http from 'node:http';\nimport {\n Scenario,\n ScenarioUrls,\n ConformanceCheck,\n RequestListener\n} from '../../types.ts';\n\nexport class SSERetryScenario implements Scenario {\n name = 'sse-retry';\n readonly source = { introducedIn: '2025-11-25' } as const;\n description =\n 'Tests that client respects SSE retry field timing and reconnects properly (SEP-1699)';\n\n private server: http.Server | null = null;\n private checks: ConformanceCheck[] = [];\n private port: number = 0;\n\n // Timing tracking\n private toolStreamCloseTime: number | null = null;\n private getReconnectionTime: number | null = null;\n private getConnectionCount: number = 0;\n private lastEventIds: (string | undefined)[] = [];\n private retryValue: number = 500; // 500ms\n private eventIdCounter: number = 0;\n private sessionId: string = `session-${Date.now()}`;\n\n // Pending tool call to respond to after reconnection\n private pendingToolCallId: number | string | null = null;\n private getResponseStream: http.ServerResponse | null = null;\n\n // Tolerances for timing validation\n private readonly EARLY_TOLERANCE = 50; // Allow 50ms early for scheduler variance\n private readonly LATE_TOLERANCE = 200; // Allow 200ms late for network/event loop\n private readonly VERY_LATE_MULTIPLIER = 2; // If >2x retry value, client is likely ignoring it\n\n handler(_getBaseUrl: () => string): RequestListener {\n this.checks = [];\n this.toolStreamCloseTime = null;\n this.getReconnectionTime = null;\n this.getConnectionCount = 0;\n this.lastEventIds = [];\n this.eventIdCounter = 0;\n this.sessionId = `session-${Date.now()}`;\n this.pendingToolCallId = null;\n this.getResponseStream = null;\n return (req, res) => this.handleRequest(req, res);\n }\n\n async start(): Promise {\n const listener = this.handler(() => `http://localhost:${this.port}`);\n return new Promise((resolve, reject) => {\n this.server = http.createServer(listener);\n this.server.on('error', reject);\n this.server.listen(0, () => {\n const address = this.server!.address();\n if (address && typeof address === 'object') {\n this.port = address.port;\n resolve({\n serverUrl: `http://localhost:${this.port}`\n });\n } else {\n reject(new Error('Failed to get server address'));\n }\n });\n });\n }\n\n async stop(): Promise {\n return new Promise((resolve, reject) => {\n if (this.server) {\n this.server.close((err) => {\n if (err) {\n reject(err);\n } else {\n this.server = null;\n resolve();\n }\n });\n } else {\n resolve();\n }\n });\n }\n\n getChecks(): ConformanceCheck[] {\n // Generate checks based on observed behavior\n this.generateChecks();\n return this.checks;\n }\n\n private handleRequest(\n req: http.IncomingMessage,\n res: http.ServerResponse\n ): void {\n if (req.method === 'GET') {\n // Track GET reconnection timing and Last-Event-ID\n this.getConnectionCount++;\n this.getReconnectionTime = performance.now();\n\n const lastEventId = req.headers['last-event-id'] as string | undefined;\n const description = lastEventId\n ? `Received GET request for ${req.url} (Last-Event-ID: ${lastEventId})`\n : `Received GET request for ${req.url}`;\n this.checks.push({\n id: 'incoming-request',\n name: 'IncomingRequest',\n description,\n status: 'INFO',\n timestamp: new Date().toISOString(),\n details: {\n method: 'GET',\n url: req.url,\n headers: req.headers,\n connectionCount: this.getConnectionCount\n }\n });\n\n if (lastEventId) {\n this.lastEventIds.push(lastEventId);\n }\n\n // Handle GET SSE stream request (reconnection)\n this.handleGetSSEStream(req, res);\n } else if (req.method === 'POST') {\n // Handle POST JSON-RPC requests\n this.handlePostRequest(req, res);\n } else {\n res.writeHead(405);\n res.end('Method Not Allowed');\n }\n }\n\n private handleGetSSEStream(\n _req: http.IncomingMessage,\n res: http.ServerResponse\n ): void {\n // Set SSE headers\n res.writeHead(200, {\n 'Content-Type': 'text/event-stream',\n 'Cache-Control': 'no-cache',\n Connection: 'keep-alive',\n 'mcp-session-id': this.sessionId\n });\n\n // Generate event ID\n this.eventIdCounter++;\n const eventId = `event-${this.eventIdCounter}`;\n\n // Send priming event with ID and retry field\n const primingContent = `id: ${eventId}\\nretry: ${this.retryValue}\\ndata: \\n\\n`;\n res.write(primingContent);\n\n this.checks.push({\n id: 'outgoing-sse-event',\n name: 'OutgoingSseEvent',\n description: `Sent SSE priming event on GET stream (id: ${eventId}, retry: ${this.retryValue}ms)`,\n status: 'INFO',\n timestamp: new Date().toISOString(),\n details: {\n eventId,\n retryMs: this.retryValue,\n eventType: 'priming',\n raw: primingContent\n }\n });\n\n // Store the GET stream to send pending tool response\n this.getResponseStream = res;\n\n // If we have a pending tool call, send the response now\n if (this.pendingToolCallId !== null) {\n const toolResponse = {\n jsonrpc: '2.0',\n id: this.pendingToolCallId,\n result: {\n content: [\n {\n type: 'text',\n text: 'Reconnection test completed successfully'\n }\n ]\n }\n };\n\n const responseEventId = `event-${++this.eventIdCounter}`;\n const responseContent = `event: message\\nid: ${responseEventId}\\ndata: ${JSON.stringify(toolResponse)}\\n\\n`;\n res.write(responseContent);\n\n this.checks.push({\n id: 'outgoing-sse-event',\n name: 'OutgoingSseEvent',\n description: `Sent tool response on GET stream after reconnection (id: ${responseEventId})`,\n status: 'INFO',\n timestamp: new Date().toISOString(),\n details: {\n eventId: responseEventId,\n eventType: 'message',\n jsonrpcId: this.pendingToolCallId,\n body: toolResponse,\n raw: responseContent\n }\n });\n\n this.pendingToolCallId = null;\n }\n }\n\n private handlePostRequest(\n req: http.IncomingMessage,\n res: http.ServerResponse\n ): void {\n let body = '';\n\n req.on('data', (chunk) => {\n body += chunk.toString();\n });\n\n req.on('end', () => {\n try {\n const request = JSON.parse(body);\n\n this.checks.push({\n id: 'incoming-request',\n name: 'IncomingRequest',\n description: `Received POST request for ${req.url} (method: ${request.method})`,\n status: 'INFO',\n timestamp: new Date().toISOString(),\n details: {\n method: 'POST',\n url: req.url,\n jsonrpcMethod: request.method,\n jsonrpcId: request.id\n }\n });\n\n if (request.method === 'initialize') {\n this.handleInitialize(req, res, request);\n } else if (request.method === 'tools/list') {\n this.handleToolsList(res, request);\n } else if (request.method === 'tools/call') {\n this.handleToolsCall(res, request);\n } else if (request.id === undefined) {\n // Notifications (no id) - return 202 Accepted\n res.writeHead(202);\n res.end();\n } else {\n // For other requests, send a simple JSON response\n res.writeHead(200, {\n 'Content-Type': 'application/json',\n 'mcp-session-id': this.sessionId\n });\n res.end(\n JSON.stringify({\n jsonrpc: '2.0',\n id: request.id,\n result: {}\n })\n );\n }\n } catch (error) {\n res.writeHead(400, { 'Content-Type': 'application/json' });\n res.end(\n JSON.stringify({\n jsonrpc: '2.0',\n error: {\n code: -32700,\n message: `Parse error: ${error}`\n }\n })\n );\n }\n });\n }\n\n private handleInitialize(\n _req: http.IncomingMessage,\n res: http.ServerResponse,\n request: any\n ): void {\n res.writeHead(200, {\n 'Content-Type': 'application/json',\n 'mcp-session-id': this.sessionId\n });\n\n const response = {\n jsonrpc: '2.0',\n id: request.id,\n result: {\n protocolVersion: '2025-03-26',\n serverInfo: {\n name: 'sse-retry-test-server',\n version: '1.0.0'\n },\n capabilities: {\n tools: {}\n }\n }\n };\n\n res.end(JSON.stringify(response));\n\n this.checks.push({\n id: 'outgoing-response',\n name: 'OutgoingResponse',\n description: `Sent initialize response`,\n status: 'INFO',\n timestamp: new Date().toISOString(),\n details: {\n jsonrpcId: request.id,\n body: response\n }\n });\n }\n\n private handleToolsList(res: http.ServerResponse, request: any): void {\n res.writeHead(200, {\n 'Content-Type': 'application/json',\n 'mcp-session-id': this.sessionId\n });\n\n const response = {\n jsonrpc: '2.0',\n id: request.id,\n result: {\n tools: [\n {\n name: 'test_reconnection',\n description:\n 'A tool that triggers SSE stream closure to test client reconnection behavior',\n inputSchema: {\n type: 'object',\n properties: {},\n required: []\n }\n }\n ]\n }\n };\n\n res.end(JSON.stringify(response));\n\n this.checks.push({\n id: 'outgoing-response',\n name: 'OutgoingResponse',\n description: `Sent tools/list response`,\n status: 'INFO',\n timestamp: new Date().toISOString(),\n details: {\n jsonrpcId: request.id,\n body: response\n }\n });\n }\n\n private handleToolsCall(res: http.ServerResponse, request: any): void {\n // Store the request ID so we can respond after reconnection\n this.pendingToolCallId = request.id;\n\n // Start SSE stream\n res.writeHead(200, {\n 'Content-Type': 'text/event-stream',\n 'Cache-Control': 'no-cache',\n Connection: 'keep-alive',\n 'mcp-session-id': this.sessionId\n });\n\n // Send priming event with retry field\n this.eventIdCounter++;\n const primingEventId = `event-${this.eventIdCounter}`;\n const primingContent = `id: ${primingEventId}\\nretry: ${this.retryValue}\\ndata: \\n\\n`;\n res.write(primingContent);\n\n this.checks.push({\n id: 'outgoing-sse-event',\n name: 'OutgoingSseEvent',\n description: `Sent SSE priming event for tools/call (id: ${primingEventId}, retry: ${this.retryValue}ms)`,\n status: 'INFO',\n timestamp: new Date().toISOString(),\n details: {\n eventId: primingEventId,\n retryMs: this.retryValue,\n eventType: 'priming',\n raw: primingContent\n }\n });\n\n // Close the stream after a short delay to trigger reconnection\n setTimeout(() => {\n this.toolStreamCloseTime = performance.now();\n this.checks.push({\n id: 'outgoing-stream-close',\n name: 'OutgoingStreamClose',\n description:\n 'Closed tools/call SSE stream to trigger client reconnection',\n status: 'INFO',\n timestamp: new Date().toISOString(),\n details: {\n retryMs: this.retryValue,\n pendingToolCallId: this.pendingToolCallId\n }\n });\n res.end();\n }, 50);\n }\n\n private generateChecks(): void {\n // Check 1: Client should have reconnected via GET after tool call stream close\n if (this.getConnectionCount < 1) {\n this.checks.push({\n id: 'client-sse-graceful-reconnect',\n name: 'ClientGracefulReconnect',\n description:\n 'Client reconnects via GET after SSE stream is closed gracefully',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Client did not attempt GET reconnection after stream closure. Client should treat graceful stream close as reconnectable.`,\n specReferences: [\n {\n id: 'SEP-1699',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1699'\n }\n ],\n details: {\n getConnectionCount: this.getConnectionCount,\n toolStreamCloseTime: this.toolStreamCloseTime,\n retryValue: this.retryValue\n }\n });\n return;\n }\n\n // Client did reconnect - SUCCESS for graceful reconnection\n this.checks.push({\n id: 'client-sse-graceful-reconnect',\n name: 'ClientGracefulReconnect',\n description:\n 'Client reconnects via GET after SSE stream is closed gracefully',\n status: 'SUCCESS',\n timestamp: new Date().toISOString(),\n specReferences: [\n {\n id: 'SEP-1699',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1699'\n }\n ],\n details: {\n getConnectionCount: this.getConnectionCount\n }\n });\n\n // Check 2: Client MUST respect retry field timing\n if (\n this.toolStreamCloseTime !== null &&\n this.getReconnectionTime !== null\n ) {\n const actualDelay = this.getReconnectionTime - this.toolStreamCloseTime;\n const minExpected = this.retryValue - this.EARLY_TOLERANCE;\n const maxExpected = this.retryValue + this.LATE_TOLERANCE;\n\n const tooEarly = actualDelay < minExpected;\n const slightlyLate = actualDelay > maxExpected;\n const veryLate =\n actualDelay > this.retryValue * this.VERY_LATE_MULTIPLIER;\n const withinTolerance = !tooEarly && !slightlyLate;\n\n let status: 'SUCCESS' | 'FAILURE' | 'WARNING' = 'SUCCESS';\n let errorMessage: string | undefined;\n\n if (tooEarly) {\n // Client reconnected too soon - MUST violation\n status = 'FAILURE';\n errorMessage = `Client reconnected too early (${actualDelay.toFixed(0)}ms instead of ${this.retryValue}ms). Client MUST respect the retry field and wait the specified time.`;\n } else if (veryLate) {\n // Client reconnected way too late - likely ignoring retry field entirely\n status = 'FAILURE';\n errorMessage = `Client reconnected very late (${actualDelay.toFixed(0)}ms instead of ${this.retryValue}ms). Client appears to be ignoring the retry field and using its own backoff strategy.`;\n } else if (slightlyLate) {\n // Client reconnected slightly late - not a spec violation but suspicious\n status = 'WARNING';\n errorMessage = `Client reconnected slightly late (${actualDelay.toFixed(0)}ms instead of ${this.retryValue}ms). This is acceptable but may indicate network delays.`;\n }\n\n this.checks.push({\n id: 'client-sse-retry-timing',\n name: 'ClientRespectsRetryField',\n description:\n 'Client MUST respect the retry field, waiting the given number of milliseconds before attempting to reconnect',\n status,\n timestamp: new Date().toISOString(),\n errorMessage,\n specReferences: [\n {\n id: 'SEP-1699',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1699'\n }\n ],\n details: {\n expectedRetryMs: this.retryValue,\n actualDelayMs: Math.round(actualDelay),\n minAcceptableMs: minExpected,\n maxAcceptableMs: maxExpected,\n veryLateThresholdMs: this.retryValue * this.VERY_LATE_MULTIPLIER,\n earlyToleranceMs: this.EARLY_TOLERANCE,\n lateToleranceMs: this.LATE_TOLERANCE,\n withinTolerance,\n tooEarly,\n slightlyLate,\n veryLate,\n getConnectionCount: this.getConnectionCount\n }\n });\n } else {\n this.checks.push({\n id: 'client-sse-retry-timing',\n name: 'ClientRespectsRetryField',\n description: 'Client MUST respect the retry field timing',\n status: 'WARNING',\n timestamp: new Date().toISOString(),\n errorMessage:\n 'Could not measure timing - tool stream close time or GET reconnection time not recorded',\n specReferences: [\n {\n id: 'SEP-1699',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1699'\n }\n ],\n details: {\n toolStreamCloseTime: this.toolStreamCloseTime,\n getReconnectionTime: this.getReconnectionTime\n }\n });\n }\n\n // Check 3: Client SHOULD send Last-Event-ID header on reconnection\n const hasLastEventId =\n this.lastEventIds.length > 0 && this.lastEventIds[0] !== undefined;\n\n this.checks.push({\n id: 'client-sse-last-event-id',\n name: 'ClientSendsLastEventId',\n description:\n 'Client SHOULD send Last-Event-ID header on reconnection for resumability',\n status: hasLastEventId ? 'SUCCESS' : 'WARNING',\n timestamp: new Date().toISOString(),\n specReferences: [\n {\n id: 'SEP-1699',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1699'\n }\n ],\n details: {\n hasLastEventId,\n lastEventIds: this.lastEventIds,\n getConnectionCount: this.getConnectionCount\n },\n errorMessage: !hasLastEventId\n ? 'Client did not send Last-Event-ID header on reconnection. This is a SHOULD requirement for resumability.'\n : undefined\n });\n }\n}\n",[],[128,233,365,375],"ffdec541-48b6-4d02-b521-c875d3b6e3f2","request-metadata.ts","dd02e8ec-ad13-11f1-bed6-1607ee4eb77e",33,["D",1789043624892],"import http from 'node:http';\nimport {\n HandlerScenario,\n RequestListener,\n ConformanceCheck,\n CheckStatus,\n DRAFT_PROTOCOL_VERSION\n} from '../../types.ts';\n\n/**\n * Severity ranking used to latch per-id check results: a single\n * non-conformant request is a violation even if later requests are\n * conformant, so a later better status must never overwrite a worse one.\n */\nconst STATUS_SEVERITY: Record = {\n FAILURE: 3,\n WARNING: 2,\n SUCCESS: 1,\n INFO: 1,\n SKIPPED: 0\n};\n\n/**\n * Every check ID this scenario can emit. Declared-but-unemitted checks are\n * backfilled as FAILURE by getChecks(), so the emitted ID set is the same for\n * every client. The positive-path test asserts this list is exact.\n */\nexport const DECLARED_CHECK_IDS = [\n 'sep-2575-http-client-sends-version-header',\n 'sep-2575-client-populates-meta',\n 'sep-2575-http-version-header-matches-meta',\n 'sep-2575-client-declares-roots-capability',\n 'sep-2575-client-declares-sampling-capability',\n 'sep-2575-client-declares-elicitation-capability',\n 'sep-2575-client-retry-supported-version'\n] as const;\n\nexport class RequestMetadataScenario extends HandlerScenario {\n name = 'request-metadata';\n readonly source = { introducedIn: DRAFT_PROTOCOL_VERSION } as const;\n description =\n 'Per-request _meta and MCP-Protocol-Version header obligations (SEP-2575)';\n\n private checks: ConformanceCheck[] = [];\n private hasSimulatedRejection = false;\n private requestsObserved = 0;\n\n handler(_getBaseUrl: () => string): RequestListener {\n this.hasSimulatedRejection = false;\n this.checks = [];\n this.requestsObserved = 0;\n return (req, res) => this.handleRequest(req, res);\n }\n\n getChecks(): ConformanceCheck[] {\n // Declared but never emitted -> FAILURE. A check that is legitimately not\n // applicable must be emitted as SKIPPED explicitly to avoid this.\n for (const id of DECLARED_CHECK_IDS) {\n if (!this.checks.some((c) => c.id === id)) {\n this.checks.push({\n id,\n name: 'NotObserved',\n description: `Declared check ${id} was never emitted`,\n status: 'FAILURE',\n errorMessage:\n this.requestsObserved === 0\n ? 'Check was not observed: the client never sent a request to the scenario server (no handler registered for this scenario?)'\n : 'Check was not observed: no request exercised it',\n timestamp: new Date().toISOString(),\n specReferences: [\n {\n id: 'SEP-2575',\n url: 'https://modelcontextprotocol.io/specification/draft/basic/index#meta'\n }\n ],\n details: { observed: false, requestsObserved: this.requestsObserved }\n });\n }\n }\n return this.checks;\n }\n\n private addOrUpdateCheck(check: ConformanceCheck): void {\n const index = this.checks.findIndex((c) => c.id === check.id);\n if (index === -1) {\n this.checks.push(check);\n return;\n }\n // Keep the worst status observed for this id (FAILURE > WARNING > SUCCESS\n // > SKIPPED): an equal-or-worse result replaces the stored check (so its\n // details stay fresh), but a better result must not erase a violation\n // recorded from an earlier request.\n const existing = this.checks[index];\n if (STATUS_SEVERITY[check.status] >= STATUS_SEVERITY[existing.status]) {\n this.checks[index] = check;\n }\n }\n\n private handleRequest(\n req: http.IncomingMessage,\n res: http.ServerResponse\n ): void {\n let body = '';\n req.on('data', (chunk) => {\n body += chunk.toString();\n });\n req.on('end', () => {\n const request = JSON.parse(body);\n this.requestsObserved++;\n\n // Extract version and headers\n const meta = request.params?._meta;\n const metaVersion = meta?.['io.modelcontextprotocol/protocolVersion'];\n const headerVersion = req.headers['mcp-protocol-version'];\n\n // 1. \"Every POST request to the MCP endpoint MUST include an\n // MCP-Protocol-Version header.\" — unconditional, so this fires for\n // server/discover too.\n this.addOrUpdateCheck({\n id: 'sep-2575-http-client-sends-version-header',\n name: 'ClientSendsVersionHeader',\n description: 'Client sends MCP-Protocol-Version header on every POST',\n status: headerVersion !== undefined ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n specReferences: [\n {\n id: 'SEP-2575',\n url: 'https://modelcontextprotocol.io/specification/draft/basic/transports#protocol-version-header'\n }\n ],\n details: { method: request.method, headerVersion }\n });\n\n // 2. \"Every client request MUST include the following\n // io.modelcontextprotocol/* fields in _meta: protocolVersion,\n // clientInfo, clientCapabilities.\"\n const hasClientInfo = meta?.['io.modelcontextprotocol/clientInfo'];\n const hasCapabilities =\n meta?.['io.modelcontextprotocol/clientCapabilities'];\n const metaIsValid = metaVersion && hasClientInfo && hasCapabilities;\n\n this.addOrUpdateCheck({\n id: 'sep-2575-client-populates-meta',\n name: 'ClientPopulatesMeta',\n description:\n 'Client populates _meta on every request with all three required fields',\n status: metaIsValid ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n specReferences: [\n {\n id: 'SEP-2575',\n url: 'https://modelcontextprotocol.io/specification/draft/basic/index#meta'\n }\n ],\n details: { method: request.method, meta }\n });\n\n // 3. \"The header value MUST match the io.modelcontextprotocol/protocolVersion\n // field carried in the request body's _meta.\" Only comparable when both\n // are present; absence is already covered by the two checks above, so\n // emit SKIPPED rather than falling through to the declared-check failure.\n const bothVersionsPresent =\n headerVersion !== undefined && metaVersion !== undefined;\n this.addOrUpdateCheck({\n id: 'sep-2575-http-version-header-matches-meta',\n name: 'ClientVersionHeaderMatchesMeta',\n description:\n 'MCP-Protocol-Version header matches _meta.protocolVersion',\n status: !bothVersionsPresent\n ? 'SKIPPED'\n : headerVersion === metaVersion\n ? 'SUCCESS'\n : 'FAILURE',\n timestamp: new Date().toISOString(),\n specReferences: [\n {\n id: 'SEP-2575',\n url: 'https://modelcontextprotocol.io/specification/draft/basic/transports#protocol-version-header'\n }\n ],\n details: { headerVersion, metaVersion }\n });\n\n // 4. Optional client capabilities conditional verification\n const capabilities = meta?.['io.modelcontextprotocol/clientCapabilities'];\n const checkOptionalCapability = (\n capabilityName: string,\n checkId: string,\n checkName: string\n ) => {\n let status: 'SUCCESS' | 'FAILURE' | 'SKIPPED' = 'SKIPPED';\n if (capabilities && capabilityName in capabilities) {\n const val = capabilities[capabilityName];\n const isValidObject =\n typeof val === 'object' && val !== null && !Array.isArray(val);\n status = isValidObject ? 'SUCCESS' : 'FAILURE';\n }\n this.addOrUpdateCheck({\n id: checkId,\n name: checkName,\n description: `Client declares valid ${capabilityName} capability if present`,\n status,\n timestamp: new Date().toISOString(),\n specReferences: [\n {\n id: 'SEP-2575',\n url: 'https://modelcontextprotocol.io/specification/draft/basic/index#capabilities'\n }\n ],\n details: { capabilityValue: capabilities?.[capabilityName] }\n });\n };\n\n checkOptionalCapability(\n 'roots',\n 'sep-2575-client-declares-roots-capability',\n 'ClientDeclaresRootsCapability'\n );\n checkOptionalCapability(\n 'sampling',\n 'sep-2575-client-declares-sampling-capability',\n 'ClientDeclaresSamplingCapability'\n );\n checkOptionalCapability(\n 'elicitation',\n 'sep-2575-client-declares-elicitation-capability',\n 'ClientDeclaresElicitationCapability'\n );\n\n // 5. Simulated Version Negotiation Retry Check\n if (!this.hasSimulatedRejection) {\n this.hasSimulatedRejection = true;\n\n this.addOrUpdateCheck({\n id: 'sep-2575-client-retry-supported-version',\n name: 'ClientRetrySupportedVersion',\n description:\n 'Client retries with a supported version when first choice is rejected',\n status: 'WARNING',\n timestamp: new Date().toISOString(),\n specReferences: [\n {\n id: 'SEP-2575',\n url: 'https://modelcontextprotocol.io/specification/draft/basic/transports#protocol-version-header'\n }\n ],\n details: { headerVersion }\n });\n\n res.writeHead(400, { 'Content-Type': 'application/json' });\n res.end(\n JSON.stringify({\n jsonrpc: '2.0',\n id: request.id ?? null,\n error: {\n // UnsupportedProtocolVersionError per the draft schema.\n code: -32004,\n message: 'Unsupported protocol version',\n data: {\n supported: [DRAFT_PROTOCOL_VERSION]\n }\n }\n })\n );\n return;\n }\n\n const retryCheck = this.checks.find(\n (c) => c.id === 'sep-2575-client-retry-supported-version'\n );\n if (retryCheck) {\n if (\n headerVersion === DRAFT_PROTOCOL_VERSION &&\n metaVersion === DRAFT_PROTOCOL_VERSION\n ) {\n retryCheck.status = 'SUCCESS';\n } else {\n retryCheck.status = 'WARNING';\n }\n retryCheck.details = {\n ...retryCheck.details,\n retryHeaderVersion: headerVersion,\n retryMetaVersion: metaVersion\n };\n }\n\n // server/discover is optional for clients (spec: \"Clients MAY call it\"),\n // so no check is emitted; we still respond so a client that does call it\n // proceeds normally and exercises the per-request _meta/header checks above.\n if (request.method === 'server/discover') {\n res.writeHead(200, { 'Content-Type': 'application/json' });\n res.end(\n JSON.stringify({\n jsonrpc: '2.0',\n id: request.id,\n result: {\n supportedVersions: [DRAFT_PROTOCOL_VERSION],\n capabilities: {},\n serverInfo: { name: 'test', version: '1.0' }\n }\n })\n );\n return;\n }\n\n // Return generic response to unblock client\n let result: object = {};\n if (request.method === 'tools/list') {\n result = { tools: [] };\n } else if (request.method === 'tools/call') {\n result = { content: [] };\n }\n res.writeHead(200, { 'Content-Type': 'application/json' });\n res.end(JSON.stringify({ jsonrpc: '2.0', id: request.id, result }));\n });\n }\n}\n",[],[128,233,365,383],"b3880fa7-977c-49ac-a2ad-577e5e40e51e","mrtr-client.ts","dca475e6-ad13-11f1-bafc-1607ee4eb77e",32,["D",1789043624286],"/**\n * SEP-2322: MRTR Client Conformance Tests\n *\n * Tests that clients correctly handle the MRTR (Multi-Round Tool Resolution) flow:\n * - Echo requestState back unchanged when retrying\n * - Don't include requestState when server didn't send one\n * - Use a different JSON-RPC id on retry\n *\n * The server exposes two tools. The client calls each tool, gets InputRequiredResult,\n * fulfills the elicitation, and retries. The server verifies correct client behavior.\n */\n\nimport type { ConformanceCheck, RequestListener } from '../../types.ts';\nimport { HandlerScenario, DRAFT_PROTOCOL_VERSION } from '../../types.ts';\nimport express, { Request, Response } from 'npm:express@^5.1.0';\nimport { randomUUID } from 'node:crypto';\n\nconst MRTR_SPEC_REFERENCES = [\n {\n id: 'SEP-2322-MRTR',\n url: 'https://modelcontextprotocol.io/specification/draft/basic/utilities/mrtr'\n }\n];\n\nconst TOOLS = [\n {\n name: 'test_mrtr_echo_state',\n description:\n 'Test tool: triggers MRTR flow with requestState. Client must echo state back unchanged.',\n inputSchema: {\n type: 'object' as const,\n properties: {},\n required: [] as string[]\n }\n },\n {\n name: 'test_mrtr_no_state',\n description:\n 'Test tool: triggers MRTR flow WITHOUT requestState. Client must NOT include requestState in retry.',\n inputSchema: {\n type: 'object' as const,\n properties: {},\n required: [] as string[]\n }\n },\n {\n name: 'test_mrtr_unrelated',\n description:\n 'Test tool: simple tool called between MRTR rounds. Must NOT carry inputResponses or requestState from another tool.',\n inputSchema: {\n type: 'object' as const,\n properties: {},\n required: [] as string[]\n }\n },\n {\n name: 'test_mrtr_no_result_type',\n description:\n 'Test tool: returns a result without resultType. Client must treat it as complete (default).',\n inputSchema: {\n type: 'object' as const,\n properties: {},\n required: [] as string[]\n }\n }\n];\n\ninterface JsonRpcRequest {\n jsonrpc: '2.0';\n id: string | number;\n method: string;\n params?: Record;\n}\n\nfunction createMRTRServer(checks: ConformanceCheck[]): express.Application {\n const app = express();\n app.use(express.json());\n\n // Track original JSON-RPC ids per tool to verify they change on retry\n const originalIds = new Map();\n // Track the exact requestState string sent, to verify byte-exact echo on retry\n const sentStates = new Map();\n\n app.post('/mcp', (req: Request, res: Response) => {\n const body = req.body as JsonRpcRequest;\n const { id, method, params } = body;\n\n switch (method) {\n case 'notifications/initialized': {\n res.status(204).end();\n return;\n }\n\n case 'tools/list': {\n res.json({\n jsonrpc: '2.0',\n id,\n result: { tools: TOOLS }\n });\n return;\n }\n\n case 'tools/call': {\n const toolName = (params as Record)?.name as string;\n const inputResponses = (params as Record)\n ?.inputResponses as Record | undefined;\n const requestState = (params as Record)\n ?.requestState as string | undefined;\n\n if (toolName === 'test_mrtr_echo_state') {\n handleEchoState(id, inputResponses, requestState, checks, res);\n return;\n }\n\n if (toolName === 'test_mrtr_no_state') {\n handleNoState(id, inputResponses, requestState, checks, res);\n return;\n }\n\n if (toolName === 'test_mrtr_unrelated') {\n handleUnrelated(inputResponses, requestState, checks, res, id);\n return;\n }\n\n if (toolName === 'test_mrtr_no_result_type') {\n handleNoResultType(id, inputResponses, checks, res);\n return;\n }\n\n res.json({\n jsonrpc: '2.0',\n id,\n error: { code: -32601, message: `Unknown tool: ${toolName}` }\n });\n return;\n }\n\n case 'elicitation/create': {\n // Client is fulfilling our ElicitRequest — accept it\n res.json({\n jsonrpc: '2.0',\n id,\n result: { action: 'accept', content: { confirmed: true } }\n });\n return;\n }\n\n default: {\n res.json({\n jsonrpc: '2.0',\n id,\n error: { code: -32601, message: `Method not found: ${method}` }\n });\n return;\n }\n }\n });\n\n function handleEchoState(\n id: string | number,\n inputResponses: Record | undefined,\n requestState: string | undefined,\n checks: ConformanceCheck[],\n res: Response\n ) {\n if (!inputResponses) {\n // Initial call — store original id, return InputRequiredResult with requestState\n originalIds.set('echo_state', id);\n const state = JSON.stringify({\n nonce: randomUUID(),\n originalId: id\n });\n sentStates.set('echo_state', state);\n res.json({\n jsonrpc: '2.0',\n id,\n result: {\n resultType: 'input_required',\n inputRequests: {\n confirm: {\n method: 'elicitation/create',\n params: {\n message: 'Please confirm to continue',\n requestedSchema: {\n type: 'object',\n properties: {\n confirmed: { type: 'boolean', description: 'Confirm?' }\n }\n }\n }\n }\n },\n requestState: state\n }\n });\n return;\n }\n\n // Retry — verify requestState was echoed back correctly\n const originalId = originalIds.get('echo_state');\n const sentState = sentStates.get('echo_state');\n\n // Check 1: requestState must be present and byte-for-byte identical to\n // what the server sent. The spec requires the client to echo back the\n // *exact value* without inspecting, parsing, or modifying it — so a\n // semantically-equal but re-serialized string is still a failure.\n const stateErrors: string[] = [];\n if (!requestState) {\n stateErrors.push('Client did not include requestState in retry');\n } else if (requestState !== sentState) {\n stateErrors.push(\n 'requestState was not echoed back exactly — clients MUST NOT inspect, parse, or modify it'\n );\n }\n\n checks.push({\n id: 'sep-2322-client-request-state-echoed',\n name: 'MRTRClientRequestStateEchoed',\n description:\n 'Client MUST echo back the exact value of requestState when retrying',\n status: stateErrors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: stateErrors.length > 0 ? stateErrors.join('; ') : undefined,\n specReferences: MRTR_SPEC_REFERENCES,\n details: {\n requestStateSent: sentState,\n requestStateReceived: requestState,\n originalId\n }\n });\n\n // Check 2: JSON-RPC id must differ from original\n const idErrors: string[] = [];\n if (id === originalId) {\n idErrors.push(\n `JSON-RPC id is the same on retry (${id}) — MUST be different`\n );\n }\n\n checks.push({\n id: 'sep-2322-client-jsonrpc-id-different',\n name: 'MRTRClientJsonRpcIdDifferent',\n description:\n 'The JSON-RPC id MUST be different between the initial request and the retry',\n status: idErrors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: idErrors.length > 0 ? idErrors.join('; ') : undefined,\n specReferences: MRTR_SPEC_REFERENCES,\n details: {\n originalId,\n retryId: id\n }\n });\n\n // Return complete result\n res.json({\n jsonrpc: '2.0',\n id,\n result: {\n content: [{ type: 'text', text: 'echo-state-ok' }]\n }\n });\n }\n\n function handleNoState(\n id: string | number,\n inputResponses: Record | undefined,\n requestState: string | undefined,\n checks: ConformanceCheck[],\n res: Response\n ) {\n if (!inputResponses) {\n // Initial call — return InputRequiredResult WITHOUT requestState\n res.json({\n jsonrpc: '2.0',\n id,\n result: {\n resultType: 'input_required',\n inputRequests: {\n confirm: {\n method: 'elicitation/create',\n params: {\n message: 'Please confirm to continue (no state test)',\n requestedSchema: {\n type: 'object',\n properties: {\n confirmed: { type: 'boolean', description: 'Confirm?' }\n }\n }\n }\n }\n }\n // No requestState field!\n }\n });\n return;\n }\n\n // Retry — verify client did NOT include requestState\n const errors: string[] = [];\n if (requestState !== undefined) {\n errors.push(\n `Client included requestState (\"${requestState}\") but server did not send one — MUST NOT include it`\n );\n }\n\n checks.push({\n id: 'sep-2322-client-no-state-omitted',\n name: 'MRTRClientNoStateOmitted',\n description:\n 'If InputRequiredResult does not contain requestState, client MUST NOT include one in the retry',\n status: errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: errors.length > 0 ? errors.join('; ') : undefined,\n specReferences: MRTR_SPEC_REFERENCES,\n details: {\n requestStateReceived: requestState\n }\n });\n\n // Return complete result\n res.json({\n jsonrpc: '2.0',\n id,\n result: {\n content: [{ type: 'text', text: 'no-state-ok' }]\n }\n });\n }\n\n function handleUnrelated(\n inputResponses: Record | undefined,\n requestState: string | undefined,\n checks: ConformanceCheck[],\n res: Response,\n id: string | number\n ) {\n // This tool should NEVER receive inputResponses or requestState —\n // those belong to a different tool's MRTR flow\n const errors: string[] = [];\n if (inputResponses !== undefined) {\n errors.push(\n `Unrelated tool call included inputResponses from another tool's MRTR flow`\n );\n }\n if (requestState !== undefined) {\n errors.push(\n `Unrelated tool call included requestState from another tool's MRTR flow`\n );\n }\n\n checks.push({\n id: 'sep-2322-client-parallel-isolation',\n name: 'MRTRClientParallelIsolation',\n description:\n 'inputRequests and requestState MUST NOT be used for any other request the client may be sending',\n status: errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: errors.length > 0 ? errors.join('; ') : undefined,\n specReferences: MRTR_SPEC_REFERENCES,\n details: {\n inputResponsesReceived: inputResponses,\n requestStateReceived: requestState\n }\n });\n\n // Return a normal complete result\n res.json({\n jsonrpc: '2.0',\n id,\n result: {\n content: [{ type: 'text', text: 'unrelated-ok' }]\n }\n });\n }\n\n function handleNoResultType(\n id: string | number,\n inputResponses: Record | undefined,\n checks: ConformanceCheck[],\n res: Response\n ) {\n const checkId = 'sep-2322-default-result-type-complete';\n\n // If the client retries this tool, it means it did NOT treat the result as complete\n if (inputResponses) {\n // Remove any prior SUCCESS for this check (emitted when we first sent the response)\n const existingIdx = checks.findIndex((c) => c.id === checkId);\n if (existingIdx !== -1) checks.splice(existingIdx, 1);\n\n checks.push({\n id: checkId,\n name: 'DefaultResultTypeComplete',\n description:\n 'Client MUST assume resultType \"complete\" when not specified',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage:\n 'Client retried with inputResponses even though the result had no resultType (should default to complete)',\n specReferences: MRTR_SPEC_REFERENCES\n });\n res.json({\n jsonrpc: '2.0',\n id,\n result: { content: [{ type: 'text', text: 'unexpected-retry' }] }\n });\n return;\n }\n\n // Return a result WITHOUT resultType — client should treat as complete\n checks.push({\n id: checkId,\n name: 'DefaultResultTypeComplete',\n description:\n 'Client MUST assume resultType \"complete\" when not specified',\n status: 'SUCCESS',\n timestamp: new Date().toISOString(),\n specReferences: MRTR_SPEC_REFERENCES\n });\n\n res.json({\n jsonrpc: '2.0',\n id,\n result: {\n // Deliberately NO resultType field\n content: [{ type: 'text', text: 'no-result-type-test-ok' }]\n }\n });\n }\n\n return app;\n}\n\nexport class MRTRClientScenario extends HandlerScenario {\n name = 'sep-2322-client-request-state';\n readonly source = { introducedIn: DRAFT_PROTOCOL_VERSION } as const;\n description =\n 'Tests client MRTR behavior: requestState echo, no-state omission, and JSON-RPC id uniqueness (SEP-2322)';\n mcpPath = '/mcp';\n private checks: ConformanceCheck[] = [];\n\n handler(_getBaseUrl: () => string): RequestListener {\n this.checks = [];\n return createMRTRServer(this.checks);\n }\n\n getChecks(): ConformanceCheck[] {\n const expectedSlugs = [\n 'sep-2322-client-request-state-echoed',\n 'sep-2322-client-jsonrpc-id-different',\n 'sep-2322-client-no-state-omitted',\n 'sep-2322-client-parallel-isolation',\n 'sep-2322-default-result-type-complete'\n ];\n\n for (const slug of expectedSlugs) {\n if (!this.checks.find((c) => c.id === slug)) {\n this.checks.push({\n id: slug,\n name: slug,\n description: `MRTR client check: ${slug}`,\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n details: {\n message: 'Tool was not called by client or MRTR flow not completed'\n },\n specReferences: MRTR_SPEC_REFERENCES\n });\n }\n }\n return this.checks;\n }\n}\n",[],[128,233,365,391],"df8c3739-0f9f-4404-86ca-9a5ccc8fb794","json-schema-ref-deref.ts","d5280f76-ad13-11f1-a016-1607ee4eb77e",11,["D",1789043611708],"import { Server } from 'npm:@modelcontextprotocol/sdk@^1.29.0/server/index.js';\nimport { StreamableHTTPServerTransport } from 'npm:@modelcontextprotocol/sdk@^1.29.0/server/streamableHttp.js';\nimport { ListToolsRequestSchema } from 'npm:@modelcontextprotocol/sdk@^1.29.0/types.js';\nimport type { ConformanceCheck, RequestListener } from '../../types.ts';\nimport express, { Request, Response } from 'npm:express@^5.1.0';\nimport { HandlerScenario, DRAFT_PROTOCOL_VERSION } from '../../types.ts';\n\n/**\n * Scenario: JSON Schema network $ref dereferencing (SEP-2106)\n *\n * SEP-2106 permits the full JSON Schema 2020-12 vocabulary in tool schemas,\n * including `$ref`. A `$ref` that resolves to a network URI is an SSRF /\n * fetch-DoS vector: a malicious tool definition could point at internal\n * infrastructure and have the *client* fetch it during schema processing.\n *\n * Per SEP-2106, implementations MUST NOT automatically dereference `$ref`\n * values that resolve to a network URI (anything that is not a same-document\n * JSON Pointer such as `#/$defs/Foo` or an internal `$anchor`).\n *\n * This scenario advertises a tool whose inputSchema contains both a\n * same-document `$ref` and a `$ref` to a canary URL hosted by the scenario\n * itself. If the client fetches the canary URL at any point before the\n * scenario stops, the check fails.\n */\n\nconst TOOL_NAME = 'lookup_user';\nconst CANARY_PATH = '/canary/profile-schema.json';\nconst TOOLS_LISTED_EVENT = '_state/tools-listed';\nconst CANARY_EVENT = '_state/canary-fetched';\nconst CHECK_ID = 'sep-2106-no-network-ref-deref';\n\nconst SPEC_REFERENCES = [\n {\n id: 'SEP-2106',\n url: 'https://modelcontextprotocol.io/seps/2106-json-schema-2020-12#security-implications'\n }\n];\n\nfunction createMcpServer(canaryUrl: string, onToolsListed: () => void): Server {\n const server = new Server(\n { name: 'json-schema-ref-deref-server', version: '1.0.0' },\n { capabilities: { tools: {} } }\n );\n\n server.setRequestHandler(ListToolsRequestSchema, async () => {\n onToolsListed();\n return {\n tools: [\n {\n name: TOOL_NAME,\n description: 'Look up a user profile by id',\n inputSchema: {\n $schema: 'https://json-schema.org/draft/2020-12/schema',\n type: 'object',\n $defs: {\n userId: { type: 'string', pattern: '^[a-z0-9-]+$' }\n },\n properties: {\n // Same-document $ref: safe, expected to be resolvable locally.\n id: { $ref: '#/$defs/userId' },\n // Network $ref: the canary. Implementations MUST NOT fetch this\n // automatically while processing the schema.\n profile: { $ref: canaryUrl }\n },\n required: ['id']\n }\n }\n ]\n };\n });\n\n return server;\n}\n\nexport class JsonSchemaRefDerefScenario extends HandlerScenario {\n name = 'json-schema-ref-no-deref';\n readonly source = { introducedIn: DRAFT_PROTOCOL_VERSION } as const;\n description = `Tests that a client does not automatically dereference a network-URI \\`$ref\\` in a tool's inputSchema (SEP-2106).\n\nThe scenario advertises a tool whose inputSchema contains a \\`$ref\\` pointing at a canary URL. The client should list tools (and may otherwise process the schema), but must not fetch the canary URL. Same-document refs (\\`#/$defs/...\\`) remain safe to resolve.`;\n mcpPath = '/mcp';\n /** List only — the point is what the client does NOT fetch afterwards. */\n readonly steps = [{ op: 'tools/list' }] as const;\n\n /**\n * Raw event log. What the scenario observed is kept as INFO events here\n * (rather than in private fields) so a host that spreads one run over\n * several processes can merge the logs and judge once — see rawChecks().\n */\n checks: ConformanceCheck[] = [];\n\n private record(id: string, details?: Record): void {\n this.checks.push({\n id,\n name: id,\n description: id,\n status: 'INFO',\n timestamp: new Date().toISOString(),\n details\n });\n }\n\n rawChecks(): ConformanceCheck[] {\n return this.checks;\n }\n\n handler(getBaseUrl: () => string): RequestListener {\n this.checks = [];\n\n const app = express();\n app.use(express.json());\n\n // Canary endpoint: any request here means the client dereferenced the\n // network $ref. Return a valid schema so a dereferencing client gets a\n // realistic response rather than an error it might silently swallow.\n app.all(CANARY_PATH, (req: Request, res: Response) => {\n this.record(CANARY_EVENT, {\n method: req.method,\n userAgent: req.headers['user-agent']\n });\n res.json({\n $schema: 'https://json-schema.org/draft/2020-12/schema',\n type: 'object',\n properties: { displayName: { type: 'string' } }\n });\n });\n\n app.post('/mcp', async (req: Request, res: Response) => {\n try {\n // Stateless: fresh server and transport per request\n const canaryUrl = `${getBaseUrl()}${CANARY_PATH}`;\n const server = createMcpServer(canaryUrl, () => {\n this.record(TOOLS_LISTED_EVENT);\n });\n const transport = new StreamableHTTPServerTransport({\n sessionIdGenerator: undefined\n });\n await server.connect(transport);\n await transport.handleRequest(req, res, req.body);\n } catch (error) {\n if (!res.headersSent) {\n res.status(500).json({\n jsonrpc: '2.0',\n error: {\n code: -32603,\n message: `Internal error: ${error instanceof Error ? error.message : String(error)}`\n },\n id: null\n });\n }\n }\n });\n\n return app;\n }\n\n getChecks(): ConformanceCheck[] {\n // Built fresh on every call so getChecks() is idempotent — the runner may\n // call it more than once and we must not accumulate duplicates.\n const timestamp = new Date().toISOString();\n const canaryRequests = this.checks\n .filter((c) => c.id === CANARY_EVENT)\n .map((c) => c.details ?? {});\n const toolsListed = this.checks.some((c) => c.id === TOOLS_LISTED_EVENT);\n const fetched = canaryRequests.length > 0;\n\n if (!toolsListed) {\n return [\n {\n id: CHECK_ID,\n name: 'NoNetworkRefDereference',\n description:\n 'Client never requested tools/list, so $ref handling could not be evaluated',\n status: 'FAILURE',\n timestamp,\n errorMessage:\n 'Client did not call tools/list against a server advertising a tool with a network $ref',\n specReferences: SPEC_REFERENCES,\n details: { toolsListed: false }\n }\n ];\n }\n\n return [\n {\n id: CHECK_ID,\n name: 'NoNetworkRefDereference',\n description: fetched\n ? 'Client automatically dereferenced a network-URI $ref in a tool inputSchema. Implementations MUST NOT automatically dereference $ref values that resolve to a network URI (SEP-2106).'\n : 'Client did not dereference the network-URI $ref in the tool inputSchema',\n status: fetched ? 'FAILURE' : 'SUCCESS',\n timestamp,\n errorMessage: fetched\n ? `Canary URL ${CANARY_PATH} was fetched ${canaryRequests.length} time(s)`\n : undefined,\n specReferences: SPEC_REFERENCES,\n details: {\n toolsListed: true,\n canaryRequestCount: canaryRequests.length,\n canaryRequests\n }\n }\n ];\n }\n}\n",[],[128,233,365,399],"fb1c671f-e10c-4c96-ab60-b5f79da23565","d60e02ce-ad13-11f1-8e58-1607ee4eb77e",13,["D",1789043613201],"/**\n * HTTP Standard Headers conformance test scenario for MCP clients (SEP-2243)\n *\n * Tests that clients include the required standard MCP request headers on\n * Streamable HTTP POST requests:\n * - `Mcp-Method`: mirrors the `method` field from the JSON-RPC request body\n * - `Mcp-Name`: mirrors `params.name` or `params.uri` for tools/call,\n * resources/read, and prompts/get requests\n *\n * This is a Scenario (acts as a test server that inspects incoming requests\n * from the client under test).\n */\n\nimport http from 'node:http';\nimport { ConformanceCheck } from '../../types.ts';\nimport { BaseHttpScenario } from './http-base.ts';\n\nconst SPEC_REFERENCE = {\n id: 'SEP-2243-Standard-Headers',\n url: 'https://modelcontextprotocol.io/specification/draft/basic/transports#standard-mcp-request-headers'\n};\n\nexport class HttpStandardHeadersScenario extends BaseHttpScenario {\n name = 'http-standard-headers';\n description =\n 'Tests that client includes Mcp-Method and Mcp-Name headers on HTTP POST requests (SEP-2243)';\n\n // Track which header checks have been recorded\n private methodHeaderChecks = new Map();\n // Track which Mcp-Name checks have been recorded\n private nameHeaderChecks = new Map();\n\n getChecks(): ConformanceCheck[] {\n // Build a fresh array each call so getChecks() is idempotent — the runner\n // may call it more than once and we must not accumulate duplicates.\n const result = [...this.checks];\n\n // SEP-2243 requires Mcp-Method on \"all requests and notifications\". A\n // client that never sent prompts/list isn't violating SEP-2243 — it just\n // didn't exercise that path. Emit SKIPPED (not FAILURE) so a prompts-less\n // client doesn't show red, but the gap is still visible in the report.\n const expectedMethods = [\n 'initialize',\n 'notifications/initialized',\n 'tools/list',\n 'tools/call',\n 'resources/list',\n 'resources/read',\n 'prompts/list',\n 'prompts/get'\n ];\n\n for (const method of expectedMethods) {\n if (!this.methodHeaderChecks.has(method)) {\n result.push({\n id: 'sep-2243-client-includes-standard-headers',\n name: `ClientMcpMethodHeader_${method.replace(/\\//g, '_')}`,\n description: `Client sends correct Mcp-Method header on ${method} request`,\n status: 'SKIPPED',\n timestamp: new Date().toISOString(),\n errorMessage: `Client did not send a ${method} request; Mcp-Method header was not exercised for this method.`,\n specReferences: [SPEC_REFERENCE]\n });\n }\n }\n\n const expectedNameMethods = ['tools/call', 'resources/read', 'prompts/get'];\n for (const method of expectedNameMethods) {\n if (!this.nameHeaderChecks.has(method)) {\n result.push({\n id: 'sep-2243-client-includes-standard-headers',\n name: `ClientMcpNameHeader_${method.replace(/\\//g, '_')}`,\n description: `Client sends correct Mcp-Name header on ${method} request`,\n status: 'SKIPPED',\n timestamp: new Date().toISOString(),\n errorMessage: `Client did not send a ${method} request; Mcp-Name header was not exercised for this method.`,\n specReferences: [SPEC_REFERENCE]\n });\n }\n }\n\n return result;\n }\n\n protected handlePost(\n req: http.IncomingMessage,\n res: http.ServerResponse,\n request: any\n ): void {\n // Check Mcp-Method header for every request\n this.checkMcpMethodHeader(req, request);\n\n // Route to handlers\n if (request.method === 'initialize') {\n this.handleInitialize(res, request);\n } else if (request.method === 'tools/list') {\n this.handleToolsList(res, request);\n } else if (request.method === 'tools/call') {\n this.checkMcpNameHeader(req, request, 'params.name');\n this.handleToolsCall(res, request);\n } else if (request.method === 'resources/list') {\n this.handleResourcesList(res, request);\n } else if (request.method === 'resources/read') {\n this.checkMcpNameHeader(req, request, 'params.uri');\n this.handleResourcesRead(res, request);\n } else if (request.method === 'prompts/list') {\n this.handlePromptsList(res, request);\n } else if (request.method === 'prompts/get') {\n this.checkMcpNameHeader(req, request, 'params.name');\n this.handlePromptsGet(res, request);\n } else if (request.id === undefined) {\n // Notifications - return 202 (Mcp-Method already checked above)\n this.sendNotificationAck(res);\n } else {\n this.sendGenericResult(res, request);\n }\n }\n\n private checkMcpMethodHeader(req: http.IncomingMessage, request: any): void {\n const method = request.method;\n if (!method) return;\n\n // Already recorded a check for this method\n if (this.methodHeaderChecks.has(method)) return;\n\n // Header names are lowercased by Node.js http parser\n const mcpMethodHeader = req.headers['mcp-method'] as string | undefined;\n\n const errors: string[] = [];\n if (!mcpMethodHeader) {\n errors.push(\n `Missing Mcp-Method header on ${method} request. Clients MUST include the Mcp-Method header on all POST requests.`\n );\n } else if (mcpMethodHeader !== method) {\n // Header values are case-sensitive\n errors.push(\n `Mcp-Method header value '${mcpMethodHeader}' does not match body method '${method}'. Header values are case-sensitive.`\n );\n }\n\n this.methodHeaderChecks.set(method, errors.length === 0);\n\n this.checks.push({\n id: 'sep-2243-client-includes-standard-headers',\n name: `ClientMcpMethodHeader_${method.replace(/\\//g, '_')}`,\n description: `Client sends correct Mcp-Method header on ${method} request`,\n status: errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: errors.length > 0 ? errors.join('; ') : undefined,\n specReferences: [SPEC_REFERENCE],\n details: {\n expectedMethod: method,\n actualHeader: mcpMethodHeader\n }\n });\n }\n\n private checkMcpNameHeader(\n req: http.IncomingMessage,\n request: any,\n sourceField: string\n ): void {\n const method = request.method;\n\n // Same de-dup guard as checkMcpMethodHeader: the harness advertises two\n // tools and two resources, so a client that calls both would otherwise\n // produce duplicate check rows for the same id.\n if (this.nameHeaderChecks.has(method)) return;\n\n const expectedValue =\n sourceField === 'params.uri' ? request.params?.uri : request.params?.name;\n\n const mcpNameHeader = req.headers['mcp-name'] as string | undefined;\n\n const errors: string[] = [];\n if (!mcpNameHeader) {\n errors.push(\n `Missing Mcp-Name header on ${method} request. Clients MUST include the Mcp-Name header for ${method} requests.`\n );\n } else if (mcpNameHeader !== expectedValue) {\n errors.push(\n `Mcp-Name header value '${mcpNameHeader}' does not match body ${sourceField} '${expectedValue}'.`\n );\n }\n\n this.nameHeaderChecks.set(method, errors.length === 0);\n\n this.checks.push({\n id: 'sep-2243-client-includes-standard-headers',\n name: `ClientMcpNameHeader_${method.replace(/\\//g, '_')}`,\n description: `Client sends correct Mcp-Name header on ${method} request`,\n status: errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: errors.length > 0 ? errors.join('; ') : undefined,\n specReferences: [SPEC_REFERENCE],\n details: {\n method,\n sourceField,\n expectedValue,\n actualHeader: mcpNameHeader\n }\n });\n }\n\n private handleInitialize(res: http.ServerResponse, request: any): void {\n this.sendInitialize(res, request, {\n tools: {},\n resources: {},\n prompts: {}\n });\n }\n\n private handleToolsList(res: http.ServerResponse, request: any): void {\n res.writeHead(200, {\n 'Content-Type': 'application/json',\n 'mcp-session-id': this.sessionId\n });\n\n res.end(\n JSON.stringify({\n jsonrpc: '2.0',\n id: request.id,\n result: {\n tools: [\n {\n name: 'test_headers',\n description:\n 'A simple tool used to test that HTTP headers are sent correctly',\n inputSchema: {\n type: 'object',\n properties: {},\n required: []\n }\n },\n {\n name: 'my-hyphenated-tool',\n description:\n 'Tool with hyphen in name to test special chars in Mcp-Name header',\n inputSchema: {\n type: 'object',\n properties: {},\n required: []\n }\n }\n ]\n }\n })\n );\n }\n\n private handleToolsCall(res: http.ServerResponse, request: any): void {\n res.writeHead(200, {\n 'Content-Type': 'application/json',\n 'mcp-session-id': this.sessionId\n });\n\n res.end(\n JSON.stringify({\n jsonrpc: '2.0',\n id: request.id,\n result: {\n content: [\n {\n type: 'text',\n text: 'Headers test completed'\n }\n ]\n }\n })\n );\n }\n\n private handleResourcesList(res: http.ServerResponse, request: any): void {\n res.writeHead(200, {\n 'Content-Type': 'application/json',\n 'mcp-session-id': this.sessionId\n });\n\n res.end(\n JSON.stringify({\n jsonrpc: '2.0',\n id: request.id,\n result: {\n resources: [\n {\n uri: 'file:///path/to/file%20name.txt',\n name: 'File with spaces',\n description: 'Resource URI with percent-encoded spaces'\n },\n {\n uri: 'https://example.com/resource?id=123',\n name: 'Resource with query string',\n description: 'Resource URI with query string'\n }\n ]\n }\n })\n );\n }\n\n private handleResourcesRead(res: http.ServerResponse, request: any): void {\n res.writeHead(200, {\n 'Content-Type': 'application/json',\n 'mcp-session-id': this.sessionId\n });\n\n res.end(\n JSON.stringify({\n jsonrpc: '2.0',\n id: request.id,\n result: {\n contents: []\n }\n })\n );\n }\n\n private handlePromptsList(res: http.ServerResponse, request: any): void {\n res.writeHead(200, {\n 'Content-Type': 'application/json',\n 'mcp-session-id': this.sessionId\n });\n\n res.end(\n JSON.stringify({\n jsonrpc: '2.0',\n id: request.id,\n result: {\n prompts: [\n {\n name: 'test_prompt',\n description: 'A simple prompt for header testing'\n }\n ]\n }\n })\n );\n }\n\n private handlePromptsGet(res: http.ServerResponse, request: any): void {\n res.writeHead(200, {\n 'Content-Type': 'application/json',\n 'mcp-session-id': this.sessionId\n });\n\n res.end(\n JSON.stringify({\n jsonrpc: '2.0',\n id: request.id,\n result: {\n messages: []\n }\n })\n );\n }\n}\n",[],[128,233,365,317],"6bbc96f7-5f8a-43d1-9cc6-2dcd316cea98","http-custom-headers.ts","d5a72d4c-ad13-11f1-a612-1607ee4eb77e",12,["D",1789043612496],"/**\n * HTTP Custom Headers conformance test scenario for MCP clients (SEP-2243)\n *\n * Tests that clients correctly handle the `x-mcp-header` extension property:\n * 1. Mirror annotated tool parameter values into `Mcp-Param-{Name}` headers\n * 2. Apply correct value encoding (plain ASCII, Base64 for non-ASCII)\n * 3. Reject tool definitions with invalid `x-mcp-header` annotations\n *\n * This is a Scenario (acts as a test server that inspects incoming requests\n * from the client under test).\n */\n\nimport http from 'node:http';\nimport { ScenarioUrls, ConformanceCheck } from '../../types.ts';\nimport { BaseHttpScenario } from './http-base.ts';\n\nconst SPEC_REFERENCE_CUSTOM = {\n id: 'SEP-2243-Custom-Headers',\n url: 'https://modelcontextprotocol.io/specification/draft/basic/transports#custom-headers-from-tool-parameters'\n};\n\nconst SPEC_REFERENCE_ENCODING = {\n id: 'SEP-2243-Value-Encoding',\n url: 'https://modelcontextprotocol.io/specification/draft/basic/transports#value-encoding'\n};\n\nconst SPEC_REFERENCE_TOOL_DEF = {\n id: 'SEP-2243-x-mcp-header',\n url: 'https://modelcontextprotocol.io/specification/draft/server/tools#x-mcp-header'\n};\n\n/**\n * Every requirement-level check ID HttpCustomHeadersScenario can emit\n * (SEP-2243). Declared-but-unemitted checks are backfilled as FAILURE by\n * getChecks() — same pattern as request-metadata.ts — so the emitted ID set\n * is stable for traceability even when the client never exercises the\n * feature.\n */\nexport const CUSTOM_HEADERS_DECLARED_CHECK_IDS = [\n 'sep-2243-client-supports-custom-headers',\n 'sep-2243-client-mirrors-designated-params',\n 'sep-2243-client-encode-values',\n 'sep-2243-client-base64-unsafe',\n 'sep-2243-client-omit-null'\n] as const;\n\n/**\n * Every requirement-level check ID HttpInvalidToolHeadersScenario can emit\n * (SEP-2243).\n */\nexport const INVALID_TOOL_DECLARED_CHECK_IDS = [\n 'sep-2243-client-reject-invalid-tool',\n 'sep-2243-x-mcp-header-not-empty',\n 'sep-2243-x-mcp-header-charset',\n 'sep-2243-x-mcp-header-unique',\n 'sep-2243-x-mcp-header-primitive-only'\n] as const;\n\n/**\n * Invalid tool definitions served by HttpInvalidToolHeadersScenario, keyed by\n * tool name, mapped to the SEP-2243 x-mcp-header constraint each one\n * violates. The check for \"client did not call this tool\" is emitted under\n * the constraint's requirement ID so each constraint traces to a check.\n */\nconst INVALID_TOOL_CONSTRAINT_IDS: Record = {\n invalid_empty_header: 'sep-2243-x-mcp-header-not-empty',\n invalid_object_header: 'sep-2243-x-mcp-header-primitive-only',\n invalid_array_header: 'sep-2243-x-mcp-header-primitive-only',\n invalid_null_header: 'sep-2243-x-mcp-header-primitive-only',\n invalid_duplicate_same_case: 'sep-2243-x-mcp-header-unique',\n invalid_duplicate_diff_case: 'sep-2243-x-mcp-header-unique',\n invalid_space_in_name: 'sep-2243-x-mcp-header-charset',\n invalid_colon_in_name: 'sep-2243-x-mcp-header-charset',\n invalid_non_ascii_name: 'sep-2243-x-mcp-header-charset',\n invalid_control_char_name: 'sep-2243-x-mcp-header-charset'\n};\n\n/**\n * Decodes a header value that may be Base64-encoded.\n * Base64-encoded values use the format: =?base64?{Base64EncodedValue}?=\n */\nfunction decodeHeaderValue(value: string): string {\n const base64Match = value.match(/^=\\?base64\\?(.*)\\?=$/);\n if (base64Match) {\n return Buffer.from(base64Match[1], 'base64').toString('utf-8');\n }\n return value;\n}\n\n/**\n * Check if a value needs Base64 encoding per the spec:\n * - Non-ASCII characters\n * - Control characters\n * - Leading/trailing whitespace\n */\nfunction needsBase64Encoding(value: string): boolean {\n // Check for non-ASCII or control characters\n for (let i = 0; i < value.length; i++) {\n const code = value.charCodeAt(i);\n if (code < 0x20 || code > 0x7e) {\n // Allow space (0x20) and tab (0x09) only inside values, not at edges\n if (code === 0x09) return true; // tab always needs encoding\n if (code < 0x20) return true; // other control chars\n if (code > 0x7e) return true; // non-ASCII\n }\n }\n // Check for leading/trailing whitespace\n if (value !== value.trim()) return true;\n return false;\n}\n\n/**\n * Checks if a raw header value is properly encoded for a body value that\n * needs Base64 encoding. Returns null if valid, error string if invalid.\n */\nfunction validateEncodedHeader(\n rawHeader: string,\n bodyValue: string,\n valueType?: string\n): string | null {\n if (needsBase64Encoding(bodyValue)) {\n // Value requires Base64 encoding\n const base64Match = rawHeader.match(/^=\\?base64\\?(.*)\\?=$/);\n\n if (!base64Match) {\n return `Value '${bodyValue}' requires Base64 encoding but header was sent as plain: '${rawHeader}'`;\n }\n const decoded = Buffer.from(base64Match[1], 'base64').toString('utf-8');\n if (valueType === 'number') {\n return compareNumericValues(decoded, bodyValue);\n }\n if (decoded !== bodyValue) {\n return `Base64-decoded header value '${decoded}' does not match body value '${bodyValue}'`;\n }\n return null;\n }\n // Plain ASCII - compare directly (after decoding if Base64 was used)\n const decoded = decodeHeaderValue(rawHeader);\n if (valueType === 'number') {\n return compareNumericValues(decoded, bodyValue);\n }\n if (decoded !== bodyValue) {\n return `Header value '${decoded}' (raw: '${rawHeader}') does not match body value '${bodyValue}'`;\n }\n return null;\n}\n\n/**\n * Compare two string representations of numbers numerically.\n * For integers, requires exact match. For decimals, allows\n * a tolerance of 1e-9 to account for cross-SDK floating point\n * representation differences.\n */\nfunction compareNumericValues(\n headerValue: string,\n bodyValue: string\n): string | null {\n const headerNum = Number(headerValue);\n const bodyNum = Number(bodyValue);\n if (isNaN(headerNum) || isNaN(bodyNum)) {\n return `Non-numeric value in number comparison: header='${headerValue}', body='${bodyValue}'`;\n }\n if (Number.isInteger(bodyNum)) {\n // Integer: require exact numeric match (e.g. 42 === 42.0)\n if (headerNum !== bodyNum) {\n return `Numeric header value ${headerNum} does not match body value ${bodyNum}`;\n }\n } else {\n // Decimal: allow tolerance of 1e-9\n if (Math.abs(headerNum - bodyNum) > 1e-9) {\n return `Numeric header value ${headerNum} does not match body value ${bodyNum} (difference ${Math.abs(headerNum - bodyNum)} exceeds tolerance 1e-9)`;\n }\n }\n return null;\n}\n\n// ─────────────────────────────────────────────────────────────────────────────\n// HttpCustomHeadersScenario - tests that clients mirror x-mcp-header params\n// ─────────────────────────────────────────────────────────────────────────────\n\nexport class HttpCustomHeadersScenario extends BaseHttpScenario {\n name = 'http-custom-headers';\n description =\n 'Tests that client mirrors x-mcp-header tool parameters into Mcp-Param headers with correct encoding (SEP-2243)';\n\n private toolCallReceived: boolean = false;\n private nullToolCallReceived: boolean = false;\n\n async start(): Promise {\n const urls = await super.start();\n // Pass test values via context for encoding edge cases.\n // The conformance client should use these values when calling test_custom_headers.\n urls.context = {\n toolCalls: [\n {\n name: 'test_custom_headers',\n arguments: {\n region: 'us-west1',\n priority: 42,\n verbose: false,\n debug: true,\n empty_val: '',\n method_val: 'test-method',\n float_val: 3.14159,\n non_ascii_val: 'Hello, 世界',\n whitespace_val: ' padded ',\n leading_space_val: ' us-west1',\n trailing_space_val: 'us-west1 ',\n internal_space_val: 'us west 1',\n control_char_val: 'line1\\nline2',\n crlf_val: 'line1\\r\\nline2',\n tab_val: '\\tindented',\n query: 'SELECT * FROM users'\n }\n },\n {\n name: 'test_custom_headers_null',\n arguments: {\n region: 'us-east1',\n priority: 1,\n verbose: null,\n query: 'SELECT 1'\n }\n }\n ]\n };\n return urls;\n }\n\n getChecks(): ConformanceCheck[] {\n // Declared-but-unemitted -> FAILURE (request-metadata.ts pattern). Keeps\n // the emitted ID set stable for traceability even when the client never\n // calls the annotated tools. The `some()` guard makes this idempotent.\n for (const id of CUSTOM_HEADERS_DECLARED_CHECK_IDS) {\n if (this.checks.some((c) => c.id === id)) continue;\n const missingNullCall =\n id === 'sep-2243-client-omit-null' && !this.nullToolCallReceived;\n this.checks.push({\n id,\n name: 'NotObserved',\n description: `Declared check ${id} was never emitted`,\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: missingNullCall\n ? 'Client did not send a tools/call request for test_custom_headers_null to test null/omitted parameter handling.'\n : this.toolCallReceived\n ? 'Check was not observed: no tool call exercised it.'\n : 'Client did not send a tools/call request for test_custom_headers.',\n specReferences: [SPEC_REFERENCE_CUSTOM]\n });\n }\n return this.checks;\n }\n\n protected handlePost(\n req: http.IncomingMessage,\n res: http.ServerResponse,\n request: any\n ): void {\n if (request.method === 'initialize') {\n this.sendInitialize(res, request);\n } else if (request.method === 'tools/list') {\n this.handleToolsList(res, request);\n } else if (request.method === 'tools/call') {\n this.handleToolsCall(req, res, request);\n } else if (request.id === undefined) {\n this.sendNotificationAck(res);\n } else {\n this.sendGenericResult(res, request);\n }\n }\n\n private handleToolsList(res: http.ServerResponse, request: any): void {\n this.sendJson(res, {\n jsonrpc: '2.0',\n id: request.id,\n result: {\n tools: [\n {\n name: 'test_custom_headers',\n description:\n 'A tool with x-mcp-header annotations to test custom header mirroring and encoding',\n inputSchema: {\n type: 'object',\n properties: {\n region: {\n type: 'string',\n description: 'Plain ASCII string value',\n 'x-mcp-header': 'Region'\n },\n priority: {\n type: 'number',\n description: 'Integer numeric value',\n 'x-mcp-header': 'Priority'\n },\n verbose: {\n type: 'boolean',\n description: 'Boolean value',\n 'x-mcp-header': 'Verbose'\n },\n debug: {\n type: 'boolean',\n description: 'Boolean true value',\n 'x-mcp-header': 'Debug'\n },\n empty_val: {\n type: 'string',\n description: 'Empty string value',\n 'x-mcp-header': 'EmptyVal'\n },\n method_val: {\n type: 'string',\n description:\n 'Value for header named \"Method\" — tests that x-mcp-header \"Method\" produces Mcp-Param-Method (not Mcp-Method)',\n 'x-mcp-header': 'Method'\n },\n float_val: {\n type: 'number',\n description: 'Floating point numeric value',\n 'x-mcp-header': 'FloatVal'\n },\n non_ascii_val: {\n type: 'string',\n description:\n 'Non-ASCII string value — requires Base64 encoding',\n 'x-mcp-header': 'NonAscii'\n },\n whitespace_val: {\n type: 'string',\n description:\n 'String with leading/trailing whitespace — requires Base64 encoding',\n 'x-mcp-header': 'Whitespace'\n },\n leading_space_val: {\n type: 'string',\n description:\n 'String with leading space only — requires Base64 encoding',\n 'x-mcp-header': 'LeadingSpace'\n },\n trailing_space_val: {\n type: 'string',\n description:\n 'String with trailing space only — requires Base64 encoding',\n 'x-mcp-header': 'TrailingSpace'\n },\n internal_space_val: {\n type: 'string',\n description:\n 'String with internal spaces only — plain ASCII, no Base64',\n 'x-mcp-header': 'InternalSpace'\n },\n control_char_val: {\n type: 'string',\n description:\n 'String with control characters — requires Base64 encoding',\n 'x-mcp-header': 'ControlChar'\n },\n crlf_val: {\n type: 'string',\n description:\n 'String with carriage return and line feed — requires Base64 encoding',\n 'x-mcp-header': 'CrLf'\n },\n tab_val: {\n type: 'string',\n description:\n 'String with leading tab — requires Base64 encoding',\n 'x-mcp-header': 'Tab'\n },\n query: {\n type: 'string',\n description:\n 'No x-mcp-header annotation - should not be mirrored'\n }\n },\n required: ['region', 'priority', 'query']\n }\n },\n {\n name: 'test_custom_headers_null',\n description:\n 'A tool for testing null/omitted x-mcp-header parameter handling',\n inputSchema: {\n type: 'object',\n properties: {\n region: {\n type: 'string',\n description: 'Plain ASCII string value',\n 'x-mcp-header': 'Region'\n },\n priority: {\n type: 'number',\n description: 'Integer numeric value',\n 'x-mcp-header': 'Priority'\n },\n verbose: {\n type: 'boolean',\n description: 'Boolean value — will be null to test omission',\n 'x-mcp-header': 'Verbose'\n },\n query: {\n type: 'string',\n description: 'No x-mcp-header annotation'\n }\n },\n required: ['region', 'priority', 'query']\n }\n }\n ]\n }\n });\n }\n\n private handleToolsCall(\n req: http.IncomingMessage,\n res: http.ServerResponse,\n request: any\n ): void {\n const toolName = request.params?.name;\n const args = request.params?.arguments || {};\n\n if (toolName === 'test_custom_headers') {\n this.toolCallReceived = true;\n\n // SEP-2243 \"MCP clients MUST support this feature\": observable as the\n // client calling the annotated tool with at least one mirrored\n // Mcp-Param-* header. The per-parameter checks below then validate each\n // mirrored value individually.\n const hasAnyParamHeader = Object.keys(req.headers).some((h) =>\n h.startsWith('mcp-param-')\n );\n this.checks.push({\n id: 'sep-2243-client-supports-custom-headers',\n name: 'ClientSupportsCustomHeaders',\n description:\n 'Client supports custom headers: calls the x-mcp-header annotated tool and mirrors at least one parameter',\n status: hasAnyParamHeader ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: hasAnyParamHeader\n ? undefined\n : 'Client called test_custom_headers but sent no Mcp-Param-* headers.',\n specReferences: [SPEC_REFERENCE_CUSTOM]\n });\n\n // Check Mcp-Param-Region header (plain ASCII string)\n this.checkParamHeader(req, 'Region', args.region, 'string');\n\n // Check Mcp-Param-Priority header (integer number)\n this.checkParamHeader(req, 'Priority', args.priority, 'number');\n\n // Check Mcp-Param-Verbose header (boolean value)\n // checkParamHeader already FAILs on missing header, so this also covers\n // \"optional parameter present → client MUST include header\" without a\n // separate check id.\n if (args.verbose !== undefined && args.verbose !== null) {\n this.checkParamHeader(req, 'Verbose', args.verbose, 'boolean');\n }\n\n // Check Mcp-Param-Debug header (boolean true value)\n if (args.debug !== undefined && args.debug !== null) {\n this.checkParamHeader(req, 'Debug', args.debug, 'boolean');\n }\n\n // Check Mcp-Param-EmptyVal header (empty string → empty header value)\n if (args.empty_val !== undefined && args.empty_val !== null) {\n this.checkParamHeader(req, 'EmptyVal', args.empty_val, 'string');\n }\n\n // Check Mcp-Param-Method header (x-mcp-header \"Method\" → Mcp-Param-Method, NOT Mcp-Method)\n if (args.method_val !== undefined && args.method_val !== null) {\n this.checkParamHeader(req, 'Method', args.method_val, 'string');\n }\n\n // Check Mcp-Param-FloatVal header (floating point number)\n if (args.float_val !== undefined && args.float_val !== null) {\n this.checkParamHeader(req, 'FloatVal', args.float_val, 'number');\n }\n\n // Check Mcp-Param-NonAscii header (requires Base64 encoding)\n if (args.non_ascii_val !== undefined && args.non_ascii_val !== null) {\n this.checkParamHeader(req, 'NonAscii', args.non_ascii_val, 'string');\n }\n\n // Check Mcp-Param-Whitespace header (leading/trailing whitespace → Base64)\n if (args.whitespace_val !== undefined && args.whitespace_val !== null) {\n this.checkParamHeader(req, 'Whitespace', args.whitespace_val, 'string');\n }\n\n // Check Mcp-Param-LeadingSpace header (leading space only → Base64)\n if (\n args.leading_space_val !== undefined &&\n args.leading_space_val !== null\n ) {\n this.checkParamHeader(\n req,\n 'LeadingSpace',\n args.leading_space_val,\n 'string'\n );\n }\n\n // Check Mcp-Param-TrailingSpace header (trailing space only → Base64)\n if (\n args.trailing_space_val !== undefined &&\n args.trailing_space_val !== null\n ) {\n this.checkParamHeader(\n req,\n 'TrailingSpace',\n args.trailing_space_val,\n 'string'\n );\n }\n\n // Check Mcp-Param-InternalSpace header (internal spaces only → plain ASCII, no Base64)\n if (\n args.internal_space_val !== undefined &&\n args.internal_space_val !== null\n ) {\n this.checkParamHeader(\n req,\n 'InternalSpace',\n args.internal_space_val,\n 'string'\n );\n }\n\n // Check Mcp-Param-ControlChar header (control characters → Base64)\n if (\n args.control_char_val !== undefined &&\n args.control_char_val !== null\n ) {\n this.checkParamHeader(\n req,\n 'ControlChar',\n args.control_char_val,\n 'string'\n );\n }\n\n // Check Mcp-Param-CrLf header (carriage return + line feed → Base64)\n if (args.crlf_val !== undefined && args.crlf_val !== null) {\n this.checkParamHeader(req, 'CrLf', args.crlf_val, 'string');\n }\n\n // Check Mcp-Param-Tab header (leading tab → Base64)\n if (args.tab_val !== undefined && args.tab_val !== null) {\n this.checkParamHeader(req, 'Tab', args.tab_val, 'string');\n }\n\n // Check that 'query' (no x-mcp-header) is NOT mirrored — the negative\n // half of \"mirror the *designated* parameter values\".\n const queryHeader = req.headers['mcp-param-query'] as string | undefined;\n this.checks.push({\n id: 'sep-2243-client-mirrors-designated-params',\n name: 'ClientCustomHeaderNoMirrorUnannotated',\n description:\n 'Client MUST NOT add Mcp-Param headers for parameters without x-mcp-header',\n status: queryHeader === undefined ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage:\n queryHeader !== undefined\n ? `Found unexpected Mcp-Param-Query header '${queryHeader}' for unannotated parameter`\n : undefined,\n specReferences: [SPEC_REFERENCE_CUSTOM]\n });\n } else if (toolName === 'test_custom_headers_null') {\n this.nullToolCallReceived = true;\n\n // When value is null or not provided, client MUST omit the header\n const verboseHeader = req.headers['mcp-param-verbose'] as\n | string\n | undefined;\n this.checks.push({\n id: 'sep-2243-client-omit-null',\n name: 'ClientCustomHeaderOmitNull',\n description:\n 'Client MUST omit Mcp-Param header when parameter value is null or not provided',\n status: verboseHeader === undefined ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage:\n verboseHeader !== undefined\n ? `Mcp-Param-Verbose should be omitted when null/undefined, but got '${verboseHeader}'`\n : undefined,\n specReferences: [SPEC_REFERENCE_CUSTOM]\n });\n }\n\n this.sendJson(res, {\n jsonrpc: '2.0',\n id: request.id,\n result: {\n content: [{ type: 'text', text: 'Custom headers test completed' }]\n }\n });\n }\n\n private checkParamHeader(\n req: http.IncomingMessage,\n headerName: string,\n bodyValue: any,\n valueType: string\n ): void {\n const headerKey = `mcp-param-${headerName.toLowerCase()}`;\n const rawHeaderValue = req.headers[headerKey] as string | undefined;\n\n if (bodyValue === undefined || bodyValue === null) return;\n\n const errors: string[] = [];\n\n if (rawHeaderValue === undefined) {\n errors.push(\n `Missing Mcp-Param-${headerName} header. Client MUST include headers for x-mcp-header parameters.`\n );\n } else {\n // Convert body value to expected string representation\n let expectedString: string;\n switch (valueType) {\n case 'number':\n expectedString = String(bodyValue);\n break;\n case 'boolean':\n expectedString = bodyValue ? 'true' : 'false';\n break;\n default:\n expectedString = String(bodyValue);\n }\n\n // For numbers, compare numerically to allow for cross-SDK\n // floating point representation differences (e.g., \"42\" vs \"42.0\").\n // See SEP-2243 discussion on number precision.\n const validationError = validateEncodedHeader(\n rawHeaderValue,\n expectedString,\n valueType\n );\n if (validationError) {\n errors.push(validationError);\n }\n }\n\n // One check ID per SEP-2243 requirement, picked by what this parameter\n // actually exercises: Base64 wrapping for unsafe values, primitive\n // (number/boolean) string encoding, or plain mirroring. The per-parameter\n // detail lives in `name`/`details`.\n const needsBase64 =\n typeof bodyValue === 'string' && needsBase64Encoding(String(bodyValue));\n const checkId = needsBase64\n ? 'sep-2243-client-base64-unsafe'\n : valueType === 'number' || valueType === 'boolean'\n ? 'sep-2243-client-encode-values'\n : 'sep-2243-client-mirrors-designated-params';\n\n this.checks.push({\n id: checkId,\n name: `ClientCustomHeader_${headerName}`,\n description: `Client sends correct Mcp-Param-${headerName} header (${valueType} value)`,\n status: errors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: errors.length > 0 ? errors.join('; ') : undefined,\n specReferences: [SPEC_REFERENCE_ENCODING],\n details: {\n headerName: `Mcp-Param-${headerName}`,\n rawHeaderValue,\n bodyValue,\n valueType,\n needsBase64\n }\n });\n }\n}\n\n// ─────────────────────────────────────────────────────────────────────────────\n// HttpInvalidToolHeadersScenario - tests that clients reject invalid tools\n// ─────────────────────────────────────────────────────────────────────────────\n\nexport class HttpInvalidToolHeadersScenario extends BaseHttpScenario {\n name = 'http-invalid-tool-headers';\n description =\n 'Tests that client rejects tools with invalid x-mcp-header annotations (SEP-2243)';\n allowClientError = true;\n\n private calledTools: Set = new Set();\n private toolsListSent = false;\n\n getChecks(): ConformanceCheck[] {\n if (!this.toolsListSent) {\n this.checks.push({\n id: 'sep-2243-invalid-tool-tools-list-gate',\n name: 'ClientInvalidToolHeadersToolsList',\n description: 'Client requests tools/list',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: 'Client did not send a tools/list request.',\n specReferences: [SPEC_REFERENCE_TOOL_DEF]\n });\n }\n\n // Check that valid_tool WAS called — proves client kept valid tools\n const validToolCalled = this.calledTools.has('valid_tool');\n this.checks.push({\n id: 'sep-2243-client-reject-invalid-tool',\n name: 'ClientKeepsValidTool',\n description: 'Client MUST keep valid tools while excluding invalid ones',\n status: validToolCalled ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: validToolCalled\n ? undefined\n : \"Client did not call 'valid_tool'. A single malformed tool definition must not prevent other valid tools from being used.\",\n specReferences: [SPEC_REFERENCE_TOOL_DEF]\n });\n\n // Check that the client did NOT call any of the invalid tools. Each\n // invalid tool violates one specific x-mcp-header constraint, so the\n // check is emitted under that constraint's requirement ID — the client\n // rejecting the tool is how the constraint is enforced on the wire.\n for (const [toolName, constraintId] of Object.entries(\n INVALID_TOOL_CONSTRAINT_IDS\n )) {\n const called = this.calledTools.has(toolName);\n this.checks.push({\n id: constraintId,\n name: `ClientRejectsInvalidTool_${toolName}`,\n description: `Client MUST NOT call tool '${toolName}' with invalid x-mcp-header`,\n status: called ? 'FAILURE' : 'SUCCESS',\n timestamp: new Date().toISOString(),\n errorMessage: called\n ? `Client called '${toolName}' which has an invalid x-mcp-header. Clients MUST reject (exclude) such tools.`\n : undefined,\n specReferences: [SPEC_REFERENCE_TOOL_DEF]\n });\n }\n\n return this.checks;\n }\n\n protected handlePost(\n _req: http.IncomingMessage,\n res: http.ServerResponse,\n request: any\n ): void {\n if (request.method === 'initialize') {\n this.sendInitialize(res, request);\n } else if (request.method === 'tools/list') {\n this.handleToolsList(res, request);\n } else if (request.method === 'tools/call') {\n this.handleToolsCall(res, request);\n } else if (request.id === undefined) {\n this.sendNotificationAck(res);\n } else {\n this.sendGenericResult(res, request);\n }\n }\n\n private handleToolsList(res: http.ServerResponse, request: any): void {\n this.toolsListSent = true;\n\n this.sendJson(res, {\n jsonrpc: '2.0',\n id: request.id,\n result: {\n tools: [\n // ── Valid tool (should be kept by client) ──\n {\n name: 'valid_tool',\n description: 'A valid tool with correct x-mcp-header',\n inputSchema: {\n type: 'object',\n properties: {\n region: {\n type: 'string',\n 'x-mcp-header': 'Region'\n }\n },\n required: ['region']\n }\n },\n\n // ── Invalid: empty x-mcp-header value ──\n {\n name: 'invalid_empty_header',\n description:\n 'x-mcp-header MUST NOT be empty (MUST be rejected by client)',\n inputSchema: {\n type: 'object',\n properties: {\n value: { type: 'string', 'x-mcp-header': '' }\n },\n required: ['value']\n }\n },\n\n // ── Invalid: x-mcp-header on object type ──\n {\n name: 'invalid_object_header',\n description:\n 'x-mcp-header MUST only be on primitive types (MUST be rejected)',\n inputSchema: {\n type: 'object',\n properties: {\n data: { type: 'object', 'x-mcp-header': 'Data' }\n },\n required: ['data']\n }\n },\n\n // ── Invalid: x-mcp-header on array type ──\n {\n name: 'invalid_array_header',\n description:\n 'x-mcp-header MUST only be on primitive types (MUST be rejected)',\n inputSchema: {\n type: 'object',\n properties: {\n items: {\n type: 'array',\n items: { type: 'string' },\n 'x-mcp-header': 'Items'\n }\n },\n required: ['items']\n }\n },\n\n // ── Invalid: x-mcp-header on null type ──\n {\n name: 'invalid_null_header',\n description:\n 'x-mcp-header MUST only be on primitive types (MUST be rejected)',\n inputSchema: {\n type: 'object',\n properties: {\n nil: { type: 'null', 'x-mcp-header': 'Nil' }\n },\n required: ['nil']\n }\n },\n\n // ── Invalid: duplicate same-case x-mcp-header values ──\n {\n name: 'invalid_duplicate_same_case',\n description:\n 'Duplicate x-mcp-header \"Region\" on two properties (MUST be rejected)',\n inputSchema: {\n type: 'object',\n properties: {\n field1: { type: 'string', 'x-mcp-header': 'Region' },\n field2: { type: 'string', 'x-mcp-header': 'Region' }\n },\n required: ['field1', 'field2']\n }\n },\n\n // ── Invalid: duplicate case-insensitive x-mcp-header values ──\n {\n name: 'invalid_duplicate_diff_case',\n description:\n 'Duplicate case-insensitive x-mcp-header \"MyField\"/\"myfield\" (MUST be rejected)',\n inputSchema: {\n type: 'object',\n properties: {\n field1: { type: 'string', 'x-mcp-header': 'MyField' },\n field2: { type: 'string', 'x-mcp-header': 'myfield' }\n },\n required: ['field1', 'field2']\n }\n },\n\n // ── Invalid: space in x-mcp-header name ──\n {\n name: 'invalid_space_in_name',\n description:\n 'x-mcp-header MUST NOT contain space (MUST be rejected)',\n inputSchema: {\n type: 'object',\n properties: {\n value: { type: 'string', 'x-mcp-header': 'My Region' }\n },\n required: ['value']\n }\n },\n\n // ── Invalid: colon in x-mcp-header name ──\n {\n name: 'invalid_colon_in_name',\n description:\n 'x-mcp-header MUST NOT contain colon (MUST be rejected)',\n inputSchema: {\n type: 'object',\n properties: {\n value: {\n type: 'string',\n 'x-mcp-header': 'Region:Primary'\n }\n },\n required: ['value']\n }\n },\n\n // ── Invalid: non-ASCII in x-mcp-header name ──\n {\n name: 'invalid_non_ascii_name',\n description:\n 'x-mcp-header MUST contain only ASCII chars (MUST be rejected)',\n inputSchema: {\n type: 'object',\n properties: {\n value: { type: 'string', 'x-mcp-header': 'Région' }\n },\n required: ['value']\n }\n },\n\n // ── Invalid: control character in x-mcp-header name ──\n {\n name: 'invalid_control_char_name',\n description:\n 'x-mcp-header MUST NOT contain control chars (MUST be rejected)',\n inputSchema: {\n type: 'object',\n properties: {\n value: { type: 'string', 'x-mcp-header': 'Region\\t1' }\n },\n required: ['value']\n }\n }\n ]\n }\n });\n }\n\n private handleToolsCall(res: http.ServerResponse, request: any): void {\n const toolName = request.params?.name;\n if (toolName) this.calledTools.add(toolName);\n\n this.sendJson(res, {\n jsonrpc: '2.0',\n id: request.id,\n result: {\n content: [{ type: 'text', text: 'Tool call received' }]\n }\n });\n }\n}\n",[],[128,233,365,414],"106d2aa0-a885-4da2-b062-ae10682086fc","dd9c695e-ad13-11f1-986c-1607ee4eb77e",35,["D",1789043625906],"/**\n * SEP-1034: Elicitation defaults test\n * Validates that clients properly apply default values for omitted fields\n * in elicitation responses before sending them to the server\n */\n\nimport { Server } from 'npm:@modelcontextprotocol/sdk@^1.29.0/server/index.js';\nimport { StreamableHTTPServerTransport } from 'npm:@modelcontextprotocol/sdk@^1.29.0/server/streamableHttp.js';\nimport {\n CallToolRequestSchema,\n ListToolsRequestSchema,\n ElicitResultSchema\n} from 'npm:@modelcontextprotocol/sdk@^1.29.0/types.js';\nimport type { ConformanceCheck, RequestListener } from '../../types.ts';\nimport { HandlerScenario } from '../../types.ts';\nimport express, { Request, Response } from 'npm:express@^5.1.0';\nimport { createRequestLogger } from '../request-logger.ts';\nimport { randomUUID } from 'node:crypto';\n\nfunction isInitializeRequest(body: unknown): boolean {\n if (\n typeof body === 'object' &&\n body !== null &&\n 'method' in body &&\n (body as { method: string }).method === 'initialize'\n ) {\n return true;\n }\n return false;\n}\n\nfunction createServer(checks: ConformanceCheck[]): {\n app: express.Application;\n cleanup: () => void;\n} {\n // Session management\n const transports: { [sessionId: string]: StreamableHTTPServerTransport } = {};\n const servers: { [sessionId: string]: Server } = {};\n\n const createMcpServer = () => {\n const server = new Server(\n {\n name: 'elicitation-defaults-test-server',\n version: '1.0.0'\n },\n {\n capabilities: {\n tools: {}\n }\n }\n );\n\n server.setRequestHandler(ListToolsRequestSchema, async () => {\n return {\n tools: [\n {\n name: 'test_client_elicitation_defaults',\n description:\n 'Tests that client applies defaults for omitted elicitation fields',\n inputSchema: {\n type: 'object',\n properties: {},\n required: []\n }\n }\n ]\n };\n });\n\n server.setRequestHandler(CallToolRequestSchema, async (request) => {\n if (request.params.name === 'test_client_elicitation_defaults') {\n try {\n // Request elicitation with all optional fields having defaults\n // Using raw server.request() to verify client applies defaults before sending response\n const elicitResult = await server.request(\n {\n method: 'elicitation/create',\n params: {\n message:\n 'Test client default value handling - please accept with defaults',\n requestedSchema: {\n type: 'object',\n properties: {\n name: {\n type: 'string',\n description: 'User name',\n default: 'John Doe'\n },\n age: {\n type: 'integer',\n description: 'User age',\n default: 30\n },\n score: {\n type: 'number',\n description: 'User score',\n default: 95.5\n },\n status: {\n type: 'string',\n description: 'User status',\n enum: ['active', 'inactive', 'pending'],\n default: 'active'\n },\n verified: {\n type: 'boolean',\n description: 'Verification status',\n default: true\n }\n },\n required: [] // All fields optional, so defaults should apply\n }\n }\n },\n ElicitResultSchema\n );\n\n // Check if elicitation was accepted\n if (elicitResult.action !== 'accept') {\n checks.push({\n id: 'client-elicitation-sep1034-general',\n name: 'ClientElicitationSEP1034General',\n description: 'Client accepts elicitation request',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Expected action 'accept', got '${elicitResult.action}'`,\n specReferences: [\n {\n id: 'SEP-1034',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1034'\n }\n ]\n });\n return {\n content: [{ type: 'text', text: 'Elicitation was not accepted' }]\n };\n }\n\n const content = elicitResult.content || {};\n\n // Validate string default was applied\n const stringErrors: string[] = [];\n if (!('name' in content)) {\n stringErrors.push(\n 'Field \"name\" missing - should have default \"John Doe\"'\n );\n } else if (typeof content.name !== 'string') {\n stringErrors.push(\n `Expected string for \"name\", got ${typeof content.name}`\n );\n }\n\n checks.push({\n id: 'client-elicitation-sep1034-string-default',\n name: 'ClientElicitationSEP1034StringDefault',\n description: 'Client applies string default value for elicitation',\n status: stringErrors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage:\n stringErrors.length > 0 ? stringErrors.join('; ') : undefined,\n specReferences: [\n {\n id: 'SEP-1034',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1034'\n }\n ],\n details: {\n field: 'name',\n expectedDefault: 'John Doe',\n receivedValue: content.name\n }\n });\n\n // Validate integer default was applied\n const integerErrors: string[] = [];\n if (!('age' in content)) {\n integerErrors.push('Field \"age\" missing - should have default 30');\n } else if (typeof content.age !== 'number') {\n integerErrors.push(\n `Expected number for \"age\", got ${typeof content.age}`\n );\n }\n\n checks.push({\n id: 'client-elicitation-sep1034-integer-default',\n name: 'ClientElicitationSEP1034IntegerDefault',\n description: 'Client applies integer default value for elicitation',\n status: integerErrors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage:\n integerErrors.length > 0 ? integerErrors.join('; ') : undefined,\n specReferences: [\n {\n id: 'SEP-1034',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1034'\n }\n ],\n details: {\n field: 'age',\n expectedDefault: 30,\n receivedValue: content.age\n }\n });\n\n // Validate number default was applied\n const numberErrors: string[] = [];\n if (!('score' in content)) {\n numberErrors.push(\n 'Field \"score\" missing - should have default 95.5'\n );\n } else if (typeof content.score !== 'number') {\n numberErrors.push(\n `Expected number for \"score\", got ${typeof content.score}`\n );\n }\n\n checks.push({\n id: 'client-elicitation-sep1034-number-default',\n name: 'ClientElicitationSEP1034NumberDefault',\n description: 'Client applies number default value for elicitation',\n status: numberErrors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage:\n numberErrors.length > 0 ? numberErrors.join('; ') : undefined,\n specReferences: [\n {\n id: 'SEP-1034',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1034'\n }\n ],\n details: {\n field: 'score',\n expectedDefault: 95.5,\n receivedValue: content.score\n }\n });\n\n // Validate enum default was applied\n const enumErrors: string[] = [];\n if (!('status' in content)) {\n enumErrors.push(\n 'Field \"status\" missing - should have default \"active\"'\n );\n } else if (typeof content.status !== 'string') {\n enumErrors.push(\n `Expected string for \"status\", got ${typeof content.status}`\n );\n } else if (\n !['active', 'inactive', 'pending'].includes(content.status)\n ) {\n enumErrors.push(\n `Value \"${content.status}\" is not a valid enum member`\n );\n }\n\n checks.push({\n id: 'client-elicitation-sep1034-enum-default',\n name: 'ClientElicitationSEP1034EnumDefault',\n description: 'Client applies enum default value for elicitation',\n status: enumErrors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage:\n enumErrors.length > 0 ? enumErrors.join('; ') : undefined,\n specReferences: [\n {\n id: 'SEP-1034',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1034'\n }\n ],\n details: {\n field: 'status',\n expectedDefault: 'active',\n receivedValue: content.status\n }\n });\n\n // Validate boolean default was applied\n const booleanErrors: string[] = [];\n if (!('verified' in content)) {\n booleanErrors.push(\n 'Field \"verified\" missing - should have default true'\n );\n } else if (typeof content.verified !== 'boolean') {\n booleanErrors.push(\n `Expected boolean for \"verified\", got ${typeof content.verified}`\n );\n }\n\n checks.push({\n id: 'client-elicitation-sep1034-boolean-default',\n name: 'ClientElicitationSEP1034BooleanDefault',\n description: 'Client applies boolean default value for elicitation',\n status: booleanErrors.length === 0 ? 'SUCCESS' : 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage:\n booleanErrors.length > 0 ? booleanErrors.join('; ') : undefined,\n specReferences: [\n {\n id: 'SEP-1034',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1034'\n }\n ],\n details: {\n field: 'verified',\n expectedDefault: true,\n receivedValue: content.verified\n }\n });\n\n return {\n content: [\n {\n type: 'text',\n text: `Elicitation completed: ${JSON.stringify(content)}`\n }\n ]\n };\n } catch (error: any) {\n checks.push({\n id: 'client-elicitation-sep1034-general',\n name: 'ClientElicitationSEP1034General',\n description: 'Client handles elicitation with defaults',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n errorMessage: `Elicitation failed: ${error.message}`,\n specReferences: [\n {\n id: 'SEP-1034',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1034'\n }\n ]\n });\n\n return {\n content: [\n {\n type: 'text',\n text: `Elicitation error: ${error.message}`\n }\n ]\n };\n }\n }\n\n throw new Error(`Unknown tool: ${request.params.name}`);\n });\n\n return server;\n };\n\n const app = express();\n app.use(express.json());\n\n app.use(\n createRequestLogger(checks, {\n incomingId: 'incoming-request',\n outgoingId: 'outgoing-response',\n mcpRoute: '/mcp'\n })\n );\n\n // Handle POST requests - stateful mode\n app.post('/mcp', async (req: Request, res: Response) => {\n const sessionId = req.headers['mcp-session-id'] as string | undefined;\n\n try {\n let transport: StreamableHTTPServerTransport;\n\n if (sessionId && transports[sessionId]) {\n // Reuse existing transport for established sessions\n transport = transports[sessionId];\n } else if (!sessionId && isInitializeRequest(req.body)) {\n // Create new transport for initialization requests\n const mcpServer = createMcpServer();\n\n transport = new StreamableHTTPServerTransport({\n sessionIdGenerator: () => randomUUID(),\n onsessioninitialized: (newSessionId) => {\n transports[newSessionId] = transport;\n servers[newSessionId] = mcpServer;\n }\n });\n\n transport.onclose = () => {\n const sid = transport.sessionId;\n if (sid && transports[sid]) {\n delete transports[sid];\n if (servers[sid]) {\n servers[sid].close();\n delete servers[sid];\n }\n }\n };\n\n await mcpServer.connect(transport);\n await transport.handleRequest(req, res, req.body);\n return;\n } else {\n res.status(400).json({\n jsonrpc: '2.0',\n error: {\n code: -32000,\n message: 'Invalid or missing session ID'\n },\n id: null\n });\n return;\n }\n\n await transport.handleRequest(req, res, req.body);\n } catch {\n if (!res.headersSent) {\n res.status(500).json({\n jsonrpc: '2.0',\n error: {\n code: -32603,\n message: 'Internal server error'\n },\n id: null\n });\n }\n }\n });\n\n // Handle GET requests - SSE streams for sessions\n app.get('/mcp', async (req: Request, res: Response) => {\n const sessionId = req.headers['mcp-session-id'] as string | undefined;\n\n if (!sessionId || !transports[sessionId]) {\n res.status(400).send('Invalid or missing session ID');\n return;\n }\n\n try {\n const transport = transports[sessionId];\n await transport.handleRequest(req, res);\n } catch {\n if (!res.headersSent) {\n res.status(500).send('Error establishing SSE stream');\n }\n }\n });\n\n // Handle DELETE requests - session termination\n app.delete('/mcp', async (req: Request, res: Response) => {\n const sessionId = req.headers['mcp-session-id'] as string | undefined;\n\n if (!sessionId || !transports[sessionId]) {\n res.status(400).send('Invalid or missing session ID');\n return;\n }\n\n try {\n const transport = transports[sessionId];\n await transport.handleRequest(req, res);\n } catch {\n if (!res.headersSent) {\n res.status(500).send('Error handling termination');\n }\n }\n });\n\n const cleanup = () => {\n // Clean up all sessions\n for (const sessionId of Object.keys(transports)) {\n if (servers[sessionId]) {\n servers[sessionId].close();\n }\n }\n };\n\n return { app, cleanup };\n}\n\nexport class ElicitationClientDefaultsScenario extends HandlerScenario {\n name = 'elicitation-sep1034-client-defaults';\n readonly source = { introducedIn: '2025-11-25' } as const;\n description =\n 'Tests client applies default values for omitted elicitation fields (SEP-1034)';\n mcpPath = '/mcp';\n private checks: ConformanceCheck[] = [];\n private cleanup: (() => void) | null = null;\n\n handler(_getBaseUrl: () => string): RequestListener {\n this.checks = [];\n const { app, cleanup } = createServer(this.checks);\n this.cleanup = cleanup;\n return app;\n }\n\n async stop() {\n this.cleanup?.();\n this.cleanup = null;\n await super.stop();\n }\n\n /**\n * The tool call triggers elicitation/create; the interpreter's standing\n * default (accept with schema defaults) is exactly the behaviour under test.\n */\n readonly steps = [\n { op: 'tools/list' },\n {\n op: 'tools/call',\n name: 'test_client_elicitation_defaults',\n arguments: {}\n }\n ] as const;\n\n getChecks(): ConformanceCheck[] {\n const expectedSlugs = [\n 'client-elicitation-sep1034-string-default',\n 'client-elicitation-sep1034-integer-default',\n 'client-elicitation-sep1034-number-default',\n 'client-elicitation-sep1034-enum-default',\n 'client-elicitation-sep1034-boolean-default'\n ];\n\n // Add failures for any checks that weren't triggered (tool not called)\n for (const slug of expectedSlugs) {\n if (!this.checks.find((c) => c.id === slug)) {\n this.checks.push({\n id: slug,\n name: slug.replace(/-/g, ''),\n description: `Server applies ${slug.split('-')[4]} default for elicitation`,\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n details: { message: 'Tool was not called by client' },\n specReferences: [\n {\n id: 'SEP-1034',\n url: 'https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1034'\n }\n ]\n });\n }\n }\n return this.checks;\n }\n}\n",[],[128,233,365,333],"ae5adfaf-4175-4bcb-b0fa-e6b9db5bf7fc","auth-checker.ts","ddeaad80-ad13-11f1-8de9-1607ee4eb77e",36,["D",1789043626411],"/**\n * Auth checker — a stateless re-auth chain.\n *\n * One MCP server, three auth rungs. Each rung is reached by forcing the\n * client back through authorization under a DIFFERENT configuration, using\n * only the spec's own signals:\n *\n * rung 1 \"basic\" 401 challenge → PRM #1 → AS #1: PKCE S256 + DCR +\n * RFC 8707 resource indicator.\n * rung 2 \"scoped\" calling advance_to_scoped with a basic token → 401\n * whose WWW-Authenticate points at PRM #2 (different AS,\n * SEP-835: scope must be taken from scopes_supported).\n * rung 3 \"step-up\" calling advance_to_stepup with only conformance:read →\n * 403 insufficient_scope, scope=\"… conformance:write\"\n * (RFC 6750 step-up at the same AS).\n *\n * The access token IS the progress report: `ac.`, so\n * possession of a token with cfg=scoped and conformance:write proves the\n * client handled discovery, a challenge-driven AS switch, SEP-835 scope\n * selection, and 403 step-up — with zero server-side state. The final\n * auth_complete tool spells that out.\n *\n * Like the consent gate in checker-2026-07-28, the embedded ASs are\n * deliverers of specific challenge shapes, not auth conformance tests in\n * themselves — but unlike the consent gate they auto-redirect, so the whole\n * chain is automatable.\n */\n\nimport { Server } from 'npm:@modelcontextprotocol/sdk@^1.29.0/server/index.js';\nimport { StreamableHTTPServerTransport } from 'npm:@modelcontextprotocol/sdk@^1.29.0/server/streamableHttp.js';\nimport {\n CallToolRequestSchema,\n CallToolResult,\n ListToolsRequestSchema\n} from 'npm:@modelcontextprotocol/sdk@^1.29.0/types.js';\nimport express, { Request, Response } from 'npm:express@^5.1.0';\nimport { createHash } from 'node:crypto';\nimport type { ConformanceCheck } from '../../types.ts';\nimport { HandlerScenario } from '../../types.ts';\n\nconst SERVER_INFO = { name: 'mcp-checker-auth', version: '1.0.0' };\n\nconst SCOPE_READ = 'conformance:read';\nconst SCOPE_WRITE = 'conformance:write';\n\ntype Cfg = 'basic' | 'scoped' | 'isstrap';\n\ninterface TokenClaims {\n cfg: Cfg;\n scope: string;\n /** Set on tokens minted through the iss-mismatch trap — see rung 4. */\n trap?: string;\n}\n\nfunction mintToken(claims: TokenClaims): string {\n return `ac.${Buffer.from(JSON.stringify(claims)).toString('base64url')}`;\n}\n\nfunction parseToken(\n authorization: string | undefined\n): TokenClaims | undefined {\n const m = /^Bearer ac\\.([A-Za-z0-9_-]+)$/.exec(authorization ?? '');\n if (!m) return undefined;\n try {\n const claims = JSON.parse(Buffer.from(m[1], 'base64url').toString());\n if (!['basic', 'scoped', 'isstrap'].includes(claims.cfg)) return undefined;\n return {\n cfg: claims.cfg,\n scope: String(claims.scope ?? ''),\n ...(claims.trap ? { trap: String(claims.trap) } : {})\n };\n } catch {\n return undefined;\n }\n}\n\nconst hasScope = (t: TokenClaims, scope: string) =>\n t.scope.split(' ').includes(scope);\n\n/** What each successfully-reached rung proves about the client. */\nconst RUNG_PROOF: Record = {\n auth_status: 'you completed at least one full authorization flow',\n advance_to_scoped:\n 'your client handled a mid-session 401 whose WWW-Authenticate pointed ' +\n 'at a DIFFERENT resource_metadata, re-discovered, re-registered at the ' +\n 'second AS, and requested the scope advertised in scopes_supported ' +\n '(SEP-835)',\n advance_to_stepup:\n 'your client handled a 403 insufficient_scope challenge by ' +\n 're-authorizing with the broader scope from the challenge (RFC 6750 ' +\n 'step-up) while staying at the same AS',\n auth_complete:\n 'ALL AUTH RUNGS PASSED: initial discovery + PKCE S256 + DCR + RFC 8707 ' +\n 'resource indicator (rung 1), challenge-driven AS switch + SEP-835 ' +\n 'scope selection (rung 2), 403 insufficient_scope step-up (rung 3)'\n};\n\nconst TOOLS = [\n {\n name: 'auth_status',\n description:\n 'Reports which auth rung your current access token proves. Call this ' +\n 'first and after each advance.'\n },\n {\n name: 'advance_to_scoped',\n description:\n 'Rung 2 gate. With a rung-1 (basic) token this returns HTTP 401 whose ' +\n 'WWW-Authenticate names a different resource_metadata — re-authorize ' +\n 'through it (note its scopes_supported) and retry.'\n },\n {\n name: 'advance_to_stepup',\n description:\n `Rung 3 gate. Requires ${SCOPE_WRITE}; with only ${SCOPE_READ} this ` +\n 'returns HTTP 403 insufficient_scope naming the scope to add — ' +\n 're-authorize with it and retry.'\n },\n {\n name: 'auth_complete',\n description:\n 'The finish line. Succeeds only with a token proving every rung; the ' +\n 'result is the full report.'\n },\n {\n name: 'check_iss_validation',\n description:\n 'OPTIONAL TRAP (RFC 9207 / SEP-2468). Calling this returns a 401 ' +\n 'pointing at an AS that advertises ' +\n 'authorization_response_iss_parameter_supported: true but sends a ' +\n 'WRONG iss in the authorization response. This tool can NEVER return ' +\n 'success: a conformant client refuses to exchange the code (your own ' +\n 'client errors about the iss mismatch — that error IS the pass). A ' +\n 'client that exchanges the code anyway receives a poisoned token, and ' +\n 'every request made with it fails with an explanation. Run this last; ' +\n 'it ends the session either way.'\n }\n].map((t) => ({ ...t, inputSchema: { type: 'object', properties: {} } }));\n\nexport class AuthCheckerScenario extends HandlerScenario {\n name = 'checker-auth';\n description =\n 'Stateless auth re-auth chain: each tool rung forces re-authorization ' +\n 'under a different configuration (401 with a different ' +\n 'resource_metadata, then 403 insufficient_scope step-up). The access ' +\n 'token encodes progress; auth_complete succeeds only after every rung.';\n readonly source = { introducedIn: '2025-06-18' } as const;\n mcpPath = '';\n\n private checks: ConformanceCheck[] = [];\n\n handler(getBaseUrl: () => string): express.Application {\n const app = express();\n app.use(express.json());\n app.use(express.urlencoded({ extended: false }));\n\n const base = () => new URL(getBaseUrl());\n const basePath = () => (base().pathname === '/' ? '' : base().pathname);\n const prmUrl = (cfg: Cfg) =>\n `${base().origin}/.well-known/oauth-protected-resource${basePath()}${cfg === 'basic' ? '' : `/cfg/${cfg}`}`;\n const issuer = (cfg: Cfg) => `${getBaseUrl()}/as/${cfg}`;\n /** The deliberately-wrong iss value the trap AS puts in its redirects. */\n const wrongIss = () => `${getBaseUrl()}/as/mixup-attacker`;\n\n const record = (\n id: string,\n ok: boolean,\n description: string,\n details?: Record\n ) => {\n this.checks.push({\n id,\n name: id,\n description,\n status: ok ? 'SUCCESS' : 'WARNING',\n timestamp: new Date().toISOString(),\n specReferences: [\n {\n id: 'MCP-Auth',\n url: 'https://modelcontextprotocol.io/specification/2025-06-18/basic/authorization'\n }\n ],\n details\n });\n };\n\n // ---------------- protected resource metadata (three variants) --------\n const prmDoc = (cfg: Cfg) => ({\n resource: getBaseUrl(),\n authorization_servers: [issuer(cfg)],\n bearer_methods_supported: ['header'],\n // SEP-835: rung 2's PRM advertises the scope the client must request.\n // Deliberately ONLY the read scope — the write scope must be learned\n // from the rung-3 403 challenge, otherwise an SDK that requests all of\n // scopes_supported up front would never exercise the step-up path.\n ...(cfg === 'scoped' ? { scopes_supported: [SCOPE_READ] } : {})\n });\n app.get('/.well-known/oauth-protected-resource', (_req, res) => {\n res.json(prmDoc('basic'));\n });\n app.get('/.well-known/oauth-protected-resource/cfg/scoped', (_req, res) => {\n res.json(prmDoc('scoped'));\n });\n app.get(\n '/.well-known/oauth-protected-resource/cfg/isstrap',\n (_req, res) => {\n res.json(prmDoc('isstrap'));\n }\n );\n\n // ---------------- the two ASs (path-based issuers, stateless) ---------\n const asMetadata = (cfg: Cfg) => (_req: Request, res: Response) => {\n res.json({\n issuer: issuer(cfg),\n authorization_endpoint: `${issuer(cfg)}/authorize`,\n token_endpoint: `${issuer(cfg)}/token`,\n registration_endpoint: `${issuer(cfg)}/register`,\n response_types_supported: ['code'],\n grant_types_supported: ['authorization_code'],\n code_challenge_methods_supported: ['S256'],\n token_endpoint_auth_methods_supported: ['none'],\n ...(cfg === 'scoped'\n ? { scopes_supported: [SCOPE_READ, SCOPE_WRITE] }\n : {}),\n // RFC 9207: the trap AS PROMISES iss in authorization responses —\n // which obliges the client to validate it. The redirect then carries\n // a wrong one.\n ...(cfg === 'isstrap'\n ? { authorization_response_iss_parameter_supported: true }\n : {})\n });\n };\n for (const cfg of ['basic', 'scoped', 'isstrap'] as const) {\n app.get(\n `/.well-known/oauth-authorization-server/as/${cfg}`,\n asMetadata(cfg)\n );\n app.get(`/.well-known/openid-configuration/as/${cfg}`, asMetadata(cfg));\n\n app.post(`/as/${cfg}/register`, (req, res) => {\n res.status(201).json({\n ...req.body,\n client_id: `checker-auth-${cfg}-client`,\n token_endpoint_auth_method: 'none'\n });\n });\n\n app.get(`/as/${cfg}/authorize`, (req, res) => {\n const q = req.query as Record;\n const fail = (error: string, description: string) => {\n if (!q.redirect_uri) {\n res.status(400).json({ error, error_description: description });\n return;\n }\n const r = new URL(q.redirect_uri);\n r.searchParams.set('error', error);\n r.searchParams.set('error_description', description);\n if (q.state !== undefined) r.searchParams.set('state', q.state);\n res.redirect(r.toString());\n };\n if (\n q.code_challenge === undefined ||\n q.code_challenge_method !== 'S256'\n ) {\n fail('invalid_request', 'PKCE with S256 is required');\n return;\n }\n if (cfg === 'basic' && q.resource === undefined) {\n fail(\n 'invalid_target',\n 'RFC 8707: include the resource parameter naming the MCP server'\n );\n return;\n }\n const requested = (q.scope ?? '').split(' ').filter(Boolean);\n if (cfg === 'scoped' && !requested.includes(SCOPE_READ)) {\n fail(\n 'invalid_scope',\n `SEP-835: request the scopes advertised in the PRM scopes_supported (at least ${SCOPE_READ}); got '${q.scope ?? ''}'`\n );\n return;\n }\n record(\n `auth-checker-authorize-${cfg}`,\n true,\n `Conformant authorization request at the '${cfg}' AS`,\n { scope: q.scope }\n );\n if (!q.redirect_uri) {\n res.status(400).json({\n error: 'invalid_request',\n error_description: 'redirect_uri required'\n });\n return;\n }\n const r = new URL(q.redirect_uri);\n r.searchParams.set(\n 'code',\n Buffer.from(\n JSON.stringify({\n cfg,\n challenge: q.code_challenge,\n scope: requested.join(' ')\n })\n ).toString('base64url')\n );\n if (q.state !== undefined) r.searchParams.set('state', q.state);\n // The trap: metadata promised iss, the response lies about it. A\n // conformant client compares this against the issuer it authorized\n // at and refuses to exchange the code (RFC 9207 §2.4).\n if (cfg === 'isstrap') r.searchParams.set('iss', wrongIss());\n res.redirect(r.toString());\n });\n\n app.post(`/as/${cfg}/token`, (req, res) => {\n const grant = req.body as Record;\n let code: { cfg?: string; challenge?: string; scope?: string };\n try {\n code = JSON.parse(\n Buffer.from(String(grant.code ?? ''), 'base64url').toString()\n );\n } catch {\n code = {};\n }\n if (grant.grant_type !== 'authorization_code' || code.cfg !== cfg) {\n res.status(400).json({ error: 'invalid_grant' });\n return;\n }\n const expected = createHash('sha256')\n .update(String(grant.code_verifier ?? ''))\n .digest('base64url');\n if (expected !== code.challenge) {\n res.status(400).json({\n error: 'invalid_grant',\n error_description: 'PKCE verification failed'\n });\n return;\n }\n const scope = code.scope ?? '';\n // Exchanging a trap code means the client ignored the iss mismatch —\n // the token records the offense and incriminates every later request.\n res.json({\n access_token: mintToken({\n cfg,\n scope,\n ...(cfg === 'isstrap'\n ? { trap: 'exchanged-code-despite-iss-mismatch' }\n : {})\n }),\n token_type: 'Bearer',\n expires_in: 3600,\n ...(scope ? { scope } : {})\n });\n });\n }\n\n // ---------------- landing -------------------------------------------\n app.get('/', (req, res) => {\n if (!String(req.headers.accept ?? '').includes('text/html')) {\n res.status(405).json({\n error: 'POST JSON-RPC to this URL (auth required)',\n docs: 'open this URL in a browser for a full explanation'\n });\n return;\n }\n res.type('html').send(`\nMCP Checker — Auth Chain\n\n\n

MCP Checker — Auth Chain

Checks a client's OAuth behavior by forcing it back through\nauthorization under different configurations, using only the spec's own signals.\nStateless: the access token itself encodes your progress.

Rung 1 — basic: any unauthenticated request → 401. Complete\ndiscovery, DCR, PKCE (S256), and send the RFC 8707 resource parameter.
Rung 2 — AS switch + scopes: call advance_to_scoped →\n401 whose WWW-Authenticate names a different resource_metadata.\nRe-authorize there, requesting the scope from scopes_supported (SEP-835).
Rung 3 — step-up: call advance_to_stepup →\n403 insufficient_scope naming ${SCOPE_WRITE}. Re-authorize with it.
Finish: auth_complete succeeds only with the final token\nand prints the full report.
Optional trap — iss validation (RFC 9207): check_iss_validation\nchallenges you toward an AS whose metadata promises iss in authorization\nresponses, then sends a wrong one. A conformant client refuses to exchange the\ncode — your client's own iss-mismatch error is the pass. A client that exchanges anyway\ngets a poisoned token and every request with it fails with the explanation. Run it last;\nit ends the session either way.

Your token is readable: ac.<base64url JSON> — decode it any time to\nsee what your client has proven.

\n`);\n });\n\n // ---------------- the MCP endpoint, gated per rung -------------------\n // HTTP header values must be Latin-1; keep the rich text in the body.\n const headerSafe = (s: string) => s.replace(/[^\\x20-\\x7e]/g, '-');\n const challenge401 = (res: Response, cfg: Cfg, description: string) => {\n res\n .status(401)\n .set(\n 'WWW-Authenticate',\n `Bearer error=\"invalid_token\", error_description=\"${headerSafe(description)}\", resource_metadata=\"${prmUrl(cfg)}\"`\n )\n .json({ error: 'invalid_token', error_description: description });\n };\n\n app.post('/', async (req: Request, res: Response) => {\n const token = parseToken(req.headers.authorization);\n const body =\n req.body && !Array.isArray(req.body)\n ? (req.body as { method?: string; params?: { name?: string } })\n : {};\n\n if (!token) {\n challenge401(\n res,\n 'basic',\n 'Rung 1: authorize via the resource_metadata in this challenge'\n );\n return;\n }\n\n // NOTE: a poisoned token (minted by exchanging a wrong-iss code) is\n // NOT rejected at the HTTP layer. Doing so delivered the verdict on the\n // SDK's reconnect/initialize POST — a layer the agent never sees, so\n // the failure surfaced as an opaque \"reconnect failed: HTTP 400\". We\n // accept the token (the session stays alive) and instead fail the\n // check_iss_validation TOOL CALL in-band below, matching every other\n // rung's verdict style. Safe: the harness controls both ASs.\n\n // Gate the advance tools at the HTTP layer so the failures are real\n // OAuth challenges, not tool errors — that is the whole trick.\n const toolName =\n body.method === 'tools/call' ? body.params?.name : undefined;\n\n // The iss trap. A non-poisoned token gets challenged toward the trap AS\n // (a conformant client refuses mid-OAuth and never comes back — that\n // out-of-band refusal is the PASS). A poisoned token means the client\n // exchanged the wrong-iss code: fall through to the SDK dispatch, which\n // returns the FAIL verdict as an in-band tool result.\n if (toolName === 'check_iss_validation' && !token.trap) {\n record(\n 'auth-checker-iss-trap-armed',\n true,\n 'iss trap challenge issued'\n );\n challenge401(\n res,\n 'isstrap',\n 'iss validation check: re-authorize via the resource_metadata in this challenge. If your client validates iss (RFC 9207) it will refuse to complete - that refusal is the PASS'\n );\n return;\n }\n if (toolName === 'advance_to_scoped' && token.cfg !== 'scoped') {\n record(\n 'auth-checker-rung2-challenged',\n true,\n 'Rung 2 challenge issued'\n );\n challenge401(\n res,\n 'scoped',\n 'Rung 2: this rung requires the second AS configuration — re-authorize via the resource_metadata in this challenge and note its scopes_supported'\n );\n return;\n }\n if (\n (toolName === 'advance_to_stepup' || toolName === 'auth_complete') &&\n !(token.cfg === 'scoped' && hasScope(token, SCOPE_WRITE))\n ) {\n if (token.cfg !== 'scoped') {\n challenge401(res, 'scoped', 'Complete rung 2 before rung 3');\n return;\n }\n record('auth-checker-rung3-challenged', true, 'Rung 3 step-up issued');\n res\n .status(403)\n .set(\n 'WWW-Authenticate',\n `Bearer error=\"insufficient_scope\", scope=\"${SCOPE_READ} ${SCOPE_WRITE}\", resource_metadata=\"${prmUrl('scoped')}\"`\n )\n .json({\n error: 'insufficient_scope',\n error_description: `Rung 3: re-authorize with '${SCOPE_WRITE}' (RFC 6750 step-up)`\n });\n return;\n }\n\n // Gate passed — serve via the SDK (per-request, stateless).\n const server = new Server(SERVER_INFO, {\n capabilities: { tools: {} },\n instructions:\n 'Auth-chain checker. Call auth_status, then advance_to_scoped, ' +\n 'then advance_to_stepup, then auth_complete. Each advance forces ' +\n 'a re-authorization under a different configuration; an HTTP ' +\n '401/403 along the way is the next challenge, not a failure.'\n });\n server.setRequestHandler(ListToolsRequestSchema, async () => ({\n tools: TOOLS\n }));\n server.setRequestHandler(\n CallToolRequestSchema,\n async (request): Promise => {\n // iss trap, fail path: reached only with a poisoned token, i.e.\n // the client exchanged a code whose response carried a wrong iss.\n // Deliver the verdict in-band so it surfaces as a tool result, not\n // a swallowed transport error — and keep the session alive.\n if (request.params.name === 'check_iss_validation') {\n record(\n 'auth-checker-iss-trap-caught',\n false,\n 'Client exchanged an authorization code despite an iss mismatch',\n { iss: wrongIss(), expected: issuer('isstrap') }\n );\n return {\n content: [\n {\n type: 'text',\n text:\n 'FAIL [check_iss_validation]: client exchanged an ' +\n `authorization code whose response carried iss='${wrongIss()}', ` +\n `expected '${issuer('isstrap')}' (RFC 9207 / SEP-2468). The ` +\n 'trap AS advertised ' +\n 'authorization_response_iss_parameter_supported: true, so a ' +\n 'conformant client MUST compare iss against the issuer it ' +\n 'authorized at and abort BEFORE the token exchange. ' +\n 'Reaching this tool result means your client did not — ' +\n 'leaving it open to authorization-server mix-up attacks.'\n }\n ],\n isError: true\n };\n }\n const proof = RUNG_PROOF[request.params.name];\n if (!proof) {\n return {\n content: [\n {\n type: 'text',\n text: `unknown tool '${request.params.name}'`\n }\n ],\n isError: true\n };\n }\n record(`auth-checker-${request.params.name}`, true, proof, {\n cfg: token.cfg,\n scope: token.scope\n });\n const status =\n request.params.name === 'auth_status'\n ? `Token: cfg=${token.cfg}, scope='${token.scope}' — ${\n token.cfg === 'basic'\n ? 'rung 1 done; call advance_to_scoped next.'\n : hasScope(token, SCOPE_WRITE)\n ? 'all rungs done; call auth_complete.'\n : 'rung 2 done; call advance_to_stepup next.'\n }`\n : proof;\n return {\n content: [\n {\n type: 'text',\n text: `CONFORMANCE OK [${request.params.name}]: ${status}`\n }\n ]\n };\n }\n );\n const transport = new StreamableHTTPServerTransport({\n sessionIdGenerator: undefined\n });\n await server.connect(transport);\n await transport.handleRequest(req, res, req.body);\n res.on('close', () => {\n void transport.close();\n void server.close();\n });\n });\n\n return app;\n }\n\n getChecks(): ConformanceCheck[] {\n return this.checks;\n }\n}\n",[],[128,233,365,429],"b4d48251-4782-4f02-8fcb-782334551aca","d7111a94-ad13-11f1-8600-1607ee4eb77e","9f323523-6c17-4682-a46c-6c3ac09d1fec",16,["D",1789043614923],"import { Scenario } from '../../../types.ts';\nimport { metadataScenarios } from './discovery-metadata.ts';\nimport { AuthBasicCIMDScenario } from './basic-cimd.ts';\nimport {\n Auth20250326OAuthMetadataBackcompatScenario,\n Auth20250326OEndpointFallbackScenario\n} from './march-spec-backcompat.ts';\nimport {\n ScopeFromWwwAuthenticateScenario,\n ScopeFromScopesSupportedScenario,\n ScopeOmittedWhenUndefinedScenario,\n ScopeStepUpAuthScenario,\n ScopeRetryLimitScenario\n} from './scope-handling.ts';\nimport {\n ClientSecretBasicAuthScenario,\n ClientSecretPostAuthScenario,\n PublicClientAuthScenario\n} from './token-endpoint-auth.ts';\nimport {\n ClientCredentialsJwtScenario,\n ClientCredentialsBasicScenario\n} from './client-credentials.ts';\nimport { ResourceMismatchScenario } from './resource-mismatch.ts';\nimport { PreRegistrationScenario } from './pre-registration.ts';\nimport { EnterpriseManagedAuthorizationScenario } from './enterprise-managed-authorization.ts';\nimport {\n OfflineAccessScopeScenario,\n OfflineAccessNotSupportedScenario\n} from './offline-access.ts';\nimport { AuthorizationServerMigrationScenario } from './authorization-server-migration.ts';\nimport {\n IssParameterSupportedScenario,\n IssParameterNotAdvertisedScenario,\n IssParameterSupportedMissingScenario,\n IssParameterWrongIssuerScenario,\n IssParameterUnexpectedScenario,\n IssParameterNormalizedVariantScenario,\n MetadataIssuerMismatchScenario\n} from './issuer-parameter.ts';\n\n// Auth scenarios (required for tier 1)\nexport const authScenariosList: Scenario[] = [\n ...metadataScenarios,\n new AuthBasicCIMDScenario(),\n new ScopeFromWwwAuthenticateScenario(),\n new ScopeFromScopesSupportedScenario(),\n new ScopeOmittedWhenUndefinedScenario(),\n new ScopeStepUpAuthScenario(),\n new ScopeRetryLimitScenario(),\n new ClientSecretBasicAuthScenario(),\n new ClientSecretPostAuthScenario(),\n new PublicClientAuthScenario(),\n new PreRegistrationScenario()\n];\n\n// Back-compat scenarios (optional - backward compatibility with older spec versions)\nexport const backcompatScenariosList: Scenario[] = [\n new Auth20250326OAuthMetadataBackcompatScenario(),\n new Auth20250326OEndpointFallbackScenario()\n];\n\n// Extension scenarios (optional for tier 1 - protocol extensions)\nexport const extensionScenariosList: Scenario[] = [\n new ClientCredentialsJwtScenario(),\n new ClientCredentialsBasicScenario(),\n new EnterpriseManagedAuthorizationScenario()\n];\n\n// Draft scenarios (informational - not scored for tier assessment)\nexport const draftScenariosList: Scenario[] = [\n new ResourceMismatchScenario(),\n new OfflineAccessScopeScenario(),\n new OfflineAccessNotSupportedScenario(),\n new AuthorizationServerMigrationScenario(),\n new IssParameterSupportedScenario(),\n new IssParameterNotAdvertisedScenario(),\n new IssParameterSupportedMissingScenario(),\n new IssParameterWrongIssuerScenario(),\n new IssParameterUnexpectedScenario(),\n new IssParameterNormalizedVariantScenario(),\n new MetadataIssuerMismatchScenario()\n];\n",[],[128,233,365,444,212],"auth","f89ceca4-af19-49f5-8fdc-4828c1df76d7","discovery-metadata.ts","d6b7450a-ad13-11f1-9b49-1607ee4eb77e",15,["D",1789043614323],"/**\n * OAuth Metadata Discovery Scenarios\n *\n * These scenarios test different combinations of PRM and OAuth metadata locations.\n * The configurations are defined in SCENARIO_CONFIGS below and scenarios are\n * generated from them.\n */\n\nimport {\n AuthHandlerScenario,\n AuthHandlerContext,\n AuthHandlers,\n ConformanceCheck\n} from '../../../types.ts';\nimport { createAuthServer } from './helpers/createAuthServer.ts';\nimport { createServer } from './helpers/createServer.ts';\nimport { SpecReferences } from './spec-references.ts';\nimport { Request, Response } from 'npm:express@^5.1.0';\n\n/**\n * Configuration for a metadata discovery scenario.\n */\ninterface MetadataScenarioConfig {\n name: string;\n prmLocation: string;\n inWwwAuth: boolean;\n oauthMetadataLocation: string;\n /** Route prefix for the auth server (e.g., '/tenant1') */\n authRoutePrefix?: string;\n /** If true, add a trap for root PRM requests */\n trapRootPrm?: boolean;\n}\n\n/**\n * Scenario configurations table:\n *\n * | Scenario | PRM Location | In WWW-Auth | OAuth Metadata Location |\n * |------------------|-------------------------------------------|-------------|------------------------------------------------|\n * | metadata-default | /.well-known/oauth-protected-resource/mcp | Yes | /.well-known/oauth-authorization-server |\n * | metadata-var1 | /.well-known/oauth-protected-resource/mcp | No | /.well-known/openid-configuration |\n * | metadata-var2 | /.well-known/oauth-protected-resource | No | /.well-known/oauth-authorization-server/tenant1|\n * | metadata-var3 | /custom/metadata/location.json | Yes | /tenant1/.well-known/openid-configuration |\n */\nconst SCENARIO_CONFIGS: MetadataScenarioConfig[] = [\n {\n name: 'metadata-default',\n prmLocation: '/.well-known/oauth-protected-resource/mcp',\n inWwwAuth: true,\n oauthMetadataLocation: '/.well-known/oauth-authorization-server',\n trapRootPrm: true\n },\n {\n name: 'metadata-var1',\n prmLocation: '/.well-known/oauth-protected-resource/mcp',\n inWwwAuth: false,\n oauthMetadataLocation: '/.well-known/openid-configuration'\n },\n {\n name: 'metadata-var2',\n prmLocation: '/.well-known/oauth-protected-resource',\n inWwwAuth: false,\n oauthMetadataLocation: '/.well-known/oauth-authorization-server/tenant1',\n authRoutePrefix: '/tenant1'\n },\n {\n name: 'metadata-var3',\n prmLocation: '/custom/metadata/location.json',\n inWwwAuth: true,\n oauthMetadataLocation: '/tenant1/.well-known/openid-configuration',\n authRoutePrefix: '/tenant1'\n }\n];\n\n/**\n * Base for the table-driven discovery scenarios. Each subclass binds a row\n * of SCENARIO_CONFIGS; we use real classes (not factory-returned literals)\n * so the hosted runner can do `new Ctor()` for a fresh instance per run.\n */\nabstract class MetadataDiscoveryScenario extends AuthHandlerScenario {\n protected abstract readonly config: MetadataScenarioConfig;\n readonly source = { introducedIn: '2025-11-25' } as const;\n private checks: ConformanceCheck[] = [];\n\n get name() {\n return `auth/${this.config.name}`;\n }\n get description() {\n return `Tests Basic OAuth metadata discovery flow.\n\n**PRM:** ${this.config.prmLocation}${this.config.inWwwAuth ? '' : ' (not in WWW-Authenticate)'}\n**OAuth metadata:** ${this.config.oauthMetadataLocation}\n`;\n }\n\n authHandlers(ctx: AuthHandlerContext): AuthHandlers {\n this.checks = [];\n const config = this.config;\n const routePrefix = config.authRoutePrefix || '';\n const isOpenIdConfiguration = config.oauthMetadataLocation.includes(\n 'openid-configuration'\n );\n const getAsUrl = () => ctx.getAuxBaseUrl('as');\n\n const authApp = createAuthServer(this.checks, getAsUrl, {\n metadataPath: config.oauthMetadataLocation,\n isOpenIdConfiguration,\n ...(routePrefix && { routePrefix })\n });\n\n // If path-based OAuth metadata, trap root requests\n if (routePrefix) {\n authApp.get('/.well-known/oauth-authorization-server', (req, res) => {\n this.checks.push({\n id: 'authorization-server-metadata-wrong-path',\n name: 'AuthorizationServerMetadataWrongPath',\n description:\n 'Client requested authorization server at the root path when the AS URL has a path-based location',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n specReferences: [\n SpecReferences.RFC_AUTH_SERVER_METADATA_REQUEST,\n SpecReferences.MCP_AUTH_DISCOVERY\n ],\n details: {\n url: req.url\n }\n });\n res.status(404).send('Not Found');\n });\n }\n\n const getAuthServerUrl = routePrefix\n ? () => `${getAsUrl()}${routePrefix}`\n : getAsUrl;\n\n const rsApp = createServer(\n this.checks,\n ctx.getRsBaseUrl,\n getAuthServerUrl,\n {\n prmPath: config.prmLocation,\n includePrmInWwwAuth: config.inWwwAuth\n }\n );\n\n // Add trap for root PRM requests if configured\n if (config.trapRootPrm) {\n rsApp.get(\n '/.well-known/oauth-protected-resource',\n (req: Request, res: Response) => {\n this.checks.push({\n id: 'prm-priority-order',\n name: 'PRM Priority Order',\n description:\n 'Client requested PRM metadata at root location on a server with path-based PRM',\n status: 'FAILURE',\n timestamp: new Date().toISOString(),\n specReferences: [\n SpecReferences.RFC_PRM_DISCOVERY,\n SpecReferences.MCP_PRM_DISCOVERY\n ],\n details: {\n url: req.url,\n path: req.path\n }\n });\n\n res.status(404).json({\n error: 'not_found',\n error_description: 'PRM metadata not available at root location'\n });\n }\n );\n }\n\n return { rs: rsApp, aux: { as: authApp } };\n }\n\n rawChecks(): ConformanceCheck[] {\n return this.checks;\n }\n\n getChecks(): ConformanceCheck[] {\n const isPathBasedPrm =\n this.config.prmLocation === '/.well-known/oauth-protected-resource/mcp';\n const expectedSlugs = [\n ...(isPathBasedPrm ? ['prm-pathbased-requested'] : []),\n 'authorization-server-metadata',\n 'client-registration',\n 'authorization-request',\n 'token-request'\n ];\n\n for (const slug of expectedSlugs) {\n if (!this.checks.find((c) => c.id === slug)) {\n this.checks.push({\n id: slug,\n name: `Expected Check Missing: ${slug}`,\n description: `Expected Check Missing: ${slug}`,\n status: 'FAILURE',\n timestamp: new Date().toISOString()\n });\n }\n }\n\n return this.checks;\n }\n}\n\nexport class AuthMetadataDefaultScenario extends MetadataDiscoveryScenario {\n protected readonly config = SCENARIO_CONFIGS[0];\n}\nexport class AuthMetadataVar1Scenario extends MetadataDiscoveryScenario {\n protected readonly config = SCENARIO_CONFIGS[1];\n}\nexport class AuthMetadataVar2Scenario extends MetadataDiscoveryScenario {\n protected readonly config = SCENARIO_CONFIGS[2];\n}\nexport class AuthMetadataVar3Scenario extends MetadataDiscoveryScenario {\n protected readonly config = SCENARIO_CONFIGS[3];\n}\n\n// Export all scenarios as an array for convenience\nexport const metadataScenarios = [\n new AuthMetadataDefaultScenario(),\n new AuthMetadataVar1Scenario(),\n new AuthMetadataVar2Scenario(),\n new AuthMetadataVar3Scenario()\n];\n\n// Export function to list metadata scenario names (for suite support)\nexport function listMetadataScenarios(): string[] {\n return metadataScenarios.map((s) => s.name);\n}\n",[],[128,233,365,444,446],"31fab290-500f-4847-9ad7-4cd67426359a",["D",1789043614323],[170,171],[128,233,365,444],"a7cfba3d-3417-4acf-85ba-a2082af37347",["D",1789043611708],[169,172,173,174,175,176,177,178,179,180,181],[128,233,365],"3124931c-1f0b-4235-b5d2-bf0f2a6ca2b1","authorization-server-metadata.ts","d6671c56-ad13-11f1-a650-1607ee4eb77e","915f928e-42c4-4864-a297-c3b2a55525d0",14,["D",1789043613775],"/**\n * Authorization server metadata endpoint test scenarios for MCP authorization servers\n */\nimport {\n ClientScenarioForAuthorizationServer,\n ConformanceCheck\n} from '../../types.ts';\nimport { request } from 'npm:undici@^7.25.0';\n\ntype Status = 'SUCCESS' | 'FAILURE';\n\nexport class AuthorizationServerMetadataEndpointScenario implements ClientScenarioForAuthorizationServer {\n name = 'authorization-server-metadata-endpoint';\n readonly source = { introducedIn: '2025-03-26' } as const;\n description = `Test authorization server metadata endpoint.\n\n**Authorization Server Implementation Requirements:**\n\n**Endpoint**: \\`authorization server metadata\\`\n\n**Requirements**:\n- HTTP response status code MUST be 200 OK\n- Content-Type header MUST be application/json\n- Return a JSON response including issuer, authorization_endpoint, token_endpoint and response_types_supported\n- The issuer value MUST match the URI obtained by removing the well-known URI string from the authorization server metadata URI.`;\n\n async run(serverUrl: string): Promise {\n let status: Status = 'SUCCESS';\n let errorMessage: string | undefined;\n let details: any;\n let response: any | null = null;\n try {\n const wellKnownUrls = this.createWellKnownUrl(serverUrl);\n\n for (const url of wellKnownUrls) {\n try {\n const checkResponse = await request(url, { method: 'GET' });\n if (checkResponse.statusCode === 200) {\n response = checkResponse;\n break;\n }\n } catch {\n // Ignore the error and proceed to the next loop.\n }\n }\n\n if (!response) {\n throw new Error(\n 'All authorization server metadata endpoints returned invalid status code.'\n );\n }\n\n this.validateContentType(response.headers['content-type']);\n\n const body = await this.parseJson(response);\n const errors: string[] = [];\n this.validateMetadataBody(body, serverUrl, errors);\n\n if (errors.length > 0) {\n status = 'FAILURE';\n errorMessage = errors.join(', ');\n }\n\n details = {\n contentType: response.headers['content-type'],\n body\n };\n } catch (error) {\n status = 'FAILURE';\n errorMessage = error instanceof Error ? error.message : String(error);\n }\n\n return [\n {\n id: 'authorization-server-metadata',\n name: 'AuthorizationServerMetadata',\n description: 'Valid authorization server metadata response',\n status,\n timestamp: new Date().toISOString(),\n errorMessage,\n specReferences: [\n {\n id: 'Authorization-Server-Metadata',\n url: 'https://datatracker.ietf.org/doc/html/rfc8414'\n }\n ],\n ...(details ? { details } : {})\n }\n ];\n }\n\n private createWellKnownUrl(serverUrl: string): string[] {\n const base = new URL(serverUrl);\n const origin = base.origin;\n const path = base.pathname.replace(/\\/$/, '');\n\n const urls = new Set();\n urls.add(`${origin}/.well-known/oauth-authorization-server${path}`);\n urls.add(`${origin}/.well-known/openid-configuration${path}`);\n urls.add(`${origin}${path}/.well-known/openid-configuration`);\n\n return Array.from(urls);\n }\n\n private validateContentType(contentType?: string | string[]): void {\n const valid =\n typeof contentType === 'string' &&\n contentType.toLowerCase().includes('application/json');\n\n if (!valid) {\n throw new Error(`Invalid Content-Type: ${contentType ?? '(missing)'}`);\n }\n }\n\n private async parseJson(response: any): Promise> {\n const body = await response.body.json();\n if (typeof body !== 'object' || body === null) {\n throw new Error('Response body is not an object');\n }\n return body;\n }\n\n private validateMetadataBody(\n body: Record,\n serverUrl: string,\n errors: string[]\n ): void {\n this.assertString(\n body.authorization_endpoint,\n 'authorization_endpoint',\n errors\n );\n this.assertString(body.token_endpoint, 'token_endpoint', errors);\n\n if (\n !Array.isArray(body.response_types_supported) ||\n !body.response_types_supported.includes('code')\n ) {\n errors.push(\n 'Response body does not include valid \"response_types_supported\" claim'\n );\n }\n\n if (\n !Array.isArray(body.code_challenge_methods_supported) ||\n !body.code_challenge_methods_supported.includes('S256')\n ) {\n errors.push(\n 'Response body does not include valid \"code_challenge_methods_supported\" claim'\n );\n }\n\n if (body.issuer !== serverUrl) {\n errors.push(`Invalid issuer: ${body.issuer ?? '(missing)'}`);\n }\n }\n\n private assertString(value: unknown, name: string, errors: string[]): void {\n if (typeof value !== 'string' || value.length === 0) {\n errors.push(`Response body does not include valid \"${name}\" claim`);\n }\n }\n}\n",[],[128,233,470,462],"authorization-server","163255dc-656a-4a7a-80e4-cb2410065855",["D",1789043613775],[167],[128,233,470],"b6f6630c-f135-467b-8460-f1158f0e04dd",["D",1789043609699],[166,168,182,198],[128,233],"81fddb85-7958-40f1-8486-9040150bea52","store.ts","d343f09e-ad13-11f1-892b-1607ee4eb77e","11abc952-e3be-41e6-ac33-6929c3af1284",5,["D",1789043608531],"/**\n * Run persistence for the hosted conformance server.\n *\n * A long-lived Node process keeps every run in memory and needs none of this.\n * Serverless hosts (val.town, Deno Deploy, …) load-balance one run's requests\n * across short-lived isolates, so the isolate that answers GET /results is\n * often not the one that saw the MCP traffic. A RunStore lets each isolate\n * write through what it observed and lets any isolate serve a merged view:\n *\n * - run metadata (id → scenario) so an isolate that never saw the run can\n * still rebuild its handlers (aux-origin requests, results pages);\n * - checks, keyed by (run, writer): each isolate owns its own row and\n * replaces it wholesale after every request, so concurrent writers never\n * clobber each other and no append ordering is needed.\n *\n * The merged log is re-judged at results time by a fresh scenario instance\n * (see SessionManager.results), which is what turns \"isolate B never saw a\n * tools/call\" from a false FAILURE into the union of what A and B saw.\n */\n\nimport type { ConformanceCheck } from '../types.ts';\n\nexport interface RunStore {\n saveRun(id: string, scenarioName: string): Promise;\n /** Scenario name for a run id, or undefined if no isolate ever saw it. */\n loadRun(id: string): Promise;\n saveChecks(\n id: string,\n writer: string,\n checks: ConformanceCheck[]\n ): Promise;\n /** All writers' check lists for a run, keyed by writer id. */\n loadChecks(id: string): Promise>;\n deleteRun(id: string): Promise;\n}\n\n/** In-process store — used by tests to exercise the merge path. */\nexport class MemoryRunStore implements RunStore {\n private runs = new Map();\n private checks = new Map>();\n\n async saveRun(id: string, scenarioName: string): Promise {\n if (!this.runs.has(id)) this.runs.set(id, scenarioName);\n }\n async loadRun(id: string): Promise {\n return this.runs.get(id);\n }\n async saveChecks(\n id: string,\n writer: string,\n checks: ConformanceCheck[]\n ): Promise {\n let byWriter = this.checks.get(id);\n if (!byWriter) this.checks.set(id, (byWriter = new Map()));\n byWriter.set(\n writer,\n checks.map((c) => ({ ...c }))\n );\n }\n async loadChecks(id: string): Promise> {\n return new Map(this.checks.get(id) ?? []);\n }\n async deleteRun(id: string): Promise {\n this.runs.delete(id);\n this.checks.delete(id);\n }\n}\n",[],[128,488,480],"hosted","3032af6f-d845-4901-918a-2db95b6f2b50","session.ts","d48fd9ae-ad13-11f1-9b49-1607ee4eb77e",9,["D",1789043610719],"/**\n * Session management for the hosted conformance server.\n *\n * A \"run\" is one isolated exercise of a scenario. Each run owns a fresh\n * Scenario instance and the RequestListener it returns from handler() — no\n * loopback port, no proxy. Runs are keyed by a path-embedded id so\n * correlation works for stateless-transport clients that never echo\n * mcp-session-id.\n */\n\nimport { randomBytes } from 'node:crypto';\nimport {\n Scenario,\n ConformanceCheck,\n RequestListener,\n AuthHandlerScenario,\n AuxOriginRole\n} from '../types.ts';\nimport { getScenario, scenarios } from '../scenarios/index.ts';\nimport type { RunStore } from './store.ts';\n\nexport interface HostedRun {\n id: string;\n scenarioName: string;\n scenario: Scenario;\n /** The mounted RS handler — invoke directly with (req, res). */\n listener: RequestListener;\n /** Aux-origin handlers (AS, IdP, …) for auth scenarios. */\n auxListeners?: Partial>;\n /** Sub-path under the run prefix where the MCP endpoint lives. */\n mcpPath: string;\n createdAt: number;\n lastSeenAt: number;\n context?: Record;\n}\n\nexport interface SessionManagerOptions {\n /** Idle ms after which a run is reaped. Default 5 minutes. */\n ttlMs?: number;\n sweepIntervalMs?: number;\n /**\n * Public origins of the relay deployments, keyed by role. Required for any\n * scenario that exposes `authHandlers()`. Each value is the relay's public\n * URL (no trailing slash); per-run AS issuer becomes `/r/`.\n */\n auxOrigins?: Partial>;\n /**\n * Optional persistence so runs survive being load-balanced across\n * processes (serverless isolates). Omit for a single long-lived process.\n */\n store?: RunStore;\n}\n\n/** Results view: the scenario a run belongs to plus its judged checks. */\nexport interface RunResults {\n scenarioName: string;\n checks: ConformanceCheck[];\n}\n\n/**\n * The scenario's raw event log — what it actually observed — as opposed to\n * getChecks(), which for most client scenarios also appends \"expected X,\n * never saw it\" FAILUREs (and mutates). Persisting the raw log per process\n * and judging the merged log once is what makes multi-process hosting work.\n */\nexport function rawChecksOf(scenario: Scenario): ConformanceCheck[] {\n if (scenario.rawChecks) return scenario.rawChecks();\n const bag = (scenario as unknown as { checks?: unknown }).checks;\n if (Array.isArray(bag)) return bag as ConformanceCheck[];\n return scenario.getChecks();\n}\n\n/**\n * Judge a merged raw log with the scenario's own end-of-run logic by loading\n * it into a fresh instance. Falls back to the raw log for scenarios that\n * don't keep a plain `checks` array.\n */\nexport function finalizeChecks(\n scenarioName: string,\n merged: ConformanceCheck[]\n): ConformanceCheck[] {\n const proto = getScenario(scenarioName);\n if (!proto) return merged;\n try {\n const Ctor = proto.constructor as new () => Scenario;\n const fresh = new Ctor() as unknown as {\n checks?: unknown;\n getChecks(): ConformanceCheck[];\n };\n if (!Array.isArray(fresh.checks)) return merged;\n fresh.checks = merged.map((c) => ({ ...c }));\n return fresh.getChecks();\n } catch {\n return merged;\n }\n}\n\nexport class SessionManager {\n private runs = new Map();\n private readonly ttlMs: number;\n private readonly auxOrigins: Partial>;\n private sweeper: ReturnType;\n readonly store: RunStore | undefined;\n private pending = new Set>();\n /** Identifies this process's rows in the store. */\n readonly writerId = randomBytes(4).toString('hex');\n\n constructor(opts: SessionManagerOptions = {}) {\n this.ttlMs = opts.ttlMs ?? 5 * 60_000;\n this.auxOrigins = opts.auxOrigins ?? {};\n this.store = opts.store;\n const sweepIntervalMs = opts.sweepIntervalMs ?? 30_000;\n this.sweeper = setInterval(() => this.sweep(), sweepIntervalMs);\n this.sweeper.unref?.();\n }\n\n /**\n * Get the run for (scenario, id), creating it on first reference. The id is\n * caller-chosen so URLs are predictable; pass undefined to mint one.\n */\n getOrCreate(\n scenarioName: string,\n id: string | undefined,\n baseUrlFor: (runId: string) => string\n ): HostedRun {\n if (id) {\n const existing = this.runs.get(id);\n if (existing && existing.scenarioName === scenarioName) {\n existing.lastSeenAt = Date.now();\n return existing;\n }\n // Same id reused for a different scenario → replace, don't merge checks.\n if (existing) void this.destroy(id);\n }\n\n const proto = getScenario(scenarioName);\n if (!proto) throw new UnknownScenarioError(scenarioName);\n\n const Ctor = proto.constructor as new () => Scenario;\n const scenario = new Ctor();\n const runId = id ?? randomBytes(6).toString('base64url');\n\n let listener: RequestListener;\n let auxListeners: HostedRun['auxListeners'];\n let context: Record | undefined;\n\n if (scenario instanceof AuthHandlerScenario) {\n // Multi-origin scenario: build RS + aux handlers from authHandlers().\n // Aux issuer is /r/ so the run-id is recoverable\n // from any RFC 8414 well-known path the client constructs from it.\n const missing = scenario.auxRoles.filter((r) => !this.auxOrigins[r]);\n if (missing.length) {\n throw new NotHostableError(\n scenarioName,\n `needs aux origin(s) [${missing.join(', ')}] — start with --as-origin`\n );\n }\n const handlers = scenario.authHandlers({\n getRsBaseUrl: () => baseUrlFor(runId),\n getAuxBaseUrl: (role) => `${this.auxOrigins[role]}/r/${runId}`\n });\n listener = handlers.rs;\n auxListeners = handlers.aux;\n context = (\n scenario as unknown as {\n scenarioContext?: () => Record;\n }\n ).scenarioContext?.();\n } else if (scenario.handler) {\n listener = scenario.handler(() => baseUrlFor(runId));\n } else {\n throw new NotHostableError(scenarioName);\n }\n\n const steps = (scenario as Scenario).steps;\n if (steps) context = { ...context, steps };\n\n const run: HostedRun = {\n id: runId,\n scenarioName,\n scenario,\n listener,\n auxListeners,\n mcpPath: scenario.mcpPath ?? '',\n createdAt: Date.now(),\n lastSeenAt: Date.now(),\n context\n };\n this.runs.set(runId, run);\n void this.store?.saveRun(runId, scenarioName).catch(logStoreError);\n return run;\n }\n\n get(id: string): HostedRun | undefined {\n const r = this.runs.get(id);\n if (r) r.lastSeenAt = Date.now();\n return r;\n }\n\n /**\n * Like get(), but if this process has never seen the run and a store is\n * configured, rebuild it from persisted metadata. This is how an aux-origin\n * request or a results page lands correctly on a cold process.\n */\n async ensure(\n id: string,\n baseUrlFor: (scenarioName: string, runId: string) => string\n ): Promise {\n const local = this.get(id);\n if (local || !this.store) return local;\n let scenarioName: string | undefined;\n try {\n scenarioName = await this.store.loadRun(id);\n } catch (e) {\n logStoreError(e);\n }\n if (!scenarioName) return undefined;\n return this.getOrCreate(scenarioName, id, (rid) =>\n baseUrlFor(scenarioName, rid)\n );\n }\n\n /** Write this process's view of a run's checks through to the store. */\n persist(run: HostedRun): Promise {\n if (!this.store) return Promise.resolve();\n const p = this.store\n .saveChecks(\n run.id,\n this.writerId,\n rawChecksOf(run.scenario).map((c) => ({ ...c }))\n )\n .catch(logStoreError)\n .finally(() => this.pending.delete(p));\n this.pending.add(p);\n return p;\n }\n\n /**\n * Resolve once every in-flight persist() has settled. Serverless entry\n * points await this before handing back the response so the write isn't\n * abandoned when the isolate is frozen after responding.\n */\n async flush(): Promise {\n while (this.pending.size) await Promise.all(Array.from(this.pending));\n }\n\n /**\n * Judged checks for a run. Without a store this is the scenario's own\n * getChecks(). With a store it is every process's raw log merged (this\n * process's live log wins over its own persisted row) and re-judged once.\n */\n async results(id: string): Promise {\n const run = this.runs.get(id);\n if (!this.store) {\n return run\n ? { scenarioName: run.scenarioName, checks: run.scenario.getChecks() }\n : undefined;\n }\n let byWriter = new Map();\n try {\n byWriter = await this.store.loadChecks(id);\n } catch (e) {\n logStoreError(e);\n }\n if (run) byWriter.set(this.writerId, rawChecksOf(run.scenario));\n let scenarioName = run?.scenarioName;\n if (!scenarioName) {\n try {\n scenarioName = await this.store.loadRun(id);\n } catch (e) {\n logStoreError(e);\n }\n }\n if (!scenarioName) return undefined;\n const merged = Array.from(byWriter.values())\n .flat()\n .sort((a, b) => (a.timestamp ?? '').localeCompare(b.timestamp ?? ''));\n return { scenarioName, checks: finalizeChecks(scenarioName, merged) };\n }\n\n list(): HostedRun[] {\n return Array.from(this.runs.values());\n }\n\n async destroy(id: string, fromStore = true): Promise {\n const r = this.runs.get(id);\n if (fromStore) void this.store?.deleteRun(id).catch(logStoreError);\n if (!r) return;\n this.runs.delete(id);\n // handler() never started a server, but some scenarios hold timers/streams\n // that stop() cleans up. Safe to call even though start() wasn't.\n try {\n await r.scenario.stop();\n } catch {\n // best-effort\n }\n }\n\n async close(): Promise {\n clearInterval(this.sweeper);\n await Promise.all(\n Array.from(this.runs.keys()).map((id) => this.destroy(id, false))\n );\n }\n\n private sweep(): void {\n const now = Date.now();\n for (const [id, r] of this.runs) {\n // Local eviction only — the store has its own retention.\n if (now - r.lastSeenAt > this.ttlMs) void this.destroy(id, false);\n }\n }\n}\n\nfunction logStoreError(e: unknown): void {\n console.error('[hosted] run store:', e instanceof Error ? e.message : e);\n}\n\nexport class UnknownScenarioError extends Error {\n constructor(name: string) {\n super(\n `Unknown scenario '${name}'. Available: ${Array.from(scenarios.keys()).join(', ')}`\n );\n }\n}\n\nexport class NotHostableError extends Error {\n constructor(name: string, why?: string) {\n super(\n `Scenario '${name}' cannot run hosted` +\n (why\n ? `: ${why}`\n : ` (no handler() or authHandlers() — typically backcompat scenarios that need root-of-origin endpoints).`)\n );\n }\n}\n\n/** Scenarios that can run hosted, partitioned by what they need. */\nexport function listHostableScenarios(\n withAuxOrigins: readonly AuxOriginRole[] = []\n): string[] {\n const have = new Set(withAuxOrigins);\n return Array.from(scenarios.entries())\n .filter(([, s]) => {\n if (typeof s.handler === 'function') return true;\n if (s instanceof AuthHandlerScenario) {\n return s.auxRoles.every((r) => have.has(r));\n }\n return false;\n })\n .map(([name]) => name);\n}\n",[],[128,488,490],"9dfe4842-b567-4fbf-95e3-81576c7acf0a","server.ts","d2f92186-ad13-11f1-b27a-1607ee4eb77e",["D",1789043608031],"/**\n * Hosted conformance server — direct-mount, no loopback proxy.\n *\n * URL scheme (run-id is path-embedded so stateless-transport clients work):\n *\n * ALL /s//[/] Mounted scenario handler. The run\n * is created lazily on first hit;\n * pick any you like.\n * GET /s/ Convenience: mints a fresh run-id\n * and returns {mcpUrl, resultsUrl}.\n * GET /results/ JSON {summary, checks}\n * GET /results/.html Pretty HTML report\n * GET /scenarios JSON list of hostable scenarios\n * GET / Landing page\n * POST /mcp Meta-MCP: list_scenarios,\n * start_run, get_results\n *\n * Scenarios are mounted via Scenario.handler() — the same RequestListener the\n * CLI runner wraps in http.createServer — so there is no loopback port and\n * this works on serverless hosts. Each run gets a fresh Scenario instance.\n */\n\nimport express, { Request, Response } from 'npm:express@^5.1.0';\nimport { ServerResponse } from 'node:http';\nimport { timingSafeEqual } from 'node:crypto';\nimport { Server } from 'npm:@modelcontextprotocol/sdk@^1.29.0/server/index.js';\nimport { StreamableHTTPServerTransport } from 'npm:@modelcontextprotocol/sdk@^1.29.0/server/streamableHttp.js';\nimport {\n CallToolRequestSchema,\n ListToolsRequestSchema,\n CallToolResult\n} from 'npm:@modelcontextprotocol/sdk@^1.29.0/types.js';\nimport {\n SessionManager,\n HostedRun,\n UnknownScenarioError,\n NotHostableError,\n listHostableScenarios\n} from './session.ts';\nimport { renderLanding, renderResults } from './html.ts';\nimport type { RunStore } from './store.ts';\nimport { getScenario } from '../scenarios/index.ts';\nimport {\n ConformanceCheck,\n AuxOriginRole,\n AuthHandlerScenario,\n RequestListener,\n Scenario\n} from '../types.ts';\n\nexport interface HostedServerOptions {\n publicOrigin?: string;\n ttlMs?: number;\n /**\n * Public origins of the AS/IdP relay deployments. When set, scenarios that\n * implement `authHandlers()` become hostable; their per-run AS issuer is\n * `/r/`. See examples/hosted/valtown-relay.ts.\n */\n auxOrigins?: Partial>;\n /**\n * Shared secret the relay sends in `x-relay-secret`. `/__aux/*` rejects\n * requests without it so the aux backchannel can't be hit directly. Set\n * the same value in the relay's env.\n */\n relaySecret?: string;\n /**\n * Persist runs so a deployment that load-balances one run's requests\n * across processes (serverless isolates) still serves complete results.\n * See ./store.ts. Omit for a single long-lived process.\n */\n store?: RunStore;\n}\n\n/** Only allow run-ids that are safe in a single path segment. */\nconst RUN_ID_RE = /^[A-Za-z0-9_-]{1,64}$/;\n\nconst AUX_ROLES: readonly AuxOriginRole[] = ['as', 'as2', 'idp'];\n\n// ---------------------------------------------------------------------------\n// Stateless (\"/x\") mounting support.\n//\n// /x/ mounts a scenario with NO run-id and NO results polling: a\n// fresh scenario instance judges each request on its own content, and if the\n// request itself violates a conformance requirement the response is replaced\n// with a 400 explaining which checks failed. This only behaves sensibly for\n// scenarios whose checks are per-request (no cross-request memory) — which\n// is also exactly what serverless hosts with multiple isolates can support.\n// ---------------------------------------------------------------------------\n\n/** Scenarios whose checks need cross-request or timing state — excluded. */\nconst NOT_STATELESS = new Set(['sse-retry']);\n\n/**\n * The aux relay correlates flows by a /r/ in the path. In stateless\n * mode that segment encodes the scenario name instead of a run-id\n * ('auth/metadata-default' → 'x--auth--metadata-default'); run-ids can't\n * collide with it because '--' never appears in minted ids and the prefix is\n * reserved.\n */\nconst STATELESS_SLUG_PREFIX = 'x--';\nfunction statelessSlug(scenarioName: string): string {\n return STATELESS_SLUG_PREFIX + scenarioName.split('/').join('--');\n}\nfunction decodeStatelessSlug(segment: string): string | undefined {\n if (!segment.startsWith(STATELESS_SLUG_PREFIX)) return undefined;\n return segment.slice(STATELESS_SLUG_PREFIX.length).split('--').join('/');\n}\n\ninterface CapturedResponse {\n status: number;\n headers: Record;\n body: Buffer;\n}\n\n/**\n * Run a scenario listener against a buffered response so the outcome can be\n * judged (and replaced) after the handler finishes. Same interception\n * surface the valtown bridge uses: writeHead/setHeader/write/end and the\n * statusCode property — everything express and the SDK transport touch.\n */\nfunction runCaptured(\n listener: RequestListener,\n req: Request,\n rewrittenUrl: string\n): Promise {\n return new Promise((resolve, reject) => {\n const headers: Record = {};\n const chunks: Buffer[] = [];\n let status = 200;\n\n const fake = new ServerResponse(req) as ServerResponse;\n const captureHeaders = (\n h?: Record\n ): void => {\n for (const [k, v] of Object.entries(h ?? {})) {\n headers[k.toLowerCase()] = Array.isArray(v) ? v : String(v);\n }\n };\n fake.setHeader = ((k: string, v: string | string[] | number) => {\n headers[k.toLowerCase()] = Array.isArray(v) ? v : String(v);\n return fake;\n }) as ServerResponse['setHeader'];\n fake.getHeader = (k: string) => headers[k.toLowerCase()];\n fake.removeHeader = (k: string) => {\n delete headers[k.toLowerCase()];\n };\n fake.writeHead = ((code: number, h?: Record) => {\n status = code;\n captureHeaders(h);\n return fake;\n }) as ServerResponse['writeHead'];\n fake.write = ((c: string | Buffer, enc?: BufferEncoding) => {\n if (c) chunks.push(typeof c === 'string' ? Buffer.from(c, enc) : c);\n return true;\n }) as ServerResponse['write'];\n fake.flushHeaders = () => {};\n Object.defineProperty(fake, 'statusCode', {\n get: () => status,\n set: (v: number) => {\n status = v;\n }\n });\n fake.end = ((c?: string | Buffer, enc?: BufferEncoding) => {\n if (c) chunks.push(typeof c === 'string' ? Buffer.from(c, enc) : c);\n resolve({ status, headers, body: Buffer.concat(chunks) });\n return fake;\n }) as ServerResponse['end'];\n\n req.url = rewrittenUrl;\n try {\n listener(req, fake);\n } catch (e) {\n reject(e instanceof Error ? e : new Error(String(e)));\n }\n });\n}\n\nexport function createHostedApp(opts: HostedServerOptions = {}): {\n app: express.Application;\n sessions: SessionManager;\n} {\n const auxOrigins = opts.auxOrigins ?? {};\n const haveAux = AUX_ROLES.filter((r) => auxOrigins[r]);\n const sessions = new SessionManager({\n ttlMs: opts.ttlMs,\n auxOrigins,\n store: opts.store\n });\n const app = express();\n const hostable = new Set(listHostableScenarios(haveAux));\n\n function origin(req: Request): string {\n if (opts.publicOrigin) return opts.publicOrigin;\n const proto = (req.header('x-forwarded-proto') ?? req.protocol) || 'http';\n const host = req.header('x-forwarded-host') ?? req.header('host');\n return `${proto}://${host}`;\n }\n\n function runBaseUrl(req: Request, scenario: string, runId: string): string {\n return `${origin(req)}/s/${scenario}/${runId}`;\n }\n\n /**\n * Resolve \"//\" against the hostable set.\n * Scenario names may contain '/', so try progressively longer prefixes.\n * Returns undefined if no hostable scenario matches the prefix.\n */\n function resolveRun(rest: string):\n | {\n scenarioName: string;\n runId: string | undefined;\n suffix: string;\n }\n | undefined {\n const segments = rest.split('/');\n for (let i = 1; i <= segments.length; i++) {\n const candidate = segments.slice(0, i).join('/');\n if (hostable.has(candidate)) {\n const runId = segments[i] || undefined;\n const suffix = '/' + segments.slice(i + 1).join('/');\n return { scenarioName: candidate, runId, suffix };\n }\n }\n return undefined;\n }\n\n /**\n * Dispatch (req, res) to `listener` after rewriting `req.url` so the\n * scenario sees the path it would have under start()/stop() — i.e. with\n * the run-prefix stripped and (for well-known dispatch) the well-known\n * prefix re-prepended.\n */\n function dispatch(\n run: HostedRun,\n listener: (req: Request, res: Response) => void,\n req: Request,\n res: Response,\n rewrittenUrl: string\n ) {\n res.setHeader(\n 'link',\n `<${origin(req)}/results/${run.id}>; rel=\"conformance-results\"`\n );\n req.url = rewrittenUrl;\n if (sessions.store) {\n // Write this process's view through once the scenario has answered\n // (hosted scenarios record their checks before calling end()).\n // Serverless entry points should await sessions.flush() before\n // returning the response so this write isn't abandoned.\n const end = res.end;\n res.end = function (this: Response, ...args: unknown[]) {\n const out = (end as (...a: unknown[]) => Response).apply(this, args);\n void sessions.persist(run);\n return out;\n } as Response['end'];\n }\n listener(req, res);\n }\n\n // ---------- discovery ----------\n\n app.get('/', (req, res) => {\n res\n .type('html')\n .send(\n renderLanding(\n origin(req),\n Array.from(hostable),\n (name) => getScenario(name)?.steps\n )\n );\n });\n\n app.get('/scenarios', (_req, res) => {\n res.json(\n Array.from(hostable).map((name) => {\n const s = getScenario(name)!;\n return {\n name,\n description: s.description,\n source: s.source,\n mcpPath: s.mcpPath ?? '',\n ...(s.steps && { steps: s.steps })\n };\n })\n );\n });\n\n // ---------- scenario mounting ----------\n //\n // We can't pre-register an express route per (scenario, run-id) because\n // run-ids are open-ended. Instead a single catch-all route resolves the\n // run, rewrites req.url to strip the /s// prefix, and hands\n // off to the run's listener — exactly what app.use(prefix, fn) would do,\n // but with a dynamic prefix.\n\n app.all(/^\\/s\\/(.+)$/, (req, res, next) => {\n const rest = req.params[0]; // \"//\"\n const resolved = resolveRun(rest);\n if (!resolved) {\n // Distinguish \"exists but not hostable\" from \"unknown\"\n const segments = rest.split('/');\n for (let i = 1; i <= segments.length; i++) {\n if (getScenario(segments.slice(0, i).join('/'))) {\n res.status(501).json({\n error: `scenario '${segments.slice(0, i).join('/')}' is not hostable here`\n });\n return;\n }\n }\n res.status(404).json({ error: `unknown scenario '${segments[0]}'` });\n return;\n }\n const { scenarioName, runId, suffix } = resolved;\n\n // GET /s/ with no run-id → mint one and tell the caller where\n // to point their client.\n if (!runId) {\n if (req.method !== 'GET') {\n res.status(400).json({\n error:\n 'Missing run-id. Use /s//, or GET /s/ to mint one.'\n });\n return;\n }\n try {\n const run = sessions.getOrCreate(scenarioName, undefined, (id) =>\n runBaseUrl(req, scenarioName, id)\n );\n res.json({\n runId: run.id,\n mcpUrl: `${runBaseUrl(req, scenarioName, run.id)}${run.mcpPath}`,\n resultsUrl: `${origin(req)}/results/${run.id}`,\n resultsHtmlUrl: `${origin(req)}/results/${run.id}.html`,\n context: contextFor(run)\n });\n } catch (e) {\n next(e);\n }\n return;\n }\n\n if (!RUN_ID_RE.test(runId)) {\n res.status(400).json({ error: 'invalid run-id' });\n return;\n }\n\n let run;\n try {\n run = sessions.getOrCreate(scenarioName, runId, (id) =>\n runBaseUrl(req, scenarioName, id)\n );\n } catch (e) {\n if (e instanceof UnknownScenarioError || e instanceof NotHostableError) {\n res.status(400).json({ error: e.message });\n return;\n }\n throw e;\n }\n\n // Rewrite to the path the scenario expects (it thinks it's at root).\n // The query string is preserved because we keep the express req object.\n dispatch(\n run,\n run.listener,\n req,\n res,\n suffix === '/' ? run.mcpPath || '/' : suffix\n );\n });\n\n // ---------- stateless mounting (no run-id, fail-fast) ----------\n //\n // /x/[/] judges every request on its own content with a\n // fresh scenario instance. A request that records a FAILURE check gets a\n // 400 explaining what went wrong instead of the scenario's response — the\n // client-under-test finds out immediately, no results polling, no mint.\n\n interface StatelessInstance {\n scenario: Scenario;\n listener: RequestListener;\n auxListeners?: Partial>;\n mcpPath: string;\n }\n\n function instantiateStateless(\n scenarioName: string,\n baseUrl: string\n ): StatelessInstance {\n const proto = getScenario(scenarioName);\n if (!proto) throw new UnknownScenarioError(scenarioName);\n const Ctor = proto.constructor as new () => Scenario;\n const scenario = new Ctor();\n\n if (scenario instanceof AuthHandlerScenario) {\n const missing = scenario.auxRoles.filter((r) => !auxOrigins[r]);\n if (missing.length) {\n throw new NotHostableError(\n scenarioName,\n `needs aux origin(s) [${missing.join(', ')}] — start with --as-origin`\n );\n }\n const handlers = scenario.authHandlers({\n getRsBaseUrl: () => baseUrl,\n getAuxBaseUrl: (role) =>\n `${auxOrigins[role]}/r/${statelessSlug(scenarioName)}`\n });\n return {\n scenario,\n listener: handlers.rs,\n auxListeners: handlers.aux,\n mcpPath: scenario.mcpPath ?? ''\n };\n }\n if (scenario.handler) {\n return {\n scenario,\n listener: scenario.handler(() => baseUrl),\n mcpPath: scenario.mcpPath ?? ''\n };\n }\n throw new NotHostableError(scenarioName);\n }\n\n /**\n * Resolve \"/\" (no run-id segment) against the\n * hostable set, longest scenario-name prefix first.\n */\n function resolveStateless(\n rest: string\n ): { scenarioName: string; suffix: string } | undefined {\n const segments = rest.split('/');\n for (let i = segments.length; i >= 1; i--) {\n const candidate = segments.slice(0, i).join('/');\n if (hostable.has(candidate) && !NOT_STATELESS.has(candidate)) {\n return {\n scenarioName: candidate,\n suffix: '/' + segments.slice(i).join('/')\n };\n }\n }\n return undefined;\n }\n\n /** Emit the captured response, or replace it with a 400 on FAILUREs. */\n function finishStateless(\n res: Response,\n scenario: Scenario,\n captured: CapturedResponse,\n scenarioName: string\n ): void {\n const checks = scenario.rawChecks?.() ?? scenario.getChecks();\n const failures = checks.filter((c) => c.status === 'FAILURE');\n if (failures.length > 0) {\n res.status(400).json({\n error: 'conformance failure',\n scenario: scenarioName,\n failures: failures.map(({ id, description, details }) => ({\n id,\n description,\n details\n }))\n });\n return;\n }\n for (const [k, v] of Object.entries(captured.headers)) {\n res.setHeader(k, v);\n }\n res.setHeader(\n 'mcp-conformance',\n `pass; checks=${checks.filter((c) => c.status === 'SUCCESS').length}`\n );\n res.status(captured.status);\n res.end(captured.body.length ? captured.body : undefined);\n }\n\n app.all(/^\\/x\\/(.+)$/, async (req, res) => {\n const rest = req.params[0];\n const resolved = resolveStateless(rest);\n if (!resolved) {\n const segments = rest.split('/');\n for (let i = 1; i <= segments.length; i++) {\n const candidate = segments.slice(0, i).join('/');\n if (NOT_STATELESS.has(candidate)) {\n res.status(501).json({\n error: `scenario '${candidate}' needs cross-request state and cannot run stateless — use /s/${candidate}/`\n });\n return;\n }\n if (getScenario(candidate)) {\n res.status(501).json({\n error: `scenario '${candidate}' is not hostable here`\n });\n return;\n }\n }\n res.status(404).json({ error: `unknown scenario '${segments[0]}'` });\n return;\n }\n const { scenarioName, suffix } = resolved;\n\n let inst: StatelessInstance;\n try {\n inst = instantiateStateless(\n scenarioName,\n `${origin(req)}/x/${scenarioName}`\n );\n } catch (e) {\n if (e instanceof UnknownScenarioError || e instanceof NotHostableError) {\n res.status(400).json({ error: e.message });\n return;\n }\n throw e;\n }\n\n const search = req.url.includes('?')\n ? req.url.slice(req.url.indexOf('?'))\n : '';\n const captured = await runCaptured(\n inst.listener,\n req,\n (suffix === '/' ? inst.mcpPath || '/' : suffix) + search\n );\n finishStateless(res, inst.scenario, captured, scenarioName);\n });\n\n // RFC 8414 root well-known for stateless mounts that embed their own AS\n // (path-based issuer /x//): metadata lives at\n // /.well-known//x//.\n app.get(\n /^\\/\\.well-known\\/(oauth-authorization-server|openid-configuration)\\/x\\/(.+)$/,\n async (req, res) => {\n const doc = req.params[0];\n const resolved = resolveStateless(req.params[1]);\n if (!resolved) {\n res.status(404).json({ error: 'no scenario for this issuer path' });\n return;\n }\n let inst: StatelessInstance;\n try {\n inst = instantiateStateless(\n resolved.scenarioName,\n `${origin(req)}/x/${resolved.scenarioName}`\n );\n } catch {\n res.status(404).json({ error: 'no scenario for this issuer path' });\n return;\n }\n const rewritten =\n `/.well-known/${doc}` +\n (resolved.suffix === '/' ? '' : resolved.suffix);\n const captured = await runCaptured(inst.listener, req, rewritten);\n finishStateless(res, inst.scenario, captured, resolved.scenarioName);\n }\n );\n\n // RFC 9728 root well-known for stateless mounts: PRM URL for MCP URL\n // /x//mcp is /.well-known/oauth-protected-resource/x//mcp.\n app.get(\n /^\\/\\.well-known\\/oauth-protected-resource\\/x\\/(.+)$/,\n async (req, res) => {\n const resolved = resolveStateless(req.params[0]);\n if (!resolved) {\n res.status(404).json({ error: 'no scenario for this resource path' });\n return;\n }\n let inst: StatelessInstance;\n try {\n inst = instantiateStateless(\n resolved.scenarioName,\n `${origin(req)}/x/${resolved.scenarioName}`\n );\n } catch {\n res.status(404).json({ error: 'no scenario for this resource path' });\n return;\n }\n const rewritten =\n '/.well-known/oauth-protected-resource' +\n (resolved.suffix === '/' ? '' : resolved.suffix);\n const captured = await runCaptured(inst.listener, req, rewritten);\n finishStateless(res, inst.scenario, captured, resolved.scenarioName);\n }\n );\n\n // ---------- root well-known dispatch (RS side) ----------\n //\n // RFC 9728: a client given MCP URL /s///mcp derives the PRM\n // URL as /.well-known/oauth-protected-resource/s///mcp —\n // i.e. at the *origin root*, not under the run prefix. We catch that here,\n // recover (scenario, run-id) from the path suffix, and re-dispatch to the\n // run's RS handler with the path it would have seen on its own origin.\n //\n // Requests that arrive *under* the run prefix (because the WWW-Authenticate\n // header points there) already work via the /s/* mount above.\n\n app.get(/^\\/\\.well-known\\/oauth-protected-resource\\/s\\/(.+)$/, (req, res) => {\n const resolved = resolveRun(req.params[0]);\n if (!resolved?.runId || !RUN_ID_RE.test(resolved.runId)) {\n res.status(404).json({ error: 'no run for this resource path' });\n return;\n }\n // getOrCreate, not get: on a multi-process host this may be the first\n // request this process sees for the run.\n let run;\n try {\n run = sessions.getOrCreate(resolved.scenarioName, resolved.runId, (id) =>\n runBaseUrl(req, resolved.scenarioName, id)\n );\n } catch {\n res.status(404).json({ error: 'no run for this resource path' });\n return;\n }\n // Scenario expects e.g. '/.well-known/oauth-protected-resource/mcp'\n const rewritten =\n '/.well-known/oauth-protected-resource' +\n (resolved.suffix === '/' ? '' : resolved.suffix);\n dispatch(run, run.listener, req, res, rewritten);\n });\n\n // ---------- aux-origin backchannel (relay target) ----------\n //\n // The AS relay (examples/hosted/valtown-relay.ts) forwards every request it\n // receives to /__aux/. The per-run AS issuer is\n // /r/, so every path the client hits — endpoints\n // (/r//authorize) and RFC 8414 well-known\n // (/.well-known/oauth-authorization-server/r/[/tenant]) — carries\n // `/r/` somewhere in it. We extract the id, strip that segment, and\n // dispatch to the run's aux handler so it sees exactly the path\n // createAuthServer registered.\n //\n // Guarded by a shared secret so this internal mount can't be hit directly\n // to forge checks into someone else's run.\n\n if (haveAux.length) {\n const secret = opts.relaySecret ?? process.env.CONFORMANCE_RELAY_SECRET;\n const guard = (req: Request, res: Response): boolean => {\n const got = req.header('x-relay-secret') ?? '';\n // Constant-time compare; mismatch length → fast 403 is fine.\n const ok =\n !!secret &&\n got.length === secret.length &&\n timingSafeEqual(Buffer.from(got), Buffer.from(secret));\n if (!ok) {\n res\n .status(403)\n .json({ error: 'forbidden: /__aux is the relay backchannel' });\n }\n return ok;\n };\n\n app.all(/^\\/__aux\\/([a-z0-9]+)(\\/.*)$/, async (req, res) => {\n if (!guard(req, res)) return;\n const role = req.params[0] as AuxOriginRole;\n const path = req.params[1];\n if (!AUX_ROLES.includes(role)) {\n res.status(404).json({ error: `unknown aux role '${role}'` });\n return;\n }\n\n // Find /r/ anywhere in the path and excise it.\n const m = path.match(/^(.*?)\\/r\\/([A-Za-z0-9_-]{1,64})(\\/.*)?$/);\n if (!m) {\n res\n .status(404)\n .json({ error: 'aux request path missing /r/ segment' });\n return;\n }\n const [, prefix, runId, suffix = ''] = m;\n const search = req.url.includes('?')\n ? req.url.slice(req.url.indexOf('?'))\n : '';\n\n // Stateless flows encode the scenario name (not a run-id) in the /r/\n // segment; per-flow OAuth state rides inside the artifacts themselves\n // (auth code, token), so a fresh instance per request is enough.\n const slugScenario = decodeStatelessSlug(runId);\n if (slugScenario !== undefined) {\n let inst: StatelessInstance;\n try {\n inst = instantiateStateless(\n slugScenario,\n `${origin(req)}/x/${slugScenario}`\n );\n } catch {\n res\n .status(404)\n .json({ error: `no stateless scenario '${slugScenario}'` });\n return;\n }\n const listener = inst.auxListeners?.[role];\n if (!listener) {\n res.status(404).json({ error: `no aux '${role}' handler` });\n return;\n }\n const captured = await runCaptured(\n listener,\n req,\n (prefix + suffix || '/') + search\n );\n finishStateless(res, inst.scenario, captured, slugScenario);\n return;\n }\n\n const run = await sessions.ensure(runId, (s, id) =>\n runBaseUrl(req, s, id)\n );\n const listener = run?.auxListeners?.[role];\n if (!run || !listener) {\n res.status(404).json({ error: `no aux '${role}' handler for run` });\n return;\n }\n dispatch(run, listener, req, res, (prefix + suffix || '/') + search);\n });\n }\n\n // ---------- results ----------\n\n app.get('/results/:id.html', async (req, res) => {\n const r = await sessions.results(req.params.id);\n if (!r) {\n res\n .status(404)\n .type('html')\n .send(`

No run ${escapeId(req.params.id)}

`);\n return;\n }\n res\n .type('html')\n .send(renderResults(r.scenarioName, req.params.id, r.checks));\n });\n\n app.get('/results/:id', async (req, res) => {\n const r = await sessions.results(req.params.id);\n if (!r) {\n res.status(404).json({ error: 'unknown run' });\n return;\n }\n res.json(summarise(r.scenarioName, req.params.id, r.checks));\n });\n\n app.delete('/results/:id', async (req, res) => {\n await sessions.destroy(req.params.id);\n res.status(204).end();\n });\n\n // ---------- meta MCP server ----------\n\n app.post('/mcp', express.json(), async (req, res) => {\n const server = createMetaMcpServer(sessions, origin(req), (s, id) =>\n runBaseUrl(req, s, id)\n );\n const transport = new StreamableHTTPServerTransport({\n sessionIdGenerator: undefined\n });\n await server.connect(transport);\n await transport.handleRequest(req, res, req.body);\n res.on('close', () => {\n transport.close();\n server.close();\n });\n });\n\n return { app, sessions };\n}\n\nfunction summarise(scenario: string, id: string, checks: ConformanceCheck[]) {\n const counts = { SUCCESS: 0, FAILURE: 0, WARNING: 0, SKIPPED: 0, INFO: 0 };\n for (const c of checks) counts[c.status]++;\n return {\n runId: id,\n scenario,\n summary: {\n passed: counts.SUCCESS,\n failed: counts.FAILURE,\n warnings: counts.WARNING,\n info: counts.INFO,\n skipped: counts.SKIPPED,\n total: checks.length\n },\n checks\n };\n}\n\nfunction createMetaMcpServer(\n sessions: SessionManager,\n publicOrigin: string,\n runBaseUrl: (scenario: string, runId: string) => string\n): Server {\n const server = new Server(\n { name: 'mcp-conformance-hosted', version: '0.2.0' },\n { capabilities: { tools: {} } }\n );\n\n server.setRequestHandler(ListToolsRequestSchema, async () => ({\n tools: [\n {\n name: 'list_scenarios',\n description:\n 'List client-conformance scenarios this hosted instance can serve.',\n inputSchema: { type: 'object', properties: {} }\n },\n {\n name: 'start_run',\n description:\n 'Create a fresh run for a scenario and return the MCP URL to point ' +\n 'the client-under-test at, plus the results URL. The run-id is ' +\n 'embedded in the path so this works with stateless transports.',\n inputSchema: {\n type: 'object',\n properties: {\n scenario: {\n type: 'string',\n description: 'Scenario name, e.g. \"initialize\" or \"tools_call\".'\n },\n run_id: {\n type: 'string',\n description:\n 'Optional. Supply your own [A-Za-z0-9_-]{1,64} id; ' +\n 'otherwise one is generated.'\n }\n },\n required: ['scenario']\n }\n },\n {\n name: 'get_results',\n description:\n 'Fetch the conformance checks recorded for a run. Same shape as ' +\n 'GET /results/.',\n inputSchema: {\n type: 'object',\n properties: { run_id: { type: 'string' } },\n required: ['run_id']\n }\n }\n ]\n }));\n\n server.setRequestHandler(\n CallToolRequestSchema,\n async (request): Promise => {\n const args = (request.params.arguments ?? {}) as Record;\n switch (request.params.name) {\n case 'list_scenarios':\n return text(\n JSON.stringify(\n listHostableScenarios().map((name) => ({\n name,\n description: getScenario(name)!.description\n })),\n null,\n 2\n )\n );\n\n case 'start_run': {\n if (args.run_id && !RUN_ID_RE.test(args.run_id)) {\n return errorText(`invalid run_id (must match ${RUN_ID_RE})`);\n }\n try {\n const run = sessions.getOrCreate(args.scenario, args.run_id, (id) =>\n runBaseUrl(args.scenario, id)\n );\n return text(\n JSON.stringify(\n {\n runId: run.id,\n mcpUrl: `${runBaseUrl(run.scenarioName, run.id)}${run.mcpPath}`,\n resultsUrl: `${publicOrigin}/results/${run.id}`,\n resultsHtmlUrl: `${publicOrigin}/results/${run.id}.html`,\n context: contextFor(run)\n },\n null,\n 2\n )\n );\n } catch (e) {\n if (\n e instanceof UnknownScenarioError ||\n e instanceof NotHostableError\n ) {\n return errorText(e.message);\n }\n throw e;\n }\n }\n\n case 'get_results': {\n const r = await sessions.results(args.run_id);\n if (!r) return errorText(`no run '${args.run_id}'`);\n return text(\n JSON.stringify(\n summarise(r.scenarioName, args.run_id, r.checks),\n null,\n 2\n )\n );\n }\n\n default:\n return errorText(`unknown tool ${request.params.name}`);\n }\n }\n );\n\n return server;\n}\n\n/**\n * The context blob a client-under-test needs (pre-registered credentials\n * etc.), tagged with the scenario name the way the CLI runner's\n * MCP_CONFORMANCE_CONTEXT is, so it can be passed through verbatim.\n */\nfunction contextFor(run: HostedRun): Record | undefined {\n return run.context ? { name: run.scenarioName, ...run.context } : undefined;\n}\n\nfunction escapeId(id: string): string {\n return id.replace(/[^A-Za-z0-9_-]/g, '');\n}\n\nfunction text(t: string): CallToolResult {\n return { content: [{ type: 'text', text: t }] };\n}\n\nfunction errorText(t: string): CallToolResult {\n return { content: [{ type: 'text', text: t }], isError: true };\n}\n",[],[128,488,498],"a0d22a5e-a386-49ca-a95a-bb7150aff68d","html.ts","d43ddbd6-ad13-11f1-9006-1607ee4eb77e",8,["D",1789043610188],"import { ConformanceCheck, CheckStatus } from '../types.ts';\n\nconst STATUS_STYLE: Record = {\n SUCCESS: 'background:#d1fae5;color:#065f46',\n FAILURE: 'background:#fee2e2;color:#991b1b',\n WARNING: 'background:#fef3c7;color:#92400e',\n SKIPPED: 'background:#e5e7eb;color:#374151',\n INFO: 'background:#dbeafe;color:#1e40af'\n};\n\nconst css = `\n body{font:14px/1.5 ui-sans-serif,system-ui,sans-serif;max-width:960px;\n margin:2rem auto;padding:0 1rem;color:#111}\n code,pre{font:12px/1.4 ui-monospace,SFMono-Regular,Menlo,monospace}\n pre{background:#f6f8fa;padding:.75rem;border-radius:6px;overflow:auto}\n .pill{display:inline-block;padding:2px 8px;border-radius:10px;\n font-size:11px;font-weight:600}\n .check{border:1px solid #e5e7eb;border-radius:6px;padding:.75rem;\n margin:.5rem 0}\n .check h3{margin:0 0 .25rem;font-size:14px}\n details>summary{cursor:pointer;color:#6b7280;font-size:12px}\n table{border-collapse:collapse;width:100%}\n td,th{text-align:left;padding:.4rem .6rem;border-bottom:1px solid #eee}\n a{color:#2563eb}\n`;\n\nfunction esc(s: string): string {\n return s.replace(\n /[&<>\"]/g,\n (c) => ({ '&': '&', '<': '<', '>': '>', '\"': '"' })[c]!\n );\n}\n\nexport function renderLanding(\n origin: string,\n scenarios: string[],\n stepsFor: (name: string) => readonly unknown[] | undefined = () => undefined\n): string {\n const rows = scenarios\n .map((n) => {\n const steps = stepsFor(n);\n const steer = steps\n ? `

steps (${steps.length})

` +\n `

${esc(JSON.stringify(steps, null, 1))}

`\n : 'bespoke';\n return (\n `${esc(n)}` +\n `${esc(origin)}/s/${esc(n)}/<run-id>` +\n `${steer}` +\n `mint`\n );\n })\n .join('');\n return `\nMCP Conformance — hosted\n

MCP Conformance — hosted

Point your MCP client at /s/<scenario>/<run-id>.\nPick any <run-id> (e.g. local-1) — the run is\ncreated on first request, and because the id is in the path it works with\nstateless transports too. Then GET\n/results/<run-id> (append .html for a\nreport).

Too lazy to pick an id? GET /s/<scenario> mints one and\nreturns {mcpUrl, resultsUrl}.

This server is also an MCP server at ${esc(origin)}/mcp with\nlist_scenarios / start_run /\nget_results tools.

Generic steering: scenarios with a steps column need no\nscenario-specific client code — the mint response (and /scenarios)\ncarries context.steps, a closed op list\n(tools/list, tools/call, wait,\ndisconnect) that a dumb client can interpret. Pass the\ncontext object verbatim as MCP_CONFORMANCE_CONTEXT.

Scenarios (${scenarios.length})

\n${rows}

name	MCP URL pattern	client

Example

$ npx @modelcontextprotocol/inspector ${esc(origin)}/s/initialize/demo\n$ curl ${esc(origin)}/results/demo | jq .summary

`;\n}\n\nexport function renderResults(\n scenario: string,\n sessionId: string,\n checks: ConformanceCheck[]\n): string {\n const items = checks\n .map((c) => {\n const pill = `${c.status}`;\n const refs = (c.specReferences ?? [])\n .map((r) =>\n r.url\n ? `${esc(r.id)}`\n : `${esc(r.id)}`\n )\n .join(' · ');\n const details =\n c.details || c.errorMessage\n ? `

details

${esc(\n              JSON.stringify(\n                { errorMessage: c.errorMessage, ...c.details },\n                null,\n                2\n              )\n            )}

`\n : '';\n return `

${pill} `${esc(c.id)}` — ${esc(\n c.name\n )}

${esc(c.description)}

${refs}

${details}

`;\n })\n .join('');\n const passed = checks.filter((c) => c.status === 'SUCCESS').length;\n const failed = checks.filter((c) => c.status === 'FAILURE').length;\n return `\n${esc(scenario)} — ${sessionId}\n

`${esc(scenario)}`

session ${esc(sessionId)} — ${passed} passed, ${failed} failed,\n${checks.length} total

${items}`;\n}\n",[],[128,488,505],"eed5a261-eb58-445c-86c0-d3d5aef33e35",["D",1789043608031],[161,162,163,164],[128,488],["D",1789043608031],[160,165,199,201],[128],"3fea48ed-b846-446a-88ff-ade7b701cf22","valtown.ts","d143119e-ad13-11f1-80b9-1607ee4eb77e","33e15d6c-9b64-4c7e-ad30-c57b58f95711",["D",1789043605188],"/**\n * MCP conformance — val.town deployment.\n *\n * The hosted runner mounts each scenario's `handler()` (a Node\n * `RequestListener`) under `/s//`. On val.town the entry\n * point is a fetch handler, so we bridge web Request→Node req/res once and\n * reuse the *real* scenario implementations from the package — no\n * reimplementation, no loopback port.\n *\n * Deploy: create an HTTP val and paste:\n *\n * import handler from \"https://esm.sh/@modelcontextprotocol/conformance/examples/hosted/valtown.ts\";\n * export default handler;\n *\n * or copy this file in directly. Requires a runtime with Node-compat\n * (`node:http`, `node:stream`) — val.town, Deno Deploy, Bun all qualify.\n *\n * Limitation: scenarios that rely on long-lived SSE streams or connection-\n * close timing (`sse-retry`) won't behave correctly through a buffered\n * Request→Response bridge. They're filtered out below.\n */\n\nimport { createHostedApp } from '../../src/hosted/server.ts';\nimport { toFetchHandler } from './fetch-bridge.ts';\nimport { SqliteRunStore } from './valtown-store.ts';\n\nconst NOT_FETCH_SAFE = new Set(['sse-retry']);\n\n// Auth scenarios need a second public origin (RFC 8414 well-known is\n// origin-rooted). Deploy examples/hosted/valtown-relay.ts as a separate val\n// and point CONFORMANCE_AS_ORIGIN at it; both vals share\n// CONFORMANCE_RELAY_SECRET so /__aux can't be hit directly.\nconst { app, sessions } = createHostedApp({\n auxOrigins: {\n as: process.env.CONFORMANCE_AS_ORIGIN,\n as2: process.env.CONFORMANCE_AS2_ORIGIN,\n idp: process.env.CONFORMANCE_IDP_ORIGIN\n },\n relaySecret: process.env.CONFORMANCE_RELAY_SECRET,\n // val.town spreads one run's requests over several isolates; persist to\n // the account's SQLite so /results is the union of what they all saw.\n store: process.env.valtown ? new SqliteRunStore() : undefined\n});\n\nconst bridge = toFetchHandler(app);\n\nexport default async function (request: Request): Promise {\n const url = new URL(request.url);\n\n // Short-circuit scenarios that need true streaming.\n const m = url.pathname.match(/^\\/s\\/([^/]+)/);\n if (m && NOT_FETCH_SAFE.has(m[1])) {\n return Response.json(\n {\n error: `scenario '${m[1]}' relies on SSE stream lifecycle and is not available via the fetch bridge`\n },\n { status: 501 }\n );\n }\n\n const response = await bridge(request);\n // The bridge buffers until end(), by which point the scenario has recorded\n // its checks and the write-through has started; finish it before the\n // isolate is allowed to go idle.\n await sessions.flush();\n return response;\n}\n",[],[138,488,520],"b14b49be-62d3-4e6f-832e-253eafc52650","valtown-store.ts","d1ffa5b6-ad13-11f1-8f33-1607ee4eb77e",["D",1789043606355],"/**\n * RunStore backed by val.town's per-account SQLite (REST API).\n *\n * val.town injects an API token into every val as the `valtown` env var; the\n * SQLite API is `POST /v1/sqlite/execute {statement:{sql,args}}`. Two tables,\n * created lazily once per isolate. Old runs are swept on new-run creation,\n * throttled per isolate, so the database stays bounded without a cron.\n */\n\nimport type { ConformanceCheck } from '../../src/types.ts';\nimport type { RunStore } from '../../src/hosted/store.ts';\n\nconst API = 'https://api.val.town/v1/sqlite/execute';\n\nexport interface SqliteRunStoreOptions {\n token?: string;\n /** Runs older than this are swept. Default 6h. */\n retentionMs?: number;\n /** Cap on checks persisted per (run, writer). Default 1000. */\n maxChecks?: number;\n}\n\ntype Row = unknown[];\n\nexport class SqliteRunStore implements RunStore {\n private readonly token: string;\n private readonly retentionMs: number;\n private readonly maxChecks: number;\n private ready: Promise | undefined;\n private lastSweep = 0;\n\n constructor(opts: SqliteRunStoreOptions = {}) {\n const token = opts.token ?? process.env.valtown;\n if (!token)\n throw new Error('SqliteRunStore: no val.town token (env valtown)');\n this.token = token;\n this.retentionMs =\n opts.retentionMs ??\n Number(process.env.CONFORMANCE_RUN_RETENTION_MS ?? 6 * 3600_000);\n this.maxChecks = opts.maxChecks ?? 1000;\n }\n\n private async exec(sql: string, args: unknown[] = []): Promise {\n const res = await fetch(API, {\n method: 'POST',\n headers: {\n Authorization: `Bearer ${this.token}`,\n 'Content-Type': 'application/json'\n },\n body: JSON.stringify({ statement: { sql, args } })\n });\n if (!res.ok) {\n throw new Error(\n `sqlite ${res.status}: ${(await res.text()).slice(0, 200)}`\n );\n }\n const body = (await res.json()) as { rows?: Row[] };\n return body.rows ?? [];\n }\n\n private init(): Promise {\n this.ready ??= (async () => {\n await this.exec(\n `CREATE TABLE IF NOT EXISTS hosted_runs_v2 (\n id TEXT PRIMARY KEY, scenario TEXT NOT NULL, created_at INTEGER NOT NULL)`\n );\n await this.exec(\n `CREATE TABLE IF NOT EXISTS hosted_checks_v2 (\n run_id TEXT NOT NULL, writer TEXT NOT NULL, checks TEXT NOT NULL,\n updated_at INTEGER NOT NULL, PRIMARY KEY (run_id, writer))`\n );\n })().catch((e) => {\n this.ready = undefined;\n throw e;\n });\n return this.ready;\n }\n\n async saveRun(id: string, scenarioName: string): Promise {\n await this.init();\n await this.exec(\n `INSERT INTO hosted_runs_v2 (id, scenario, created_at) VALUES (?, ?, ?)\n ON CONFLICT(id) DO UPDATE SET scenario = excluded.scenario`,\n [id, scenarioName, Date.now()]\n );\n void this.sweep().catch(() => {});\n }\n\n async loadRun(id: string): Promise {\n await this.init();\n const rows = await this.exec(\n `SELECT scenario FROM hosted_runs_v2 WHERE id = ?`,\n [id]\n );\n return rows[0]?.[0] as string | undefined;\n }\n\n async saveChecks(\n id: string,\n writer: string,\n checks: ConformanceCheck[]\n ): Promise {\n await this.init();\n await this.exec(\n `INSERT INTO hosted_checks_v2 (run_id, writer, checks, updated_at)\n VALUES (?, ?, ?, ?)\n ON CONFLICT(run_id, writer) DO UPDATE\n SET checks = excluded.checks, updated_at = excluded.updated_at`,\n [id, writer, JSON.stringify(checks.slice(-this.maxChecks)), Date.now()]\n );\n }\n\n async loadChecks(id: string): Promise> {\n await this.init();\n const rows = await this.exec(\n `SELECT writer, checks FROM hosted_checks_v2 WHERE run_id = ?`,\n [id]\n );\n const out = new Map();\n for (const [writer, checks] of rows) {\n try {\n out.set(writer as string, JSON.parse(checks as string));\n } catch {\n // corrupt row — ignore\n }\n }\n return out;\n }\n\n async deleteRun(id: string): Promise {\n await this.init();\n await this.exec(`DELETE FROM hosted_checks_v2 WHERE run_id = ?`, [id]);\n await this.exec(`DELETE FROM hosted_runs_v2 WHERE id = ?`, [id]);\n }\n\n private async sweep(): Promise {\n const now = Date.now();\n if (now - this.lastSweep < 5 * 60_000) return;\n this.lastSweep = now;\n const cutoff = now - this.retentionMs;\n await this.exec(\n `DELETE FROM hosted_checks_v2 WHERE run_id IN\n (SELECT id FROM hosted_runs_v2 WHERE created_at < ?)`,\n [cutoff]\n );\n await this.exec(`DELETE FROM hosted_runs_v2 WHERE created_at < ?`, [\n cutoff\n ]);\n }\n}\n",[],[138,488,528],"3c480d6a-84b6-44ba-8074-7a713ef574d2","fetch-bridge.ts","d2578a38-ad13-11f1-ad25-1607ee4eb77e",3,["D",1789043606991],"/**\n * Web fetch ↔ Node bridge: adapt a Node RequestListener (express app) to a\n * fetch-style handler for serverless runtimes (val.town, Deno Deploy, Bun).\n *\n * Intercepts the user-facing write surface (writeHead/setHeader/write/end)\n * so we never touch ServerResponse's socket-coupled internals — the approach\n * serverless-http and light-my-request take.\n */\n\nimport { IncomingMessage, ServerResponse } from 'node:http';\nimport { Socket } from 'node:net';\n\ntype NodeListener = (req: IncomingMessage, res: ServerResponse) => void;\n\nexport function toFetchHandler(\n listener: NodeListener\n): (request: Request) => Promise {\n return async (request: Request): Promise => {\n const url = new URL(request.url);\n\n // --- web Request → Node IncomingMessage ---\n const body = request.body\n ? Buffer.from(await request.arrayBuffer())\n : undefined;\n // Express's req.protocol/req.ip read socket.encrypted/.remoteAddress,\n // and IncomingMessage._destroy calls socket.destroy(), so a real\n // (unconnected) Socket with the encrypted flag patched on is the path\n // of least surprise.\n const socket = Object.assign(new Socket(), { encrypted: false });\n const nodeReq = new IncomingMessage(socket);\n nodeReq.method = request.method;\n nodeReq.url = url.pathname + url.search;\n nodeReq.httpVersion = '1.1';\n nodeReq.httpVersionMajor = 1;\n nodeReq.httpVersionMinor = 1;\n nodeReq.headers = Object.fromEntries(request.headers);\n nodeReq.headers.host ??= url.host;\n if (body?.length) nodeReq.headers['content-length'] = String(body.length);\n // The SDK's StreamableHTTPServerTransport converts Node→Web via\n // @hono/node-server, which reads rawHeaders (the [k,v,k,v,...] array),\n // not the parsed headers object. Deno's node:http compat exposes\n // rawHeaders as a getter-only accessor, so shadow it with an own\n // property instead of assigning.\n Object.defineProperty(nodeReq, 'rawHeaders', {\n value: Object.entries(nodeReq.headers).flat() as string[],\n writable: true,\n configurable: true\n });\n if (body?.length) nodeReq.push(body);\n nodeReq.push(null);\n\n // --- Node ServerResponse → web Response ---\n const nodeRes = new ServerResponse(nodeReq);\n const chunks: Buffer[] = [];\n let status = 200;\n const headers = new Headers();\n\n const captureHeaders = (h?: Record) => {\n for (const [k, v] of Object.entries(h ?? {})) {\n headers.set(k, Array.isArray(v) ? v.join(', ') : String(v));\n }\n };\n nodeRes.setHeader = ((k: string, v: string | string[] | number) => {\n headers.set(k, Array.isArray(v) ? v.join(', ') : String(v));\n return nodeRes;\n }) as ServerResponse['setHeader'];\n nodeRes.getHeader = (k: string) =>\n headers.get(k.toLowerCase()) ?? undefined;\n nodeRes.removeHeader = (k: string) => headers.delete(k);\n nodeRes.writeHead = ((code: number, h?: Record) => {\n status = code;\n captureHeaders(h);\n return nodeRes;\n }) as ServerResponse['writeHead'];\n nodeRes.write = ((c: string | Buffer, enc?: BufferEncoding) => {\n if (c) chunks.push(typeof c === 'string' ? Buffer.from(c, enc) : c);\n return true;\n }) as ServerResponse['write'];\n nodeRes.flushHeaders = () => {};\n Object.defineProperty(nodeRes, 'statusCode', {\n get: () => status,\n set: (v: number) => {\n status = v;\n }\n });\n\n return new Promise((resolve) => {\n nodeRes.end = ((c?: string | Buffer, enc?: BufferEncoding) => {\n if (c) chunks.push(typeof c === 'string' ? Buffer.from(c, enc) : c);\n resolve(\n new Response(chunks.length ? Buffer.concat(chunks) : null, {\n status,\n headers\n })\n );\n return nodeRes;\n }) as ServerResponse['end'];\n\n listener(nodeReq, nodeRes);\n });\n };\n}\n",[],[138,488,535],"e0d4ff66-2d0b-4b92-9d52-7466f5cd524c",["D",1789043605188],[156,157,158],[138,488],["D",1789043605188],[155],[138],["D",1789043604380],{"_95":94,"_102":-5},{"_95":94,"_96":97,"_98":-5,"_18":-5,"_99":100,"_101":24},{"_13":84,"_31":85,"_42":41,"_86":43,"_87":-5,"_88":-5,"_89":-5,"_90":-5,"_91":-5,"_92":44,"_93":94},"ctx",{"_77":-5,"_122":586,"_587":588,"_589":590,"_591":24,"_592":24,"_593":24,"_594":57,"_595":-5,"_596":-7,"_597":-7,"_598":61,"_599":24,"_600":24,"_601":-5,"_602":24,"_603":24,"_604":24,"_605":-5},"ENV",{"_557":558,"_559":560,"_561":85,"_562":563,"_564":565,"_566":567,"_568":569,"_570":571,"_572":573,"_574":575,"_576":577,"_578":579,"_580":581,"_582":583,"_584":585},"REACT_APP_SENTRY_DSN","https://586020d86f05489db63a554690acf1e9@o1398359.ingest.sentry.io/6724499","RENDER_GIT_COMMIT","e87eb04e707cf64e7e532c8e8ec395f209e17f15","RENDER_GIT_BRANCH","POSTHOG_API_TOKEN","phc_nmoyuAkStEZuUp69rYlg1DZgrIt19Gx0Y4Hwf8tGgJP","POSTHOG_API_HOST","https://wart.val.town","WEB_API_TEMPLATE","https://{val}.web.val.run","APP_URL","https://www.val.town","MODULE_URL","https://esm.town","VANITY_WEB_API_TEMPLATE","https://{label}.val.run/","DENOLS_URL","https://lsp.val.town","NODE_ENV","production","CLOUDFLARE_TURNSTILE_SITE_KEY","0x4AAAAAACtaIZJH7s9rBMZ6","GOOGLE_CLIENT_ID","875989696899-jtsqkhlbdv5jrlsk8631p7ipjg3c6o62.apps.googleusercontent.com","STRIPE_PUBLISHABLE_KEY","pk_live_51N2zvWEpZTTLipIkVEwXrUG9AT0yeOOEYxszarZT1jpsZV58Ly6wlg3SltZpHN26CUalOBmUSY7adQRQiSkCZz2500qSXNkf8Y","API_URL","https://api.val.town",[],"preferencesKeybindings","default","preferencesTheme","light","preferencesFixers","preferencesCopilot","preferencesSelectionAi","preferencesCloseBrackets","preferencesChatPanelState","preferencesDprint","preferencesDenofmt","notificationCount","flagDenols","isBusinessOrgMember","businessOrgHandle","isBusinessOrgAdmin","isHigherTownieTier","navCollapsed","currentOrgId"]

Hold on — this client led with initialize

MCP Checker — 2026-07-28

How it works

What is checked

Old clients

Try it

MCP Checker — Auth Chain

MCP Conformance — hosted

Scenarios (${scenarios.length})

Example

${pill} ${esc(c.id)} — ${esc(\n c.name\n )}

${esc(scenario)}

Hold on — this client led with `initialize`

${pill} `${esc(c.id)}` — ${esc(\n c.name\n )}

`${esc(scenario)}`

Diff · v38