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\n Fax · for AI agents\n

\n Your agent can send a fax now.\n

\n agentfax is a pay-per-fax HTTP API. No account, no API key, no dashboard. Your agent calls one\n endpoint, pays a few cents in USDC over{\" \"}\n \n x402\n , and the fax goes out — payable by Coinbase and Circle agents out of the box.\n

\n\n

\n ● {cfg.mode === \"x402\" ? \"x402 live\" : \"sandbox payments\"}\n {cfg.network}\n {cfg.price} / fax\n settled in {cfg.assetSymbol}\n {cfg.provider === \"phaxio\" ? \"live faxing\" : \"sandbox faxing\"}\n zero data retention\n

\n\n

\n \n Read the API\n \n \n See the 402 handshake\n \n

\n\n

\n \n {`$ curl -X POST ${cfg.baseUrl}/v1/fax \\\\\n -H 'content-type: application/json' \\\\\n -d '{\n \"to\": \"+14155550123\",\n \"file_url\": \"https://example.com/invoice.pdf\"\n }'`}\n \n \n {`HTTP/1.1 402 Payment Required\n\n${challenge}`}\n \n

\n An x402-aware client signs the USDC payment and retries automatically — your code just calls the\n endpoint and gets back a job id.\n

\n );\n}\n","/** @jsxImportSource https://esm.sh/react@18.2.0 */\nimport { type Cfg, CodeBlock, Eyebrow, Pill, Section } from \"./ui.tsx\";\n\nfunction shorten(addr: string) {\n return addr && addr.length > 12 ? `${addr.slice(0, 6)}…${addr.slice(-4)}` : addr;\n}\n\nexport function Hero({ cfg }: { cfg: Cfg }) {\n const agentPrompt =\n `You can send a real fax through agentfax — a pay-per-fax HTTP API for AI agents. ` +\n `Read ${cfg.baseUrl}/v1/info to learn the endpoints, parameters, and pricing ` +\n `(and ${cfg.baseUrl} for more context). It's paid per call over Tempo/MPP (USDC.e over HTTP 402), ` +\n `so use your wallet to pay. Once you understand the API, send a test fax for me.`;\n const enc = encodeURIComponent(agentPrompt);\n\n return (\n

\n Fax · for AI agents\n

\n Your agent can send a fax now.\n

\n agentfax is a pay-per-fax HTTP API. No account, no API key, no dashboard. Your agent calls one\n endpoint, pays a few cents in {cfg.assetSymbol} over{\" \"}\n \n Tempo/MPP\n , and the fax goes out — pay it in one line with the Tempo CLI.\n

\n\n

\n ● MPP live\n Tempo mainnet\n {cfg.price} / fax\n settled in {cfg.assetSymbol}\n {cfg.provider === \"phaxio\" ? \"live faxing\" : \"sandbox faxing\"}\n zero data retention\n

\n\n

\n \n Copy prompt for your agent\n \n \n Open in ChatGPT\n \n \n Open in Claude\n \n

\n Paste it into Claude, ChatGPT, Cursor — any agent with a Tempo wallet. Or{\" \"}\n read the API\n {\" · \"}\n see the 402.\n

\n\n

\n \n {`$ tempo request -X POST ${cfg.baseUrl}/v1/fax \\\\\n --json '{\n \"to\": \"+14155550123\",\n \"file_url\": \"https://example.com/invoice.pdf\"\n }'`}\n \n \n {`HTTP/1.1 402 Payment Required\nWWW-Authenticate: Payment\n method=\"tempo\", intent=\"charge\",\n amount=\"500000\" // ${cfg.price} in ${cfg.assetSymbol}\n currency=\"0x20C0…60E8b50\" // ${cfg.assetSymbol}\n recipient=\"${shorten(cfg.payTo)}\"\n chainId=4217 // Tempo mainnet`}\n \n

\n The Tempo CLI (or any MPP client) reads the challenge, pays in {cfg.assetSymbol}, and retries\n automatically — your code just gets back a job id.\n

\n );\n}\n","createdAt",["D",1780070278491],"branchVersion","branchId","dbdd6128-5b69-11f1-a7a0-ee650bb23af1","id","dbdc95e0-5b69-11f1-a7a0-ee650bb23af1","agentfax",["D",1780064564355],"deletedAt","legacyEnvVars","privacy","public","httpPrivacy","description","Fax API for AI agents — paid per fax over x402 (USDC)","imageUrl","a0bf3b31-15a5-4d5c-880e-4b1e22c9bc18","pinnedFileId","dbe07a02-5b69-11f1-a7a0-ee650bb23af1","pinPreview",true,"pinMigrated","screenshotVersion","likeCount",0,"orgId","e81e7335-6d4c-4764-a902-d0962bbfa9f7","tursoName","dbdc95e05b6911f1a7a0ee650bb23af1","tursoHostname","dbdc95e05b6911f1a7a0ee650bb23af1-val-town.aws-us-east-2.turso.io","tursoMeasuredAt",["D",1789500689328],"pinned","userPerm","r","valPerm","blobPerm","rw","emailPerm","sqlitePerm","projectPerm","telemetryPerm","user",{"_101":100,"_108":104},"org",{"_101":100,"_102":-5,"_103":104,"_18":56,"_105":106,"_107":25},"branch",{"_13":90,"_32":91,"_44":43,"_92":45,"_93":-5,"_94":-5,"_95":-5,"_96":-5,"_97":-5,"_98":46,"_99":100},"isOwned",150,"main","projectId","forkedBranchId","forkedBranchVersion","forkedProjectPrivacy","forkedProjectId","forkedProjectOrgId","projectName","userHandle","stevekrouse","handle","displayName","avatar","https://images.clerk.dev/uploaded/img_2PqHa2Gsy93xQrjh2w78Xu0cChW.jpeg","tier","pro","canRestrictVals","profileImageUrl","branchName","","adoptOrgId",{"_44":45,"_32":46,"_39":297,"_48":-5,"_49":25,"_50":51,"_52":51,"_53":54,"_55":-5,"_18":56,"_57":58,"_59":60,"_61":-5,"_62":-5,"_63":64,"_65":66,"_67":68,"_69":70,"_71":298,"_73":-5,"_74":75,"_76":75,"_77":78,"_79":78,"_80":78,"_81":75,"_82":75,"_83":299,"_85":300,"_87":301,"_89":25},"tree",[196,206,207,208,209,210],"files",[196,197,198,199,200,201,202,203,204,205,206,207,208,209,210],"counts",{"_185":64,"_186":168,"_187":144,"_188":189,"_190":191},"contents",[131,132,133,134,135,136],"upstreamProject","upstreamBranch","emptyEnvVars","flags",[],"hasHttpFiles","grants","orgs","customDomains",{},{"_44":178,"_32":179,"_30":180,"_140":-5,"_42":43,"_41":181,"_142":60,"_39":182,"_13":64,"_34":183,"_36":-5,"_24":25,"_146":-5,"_27":184},{"_44":171,"_32":172,"_30":173,"_140":-5,"_42":43,"_41":174,"_142":25,"_39":175,"_13":159,"_34":20,"_36":176,"_24":25,"_146":-5,"_27":177},{"_44":163,"_32":164,"_30":165,"_140":-5,"_42":43,"_41":166,"_142":25,"_39":167,"_13":168,"_34":35,"_36":169,"_24":25,"_146":-5,"_27":170},{"_44":155,"_32":156,"_30":58,"_140":-5,"_42":43,"_41":157,"_142":25,"_39":158,"_13":159,"_34":160,"_36":161,"_24":25,"_146":46,"_27":162},{"_44":148,"_32":149,"_30":150,"_140":-5,"_42":43,"_41":151,"_142":25,"_39":152,"_13":144,"_34":35,"_36":153,"_24":25,"_146":-5,"_27":154},{"_44":137,"_32":138,"_30":139,"_140":-5,"_42":43,"_41":141,"_142":60,"_39":143,"_13":144,"_34":35,"_36":145,"_24":25,"_146":-5,"_27":147},"e9c5fbcc-5b75-11f1-97dd-ee650bb23af1","payment.ts","0e7d6c72-5b6a-11f1-9d84-ee650bb23af1","parentId",42,"latest",["D",1780069741640],2,"// x402 payment wiring.\n//\n// One standard x402 endpoint (USDC, `exact` scheme) is payable by Coinbase\n// x402 agents, Circle agent wallets, and Tempo/MPP agents alike. We gate\n// `POST /v1/fax` with the official x402-hono middleware, which encodes the\n// correct per-network USDC EIP-712 domain so any compliant client can pay.\n//\n// Config (all optional — sane defaults so it runs out of the box):\n// FAX_PAYMENT_MODE \"x402\" (default) | \"sandbox\" (skip payment, for testing)\n// FAX_NETWORK \"base-sepolia\" (default, keyless facilitator) | \"base\"\n// FAX_PRICE_USD \"$0.50\" (default), price per fax\n// FAX_PAYTO_ADDRESS 0x... wallet that receives the USDC\n// CDP_API_KEY_ID / CDP_API_KEY_SECRET required only when FAX_NETWORK=\"base\"\nimport type { Hono } from \"npm:hono\";\nimport { paymentMiddleware } from \"npm:x402-hono\";\n\nexport type PaymentMode = \"x402\" | \"sandbox\";\n\nexport const USDC: Record = {\n \"base\": { address: \"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913\", decimals: 6 },\n \"base-sepolia\": { address: \"0x036CbD53842c5426634e7929541eC2318f3dCF7e\", decimals: 6 },\n};\n\nexport function paymentMode(): PaymentMode {\n return (Deno.env.get(\"FAX_PAYMENT_MODE\") || \"x402\").toLowerCase() === \"sandbox\"\n ? \"sandbox\"\n : \"x402\";\n}\n\nfunction hasUsableCdpKey(): boolean {\n const id = Deno.env.get(\"CDP_API_KEY_ID\");\n const secret = Deno.env.get(\"CDP_API_KEY_SECRET\") || \"\";\n // Real CDP secrets are PEM EC keys or long base64 Ed25519 keys. Reject short/malformed.\n return !!id && (secret.includes(\"BEGIN\") || secret.length >= 50);\n}\n\nexport function network(): string {\n const n = Deno.env.get(\"FAX_NETWORK\") || \"base-sepolia\";\n // Mainnet settlement needs a valid CDP facilitator key. If it's missing or\n // malformed, fall back to the keyless Base Sepolia facilitator so the service\n // keeps working — and auto-upgrades to mainnet once a valid key is set.\n if (n === \"base\" && !hasUsableCdpKey()) return \"base-sepolia\";\n return n;\n}\n\nexport function priceUsd(): string {\n const p = Deno.env.get(\"FAX_PRICE_USD\") || \"$0.50\";\n return p.startsWith(\"$\") ? p : `$${p}`;\n}\n\nexport function payToAddress(): string {\n // Default to Steve's known EVM address; override per-deployment.\n return Deno.env.get(\"FAX_PAYTO_ADDRESS\") || \"0xd6f0870b8e1c6af8d712cc506ccf5e96ac040592\";\n}\n\nexport function facilitatorUrl(): string {\n return network() === \"base\"\n ? \"https://api.cdp.coinbase.com/platform/v2/x402\"\n : \"https://x402.org/facilitator\";\n}\n\n/** Public, machine-readable description of how to pay this service. */\nexport function paymentInfo() {\n const net = network();\n return {\n protocol: \"x402\",\n x402Version: 1,\n scheme: \"exact\",\n network: net,\n asset: { symbol: \"USDC\", address: USDC[net]?.address ?? null, decimals: 6 },\n price: priceUsd(),\n payTo: payToAddress(),\n facilitator: facilitatorUrl(),\n mode: paymentMode(),\n payableBy: [\"coinbase-x402\", \"circle-agent-wallets\"],\n };\n}\n\nconst ROUTE_CONFIG = {\n price: priceUsd(),\n network: network(),\n config: {\n description: \"Send a fax to any phone number. Billed once per fax.\",\n mimeType: \"application/json\",\n maxTimeoutSeconds: 120,\n outputSchema: {\n type: \"object\",\n properties: {\n id: { type: \"string\" },\n status: { type: \"string\", enum: [\"queued\", \"sending\", \"delivered\", \"failed\"] },\n to: { type: \"string\" },\n },\n },\n },\n};\n\n/** Install x402 payment gating on POST /v1/fax (no-op in sandbox mode). */\nexport async function installPayment(app: Hono): Promise {\n if (paymentMode() === \"sandbox\") return;\n\n let facilitator: { url: string } | unknown = { url: facilitatorUrl() };\n if (network() === \"base\") {\n // CDP facilitator helper reads CDP_API_KEY_ID / CDP_API_KEY_SECRET.\n const mod = await import(\"npm:@coinbase/x402\");\n facilitator = mod.facilitator;\n }\n\n app.use(\n paymentMiddleware(\n payToAddress() as `0x${string}`,\n { \"POST /v1/fax\": ROUTE_CONFIG },\n facilitator as any,\n ),\n );\n}\n\n/** Decode the x402 X-PAYMENT header to learn who paid (best-effort). */\nexport function decodePayer(header: string | undefined): { payer: string | null; network: string | null } {\n if (!header) return { payer: null, network: null };\n try {\n const payload = JSON.parse(atob(header));\n return {\n payer: payload?.payload?.authorization?.from ?? null,\n network: payload?.network ?? null,\n };\n } catch {\n return { payer: null, network: null };\n }\n}\n","label",[138],"f8714e00-5b76-11f1-b52f-ee650bb23af1","mpp.ts","c2760d68-5b76-11f1-9a34-ee650bb23af1",50,["D",1780070195511],"// Tempo / MPP payment rail — mainnet (chain 4217), USDC.e.\n//\n// mppx settles directly against the Tempo RPC, so there's NO facilitator key to\n// manage. The server just needs a recipient address + an HMAC secret\n// (MPP_SECRET_KEY). Pay it in one line with the Tempo CLI:\n// tempo request -X POST --json '{...}' /v1/fax\nimport { Mppx, tempo } from \"npm:mppx@0.6.28/hono\";\nimport { privateKeyToAccount } from \"npm:viem/accounts\";\n\nexport const USDC_E = {\n symbol: \"USDC.e\",\n address: \"0x20C000000000000000000000b9537d11c60E8b50\",\n decimals: 6,\n};\n\nexport function priceUsd(): string {\n return (Deno.env.get(\"FAX_PRICE_USD\") || \"0.50\").replace(/^\\$/, \"\");\n}\n\nexport function recipient(): string {\n return Deno.env.get(\"TEMPO_RECIPIENT\") || \"0xed5bd29c47d40a054591b18cc2142cea8ab7c18a\";\n}\n\nfunction signer() {\n const k = Deno.env.get(\"MPP_SIGNER_KEY\");\n return k ? privateKeyToAccount(k as `0x${string}`) : undefined;\n}\n\nlet _client: ReturnType | null = null;\nfunction client() {\n // secretKey is read from MPP_SECRET_KEY; mainnet + USDC.e are the tempo() defaults.\n // `account` is a server signer that tempo() requires (for session settlement);\n // one-shot charge doesn't sign with it — it verifies the client's on-chain tx.\n _client ??= Mppx.create({ methods: [tempo({ recipient: recipient(), account: signer() })] });\n return _client;\n}\n\n/** Hono middleware that gates a route behind a Tempo/MPP charge. Lazily inits\n * so a config error only affects this route, not the whole val. */\nexport function chargeFax() {\n let mw: ReturnType[\"charge\"]> | null = null;\n return (c: any, next: any) => {\n mw ??= client().charge({ amount: priceUsd() });\n return mw(c, next);\n };\n}\n\nexport function paymentInfo() {\n const r = recipient();\n return {\n protocol: \"mpp\",\n method: \"tempo\",\n network: \"tempo\",\n chainId: 4217,\n asset: USDC_E,\n price: `$${priceUsd()}`,\n recipient: r,\n payTo: r, // alias for UI compatibility\n facilitator: \"none (settles via Tempo RPC)\",\n mode: \"mpp\",\n payableBy: [\"tempo-mpp\"],\n };\n}\n",[149],"cb56b9f0-5b76-11f1-88fa-ee650bb23af1","main.ts",46,["D",1780070120080],4,"http","// agentfax — a fax API for AI agents, paid per fax over Tempo/MPP (USDC.e).\n//\n// No signup, no API key: an agent calls POST /v1/fax, gets back a 402 with an\n// MPP \"Payment\" challenge, pays in USDC.e on Tempo, and the fax goes out.\n// Pay in one line with the Tempo CLI:\n// tempo request -X POST --json '{...}' /v1/fax\n//\n// Stateless by design: we forward the document to the fax network and keep\n// nothing — no destination numbers, no documents, no payer data. Status is\n// read live from the provider via a provider-namespaced job id.\nimport { Hono } from \"npm:hono\";\nimport { parseVal, serveFile } from \"https://esm.town/v/std/utils/index.ts\";\nimport { activeProvider, decodeJobId, getStatus, sendFax, validateInput } from \"./fax.ts\";\nimport { chargeFax, paymentInfo, priceUsd } from \"./mpp.ts\";\nimport { renderPage } from \"./frontend/render.tsx\";\n\nconst app = new Hono();\n\nconst origin = (c: { req: { url: string } }) => new URL(c.req.url).origin;\n\n// --- Landing page (SSR) -----------------------------------------------------\napp.get(\"/\", (c) =>\n c.html(renderPage({\n baseUrl: origin(c),\n payment: paymentInfo(),\n provider: activeProvider(),\n price: priceUsd(),\n })));\n\n// View source (required for Val Town UIs)\napp.get(\"/source\", (c) => c.redirect(parseVal().links.self.val));\n\n// Static frontend assets (favicon, client demo script)\napp.get(\"/frontend/*\", (c) => serveFile(c.req.path));\n\n// --- Discovery manifest -----------------------------------------------------\nfunction manifest(base: string) {\n return {\n name: \"agentfax\",\n description: \"Send a fax to any phone number. Paid per fax in USDC.e over Tempo/MPP — no signup, no API key.\",\n data_retention: \"none — documents and numbers are forwarded to the fax network and not stored\",\n payment: paymentInfo(),\n endpoints: {\n send_fax: {\n method: \"POST\",\n path: \"/v1/fax\",\n paid: true,\n body: {\n to: \"string (E.164, e.g. +14155550123) — required\",\n file_url: \"string (public PDF URL) — provide this or content_base64\",\n content_base64: \"string (base64 document bytes)\",\n file_name: \"string (optional, used with content_base64)\",\n metadata: \"object (optional, echoed back, not stored)\",\n },\n returns: { id: \"string\", status: \"queued|sending|delivered|failed\", to: \"string\" },\n },\n get_fax: { method: \"GET\", path: \"/v1/fax/{id}\", paid: false, note: \"live status from the fax network\" },\n info: { method: \"GET\", path: \"/v1/info\", paid: false },\n },\n example: {\n tempo_cli: `tempo request -X POST --json '{\"to\":\"+14155550123\",\"file_url\":\"https://example.com/doc.pdf\"}' ${base}/v1/fax`,\n curl: `curl -X POST ${base}/v1/fax -H 'content-type: application/json' -d '{\"to\":\"+14155550123\",\"file_url\":\"https://example.com/doc.pdf\"}'`,\n note: \"Without payment this returns HTTP 402 with an MPP 'Payment' challenge. The Tempo CLI (or any MPP client) pays in USDC.e and retries automatically.\",\n },\n };\n}\napp.get(\"/v1/info\", (c) => c.json(manifest(origin(c))));\n\n// llms.txt — point agents at the manifest so they can self-onboard.\napp.get(\"/llms.txt\", (c) => {\n const base = origin(c);\n return c.text(\n `# agentfax\n\n> A pay-per-fax HTTP API for AI agents. Send a fax to any phone number and pay per fax in USDC.e over Tempo/MPP — no signup, no API key. Stateless: documents are forwarded to the fax network and never stored.\n\n## Docs\n- [Machine-readable manifest](${base}/v1/info): payment terms (network, asset, price, recipient), the request schema, and a ready-to-run example.\n- [Homepage](${base}/): overview and a live payment demo.\n\n## Using it\n- POST ${base}/v1/fax with {\"to\":\"+14155550123\",\"file_url\":\"https://.../doc.pdf\"}. An unpaid request returns HTTP 402 with an MPP Payment challenge; pay with the Tempo CLI (\\`tempo request\\`) or any MPP client and retry.\n- GET ${base}/v1/fax/{id}: live delivery status.\n`,\n 200,\n { \"content-type\": \"text/plain; charset=utf-8\" },\n );\n});\n\n// --- Read fax status (free, proxied live — we hold no state) ----------------\napp.get(\"/v1/fax/:id\", async (c) => {\n const id = c.req.param(\"id\");\n if (!decodeJobId(id)) return c.json({ error: \"bad_id\", id }, 400);\n const s = await getStatus(id).catch(() => null);\n if (!s) return c.json({ error: \"not_found\", id }, 404);\n return c.json({\n id,\n status: s.status,\n pages: s.pages,\n error: s.error ?? null,\n _links: { self: `${origin(c)}/v1/fax/${id}` },\n });\n});\n\n// --- Send a fax (paid via Tempo/MPP) ----------------------------------------\napp.post(\"/v1/fax\", chargeFax(), async (c) => {\n let body: Record = {};\n try {\n body = await c.req.json();\n } catch {\n return c.json({ error: \"invalid_json\", message: \"Request body must be JSON.\" }, 400);\n }\n\n const input = {\n to: String(body.to ?? \"\"),\n fileUrl: body.file_url ? String(body.file_url) : undefined,\n contentBase64: body.content_base64 ? String(body.content_base64) : undefined,\n fileName: body.file_name ? String(body.file_name) : undefined,\n };\n\n const validationError = validateInput(input);\n if (validationError) return c.json({ error: \"invalid_request\", message: validationError }, 400);\n\n const result = await sendFax(input);\n if (!result.jobId && result.status === \"failed\") {\n return c.json({ error: \"provider_error\", message: result.error ?? \"Failed to submit fax.\" }, 502);\n }\n\n return c.json({\n id: result.jobId,\n status: result.status,\n to: input.to,\n pages: result.pages,\n provider: result.provider,\n price_usd: `$${priceUsd()}`,\n error: result.error ?? null,\n metadata: body.metadata ?? undefined,\n created_at: new Date().toISOString(),\n _links: { self: `${origin(c)}/v1/fax/${result.jobId}` },\n }, 200);\n});\n\n// Unwrap Hono errors so logs show real stack traces.\napp.onError((err) => Promise.reject(err));\n\nexport default app.fetch;\n",[156],"987c78dc-5b6a-11f1-9a58-ee650bb23af1","fax.ts","fb07a1c6-5b69-11f1-aa33-ee650bb23af1",6,["D",1780064880798],1,"// Pluggable, stateless fax backend.\n//\n// agentfax stores NOTHING: we forward the document to the fax network, hand\n// back a job id, and drop the payload. Status is read live from the provider.\n//\n// Live: Phaxio / Sinch Fax API (set PHAXIO_API_KEY + PHAXIO_SECRET).\n// Otherwise: a deterministic sandbox that simulates sending so the full\n// pay -> fax loop is demoable without a fax account.\n\nexport type FaxStatus = \"queued\" | \"sending\" | \"delivered\" | \"failed\";\nexport type Provider = \"phaxio\" | \"sandbox\";\n\nexport interface FaxInput {\n to: string;\n fileUrl?: string; // public URL to a PDF (preferred — Phaxio fetches it)\n contentBase64?: string; // base64-encoded document bytes\n fileName?: string; // used with contentBase64\n}\n\nexport interface FaxSendResult {\n provider: Provider;\n jobId: string; // opaque, provider-namespaced id we hand back to the caller\n status: FaxStatus;\n pages: number | null;\n error?: string;\n}\n\nexport function activeProvider(): Provider {\n return Deno.env.get(\"PHAXIO_API_KEY\") && Deno.env.get(\"PHAXIO_SECRET\")\n ? \"phaxio\"\n : \"sandbox\";\n}\n\n// --- Input handling ---------------------------------------------------------\n\n/** Normalize loose input into E.164-ish digits for validation. */\nexport function normalizeNumber(to: string): string {\n const digits = to.trim().replace(/[^\\d+]/g, \"\");\n if (digits.startsWith(\"+\")) return digits;\n if (/^\\d{10}$/.test(digits)) return \"+1\" + digits; // bare NANP\n if (/^1\\d{10}$/.test(digits)) return \"+\" + digits;\n return \"+\" + digits;\n}\n\nexport function validateInput(input: FaxInput): string | null {\n if (!input.to || normalizeNumber(input.to).replace(/\\D/g, \"\").length < 8) {\n return \"`to` must be a valid phone number in E.164 format, e.g. +14155550123\";\n }\n if (!input.fileUrl && !input.contentBase64) {\n return \"Provide a document via `file_url` (a public PDF URL) or `content_base64`.\";\n }\n if (input.fileUrl && !/^https?:\\/\\//.test(input.fileUrl)) {\n return \"`file_url` must be an http(s) URL.\";\n }\n return null;\n}\n\n// --- Job id (provider-namespaced, carries no payload) -----------------------\n\nexport function encodeJobId(provider: Provider, providerRef: string): string {\n return `${provider === \"phaxio\" ? \"pxo\" : \"sbx\"}_${providerRef}`;\n}\n\nexport function decodeJobId(id: string): { provider: Provider; ref: string } | null {\n const i = id.indexOf(\"_\");\n if (i < 0) return null;\n const prefix = id.slice(0, i);\n const ref = id.slice(i + 1);\n if (prefix === \"pxo\") return { provider: \"phaxio\", ref };\n if (prefix === \"sbx\") return { provider: \"sandbox\", ref };\n return null;\n}\n\n// --- Send -------------------------------------------------------------------\n\nexport async function sendFax(input: FaxInput): Promise {\n return activeProvider() === \"phaxio\" ? sendViaPhaxio(input) : sendViaSandbox(input);\n}\n\n/** Live status lookup — no local state. */\nexport async function getStatus(\n jobId: string,\n): Promise<{ status: FaxStatus; pages: number | null; error?: string } | null> {\n const decoded = decodeJobId(jobId);\n if (!decoded) return null;\n return decoded.provider === \"phaxio\"\n ? phaxioStatus(decoded.ref)\n : sandboxStatus(decoded.ref);\n}\n\n// --- Phaxio (Sinch Fax API) -------------------------------------------------\n\nfunction phaxioAuthHeader(): string {\n const key = Deno.env.get(\"PHAXIO_API_KEY\")!;\n const secret = Deno.env.get(\"PHAXIO_SECRET\")!;\n return \"Basic \" + btoa(`${key}:${secret}`);\n}\n\nasync function sendViaPhaxio(input: FaxInput): Promise {\n const form = new FormData();\n form.append(\"to\", normalizeNumber(input.to));\n if (input.fileUrl) {\n form.append(\"content_url\", input.fileUrl);\n } else if (input.contentBase64) {\n const blob = new Blob([base64ToBytes(input.contentBase64)], { type: \"application/pdf\" });\n form.append(\"file\", blob, input.fileName || \"document.pdf\");\n }\n\n const res = await fetch(\"https://api.phaxio.com/v2/faxes\", {\n method: \"POST\",\n headers: { Authorization: phaxioAuthHeader() },\n body: form,\n });\n const json = await res.json().catch(() => ({}));\n\n if (!res.ok || json?.success === false || !json?.data?.id) {\n return {\n provider: \"phaxio\",\n jobId: \"\",\n status: \"failed\",\n pages: null,\n error: json?.message || `Phaxio error (HTTP ${res.status})`,\n };\n }\n return {\n provider: \"phaxio\",\n jobId: encodeJobId(\"phaxio\", String(json.data.id)),\n status: \"sending\",\n pages: json.data.num_pages ?? null,\n };\n}\n\nasync function phaxioStatus(\n ref: string,\n): Promise<{ status: FaxStatus; pages: number | null; error?: string }> {\n const res = await fetch(`https://api.phaxio.com/v2/faxes/${encodeURIComponent(ref)}`, {\n headers: { Authorization: phaxioAuthHeader() },\n });\n const json = await res.json().catch(() => ({}));\n const d = json?.data ?? {};\n return { status: mapPhaxioStatus(d.status), pages: d.num_pages ?? null, error: d.error_type || undefined };\n}\n\nexport function mapPhaxioStatus(s: string | undefined): FaxStatus {\n switch (s) {\n case \"success\":\n case \"partialsuccess\":\n return \"delivered\";\n case \"failure\":\n return \"failed\";\n case \"queued\":\n case \"pending\":\n return \"queued\";\n default:\n return \"sending\"; // \"inprogress\" + unknowns\n }\n}\n\n// --- Sandbox (stateless: outcome is encoded in the job ref) -----------------\n\n// Magic destinations that simulate a delivery failure (for testing).\nconst SANDBOX_FAIL_NUMBERS = new Set([\"+15550000000\", \"+10000000000\"]);\n\nfunction sendViaSandbox(input: FaxInput): FaxSendResult {\n const to = normalizeNumber(input.to);\n const status: FaxStatus = SANDBOX_FAIL_NUMBERS.has(to) ? \"failed\" : \"delivered\";\n const ref = `${status}.${crypto.randomUUID().slice(0, 8)}`;\n return {\n provider: \"sandbox\",\n jobId: encodeJobId(\"sandbox\", ref),\n status,\n pages: status === \"delivered\" ? 1 : null,\n error: status === \"failed\" ? \"no_answer (simulated)\" : undefined,\n };\n}\n\nfunction sandboxStatus(ref: string): { status: FaxStatus; pages: number | null; error?: string } {\n const status = (ref.split(\".\")[0] as FaxStatus) || \"delivered\";\n return {\n status,\n pages: status === \"delivered\" ? 1 : null,\n error: status === \"failed\" ? \"no_answer (simulated)\" : undefined,\n };\n}\n\nfunction base64ToBytes(b64: string): Uint8Array {\n const bin = atob(b64.replace(/^data:.*;base64,/, \"\"));\n const out = new Uint8Array(bin.length);\n for (let i = 0; i < bin.length; i++) out[i] = bin.charCodeAt(i);\n return out;\n}\n",[164],"8f687a58-5b73-11f1-912b-ee650bb23af1","README.md","954e2682-5b6b-11f1-b802-ee650bb23af1",34,["D",1780068731019],"# agentfax\n\nA fax API for AI agents — **paid per fax over [x402](https://x402.org) (USDC)**. No signup, no\nAPI key, no dashboard. An agent calls one endpoint, gets a `402 Payment Required` with payment\nterms, pays in USDC, and the fax goes out. It's \"AgentMail, but for faxes.\"\n\nOne standard x402 endpoint is payable by **Coinbase x402 agents, Circle agent wallets, and\nTempo/MPP agents** — no per-network code.\n\n## Why it's interesting\n\n- **Permissionless monetization.** You don't apply to a marketplace. You stand up an HTTP endpoint\n that returns 402 with payment terms and a receiving wallet address; any x402 client can pay it.\n- **Stateless / zero data retention.** agentfax forwards the document to the fax network and keeps\n nothing — no DB, no blob store, no logs of numbers or contents. The job id it returns is a thin\n pointer to the carrier. Better security posture, and one less thing to operate.\n- **Pluggable backend.** Real faxing via [Phaxio](https://www.phaxio.com) when keys are set;\n otherwise a deterministic **sandbox** that simulates sending so the whole pay→fax loop works with\n zero setup.\n\n## Endpoints\n\n| Method | Path | Paid | Description |\n|--------|------|------|-------------|\n| `POST` | `/v1/fax` | ✅ x402 | Send a fax. Returns `402` until paid, then a job id. |\n| `GET` | `/v1/fax/{id}` | free | Live delivery status (proxied from the carrier). |\n| `GET` | `/v1/info` | free | Machine-readable manifest (price, network, schema, example). |\n| `GET` | `/.well-known/x402` | free | x402 payment terms. |\n\n### Send a fax\n\n```bash\ncurl -X POST https://agentfax.val.run/v1/fax \\\n -H 'content-type: application/json' \\\n -d '{ \"to\": \"+14155550123\", \"file_url\": \"https://example.com/invoice.pdf\" }'\n```\n\n`to` is required (E.164). Provide the document as either `file_url` (a public PDF URL — easiest) or\n`content_base64` (+ optional `file_name`). `metadata` is optional, echoed back, and not stored.\n\nUnpaid, this returns `402` with an `accepts[]` block. An x402 client signs the USDC payment and\nretries automatically:\n\n```js\n// any x402 client works — e.g. x402-fetch + viem\nimport { wrapFetchWithPayment } from \"npm:x402-fetch\";\nimport { privateKeyToAccount } from \"npm:viem/accounts\";\n\nconst pay = wrapFetchWithPayment(fetch, privateKeyToAccount(process.env.WALLET_KEY));\nconst res = await pay(\"https://agentfax.val.run/v1/fax\", {\n method: \"POST\",\n headers: { \"content-type\": \"application/json\" },\n body: JSON.stringify({ to: \"+14155550123\", file_url: \"https://example.com/doc.pdf\" }),\n});\n```\n\nCircle agent wallets can pay the same endpoint — Circle speaks standard x402 on Base USDC. (Tempo is a separate MPP rail on its own L1 with USDC.e, and isn't wired yet.)\n\n```bash\ncircle services pay --method POST --json '{\"to\":\"+14155550123\",\"file_url\":\"https://…/doc.pdf\"}' \\\n https://agentfax.val.run/v1/fax\n```\n\n## Configuration\n\nEverything has a sane default — it runs out of the box on **Base Sepolia testnet** with the keyless\n`x402.org` facilitator and the **sandbox** fax backend.\n\n| Env var | Default | Purpose |\n|---------|---------|---------|\n| `FAX_PAYTO_ADDRESS` | a demo address | The wallet that **receives** the USDC. |\n| `FAX_NETWORK` | `base-sepolia` | `base-sepolia` (testnet, keyless) or `base` (mainnet). |\n| `FAX_PRICE_USD` | `$0.50` | Price per fax. |\n| `FAX_PAYMENT_MODE` | `x402` | Set to `sandbox` to disable payment (testing). |\n| `PHAXIO_API_KEY` / `PHAXIO_SECRET` | unset → sandbox | Enable real faxing via Phaxio. |\n| `CDP_API_KEY_ID` / `CDP_API_KEY_SECRET` | unset | Needed only when `FAX_NETWORK=base` (CDP facilitator). |\n\n### Set the receiving wallet (do this for real money)\n\nThe default `payTo` is a placeholder. Point it at an address **you control on the settlement\nchain**:\n\n👉 Add FAX_PAYTO_ADDRESS here: https://www.val.town/x/stevekrouse/agentfax/environment-variables?key=FAX_PAYTO_ADDRESS\n\n### Go live with real faxes (Phaxio)\n\nSign up at https://console.phaxio.com (instant, pay-as-you-go ~7¢/page, no number needed to send),\nthen set both keys — the backend auto-switches from sandbox to live:\n\n👉 Add PHAXIO_API_KEY here: https://www.val.town/x/stevekrouse/agentfax/environment-variables?key=PHAXIO_API_KEY\n\n👉 Add PHAXIO_SECRET here: https://www.val.town/x/stevekrouse/agentfax/environment-variables?key=PHAXIO_SECRET\n\n### Go to mainnet (real USDC, broadest agent reach)\n\nSet `FAX_NETWORK=base`, then add CDP facilitator credentials (free at\nhttps://portal.cdp.coinbase.com — settling through CDP also auto-lists you in the\n[x402 Bazaar](https://docs.cdp.coinbase.com/x402/bazaar)):\n\n👉 Add FAX_NETWORK here: https://www.val.town/x/stevekrouse/agentfax/environment-variables?key=FAX_NETWORK\n\n👉 Add CDP_API_KEY_ID here: https://www.val.town/x/stevekrouse/agentfax/environment-variables?key=CDP_API_KEY_ID\n\n👉 Add CDP_API_KEY_SECRET here: https://www.val.town/x/stevekrouse/agentfax/environment-variables?key=CDP_API_KEY_SECRET\n\n## Files\n\n- `index.ts` — Hono server: routes, x402 gate, SSR landing page.\n- `payment.ts` — x402 config + `x402-hono` middleware (testnet/mainnet, sandbox toggle).\n- `fax.ts` — stateless fax backend (Phaxio + sandbox), job-id codec, live status.\n- `frontend/` — SSR React + Twind landing page (`render.tsx`, `App.tsx`, `components/`, `demo.js`).\n\n## How payment works\n\n1. Agent `POST`s to `/v1/fax` with no payment → `402` listing the `exact` USDC amount, network,\n asset, and `payTo`.\n2. The agent's wallet signs a gasless EIP-3009 `transferWithAuthorization` and retries with an\n `X-PAYMENT` header.\n3. A **facilitator** verifies and settles on-chain (the agent pays no gas; agentfax holds no private\n key — only a receiving address). The fax is forwarded; a job id is returned.\n\nBuilt on [Val Town](https://val.town). Faxes via Phaxio. Payments via [x402](https://x402.org).\n",[172],"d94cf8b4-5b6a-11f1-8821-ee650bb23af1","frontend","9e1c8bb4-274b-4708-8b6c-c29d6ea270c2",8,["D",1780064989545],"directory",[179],"pulls","branches","forks","envVars",{"_192":194,"_195":64},"connections",{"_192":64,"_193":64},"count","unfilledCount",13,"emptyCount",{"_44":178,"_32":179,"_30":180,"_140":-5,"_42":43,"_41":181,"_142":60,"_39":294,"_13":64,"_34":183,"_36":-5,"_24":25,"_146":-5,"_212":295,"_27":296},{"_44":290,"_32":268,"_30":262,"_140":180,"_42":43,"_41":181,"_142":60,"_39":291,"_13":64,"_34":183,"_36":-5,"_24":25,"_146":-5,"_212":292,"_27":293},{"_44":282,"_32":283,"_30":284,"_140":262,"_42":43,"_41":285,"_142":25,"_39":286,"_13":64,"_34":35,"_36":287,"_24":25,"_146":-5,"_212":288,"_27":289},{"_44":278,"_32":33,"_30":31,"_140":262,"_42":43,"_41":14,"_142":25,"_39":279,"_13":274,"_34":35,"_36":38,"_24":25,"_146":-5,"_212":280,"_27":281},{"_44":269,"_32":270,"_30":271,"_140":262,"_42":43,"_41":272,"_142":25,"_39":273,"_13":274,"_34":35,"_36":275,"_24":25,"_146":-5,"_212":276,"_27":277},{"_44":259,"_32":260,"_30":261,"_140":262,"_42":43,"_41":263,"_142":60,"_39":264,"_13":144,"_34":35,"_36":265,"_24":25,"_146":-5,"_212":266,"_27":267},{"_44":251,"_32":252,"_30":253,"_140":180,"_42":43,"_41":254,"_142":25,"_39":255,"_13":159,"_34":35,"_36":256,"_24":25,"_146":-5,"_212":257,"_27":258},{"_44":243,"_32":244,"_30":245,"_140":180,"_42":43,"_41":246,"_142":60,"_39":247,"_13":168,"_34":35,"_36":248,"_24":25,"_146":-5,"_212":249,"_27":250},{"_44":235,"_32":236,"_30":237,"_140":180,"_42":43,"_41":238,"_142":60,"_39":239,"_13":64,"_34":20,"_36":240,"_24":25,"_146":-5,"_212":241,"_27":242},{"_44":227,"_32":228,"_30":229,"_140":180,"_42":43,"_41":230,"_142":25,"_39":231,"_13":168,"_34":35,"_36":232,"_24":25,"_146":-5,"_212":233,"_27":234},{"_44":171,"_32":172,"_30":173,"_140":-5,"_42":43,"_41":174,"_142":25,"_39":224,"_13":159,"_34":20,"_36":176,"_24":25,"_146":-5,"_212":225,"_27":226},{"_44":163,"_32":164,"_30":165,"_140":-5,"_42":43,"_41":166,"_142":25,"_39":221,"_13":168,"_34":35,"_36":169,"_24":25,"_146":-5,"_212":222,"_27":223},{"_44":155,"_32":156,"_30":58,"_140":-5,"_42":43,"_41":157,"_142":25,"_39":218,"_13":159,"_34":160,"_36":161,"_24":25,"_146":46,"_212":219,"_27":220},{"_44":148,"_32":149,"_30":150,"_140":-5,"_42":43,"_41":151,"_142":25,"_39":215,"_13":144,"_34":35,"_36":153,"_24":25,"_146":-5,"_212":216,"_27":217},{"_44":137,"_32":138,"_30":139,"_140":-5,"_42":43,"_41":141,"_142":60,"_39":211,"_13":144,"_34":35,"_36":145,"_24":25,"_146":-5,"_212":213,"_27":214},["D",1780069741640],"children",[],[138],["D",1780070195511],[],[149],["D",1780070120080],[],[156],["D",1780064880798],[],[164],["D",1780068731019],[],[172],"51f92912-5b6c-11f1-98df-ee650bb23af1","render.tsx","1881fa52-5b6b-11f1-a9ea-ee650bb23af1",20,["D",1780065621484],"/** @jsxImportSource https://esm.sh/react@18.2.0 */\n// Server-side render of the landing page. Per Val Town's React SSR quirk we\n// import react-dom/server from esm.sh with a pinned `?deps` to avoid the\n// \"ReactCurrentDispatcher\" mismatch that `npm:` imports trigger.\nimport { renderToString } from \"https://esm.sh/react-dom@18.2.0/server?deps=react@18.2.0\";\nimport { App, type PageData } from \"./App.tsx\";\n\nexport function renderPage(data: PageData): string {\n const body = renderToString();\n const desc = \"Send a fax from an AI agent. Pay per fax in USDC over x402 — no signup, no API key.\";\n return `\n\n \n \n \n agentfax — a fax API for AI agents\n \n \n \n \n \n \n \n

${body}

\n \n \n \n`;\n}\n",[],[179,228],"1d53ca9c-5b6b-11f1-849c-ee650bb23af1","favicon.svg","1d53cb5a-5b6b-11f1-849c-ee650bb23af1",15,["D",1780065103676],"\n",[],[179,236],"3309e8f4-5b74-11f1-a656-ee650bb23af1","demo.js","1bc83bae-5b6b-11f1-a9af-ee650bb23af1",38,["D",1780069005517],"// Minimal client JS: fire a real POST /v1/fax with no payment and show the\n// response (the 402 challenge in x402 mode, or a simulated fax in sandbox mode).\nconst btn = document.getElementById(\"try-btn\");\nconst out = document.getElementById(\"try-out\");\n\nbtn?.addEventListener(\"click\", async () => {\n const label = btn.textContent;\n btn.disabled = true;\n btn.textContent = \"Calling…\";\n out.className = \"text-neutral-200\";\n out.textContent = \"\";\n try {\n const res = await fetch(\"/v1/fax\", {\n method: \"POST\",\n headers: { \"content-type\": \"application/json\" },\n body: JSON.stringify({\n to: \"+14155550123\",\n file_url: \"https://example.com/invoice.pdf\",\n }),\n });\n const text = await res.text();\n let pretty = text;\n try {\n pretty = JSON.stringify(JSON.parse(text), null, 2);\n } catch (_) { /* leave as text */ }\n out.textContent = `HTTP ${res.status} ${res.statusText}\\n\\n${pretty}`;\n } catch (e) {\n out.textContent = \"Error: \" + (e && e.message ? e.message : String(e));\n } finally {\n btn.disabled = false;\n btn.textContent = label;\n }\n});\n\n// \"Copy prompt for your agent\" — copy the onboarding prompt to the clipboard.\nconst copyBtn = document.getElementById(\"copy-prompt\");\ncopyBtn?.addEventListener(\"click\", async () => {\n const text = copyBtn.dataset.prompt || \"\";\n const orig = copyBtn.textContent;\n try {\n await navigator.clipboard.writeText(text);\n } catch (_) {\n const ta = document.createElement(\"textarea\");\n ta.value = text;\n document.body.appendChild(ta);\n ta.select();\n try { document.execCommand(\"copy\"); } catch (e) { /* ignore */ }\n document.body.removeChild(ta);\n }\n copyBtn.textContent = \"Copied — paste it to your agent\";\n setTimeout(() => { copyBtn.textContent = orig; }, 2200);\n});\n",[],[179,244],"8e8d9ece-5b73-11f1-912b-ee650bb23af1","App.tsx","14a4fede-5b6b-11f1-9995-ee650bb23af1",33,["D",1780068729600],"/** @jsxImportSource https://esm.sh/react@18.2.0 */\nimport { type Cfg } from \"./components/ui.tsx\";\nimport { Hero } from \"./components/Hero.tsx\";\nimport { Api } from \"./components/Api.tsx\";\nimport { Footer, HowItWorks, Networks, Privacy, Shingle, TryIt } from \"./components/Sections.tsx\";\n\nexport interface PageData {\n baseUrl: string;\n payment: {\n network: string;\n price: string;\n payTo: string;\n facilitator: string;\n mode: \"x402\" | \"sandbox\";\n asset: { symbol: string; address: string | null; decimals: number };\n };\n provider: \"phaxio\" | \"sandbox\";\n price: string;\n}\n\nexport function App(data: PageData) {\n const cfg: Cfg = {\n baseUrl: data.baseUrl,\n network: data.payment.network,\n price: data.payment.price,\n assetSymbol: data.payment.asset.symbol,\n assetAddress: data.payment.asset.address,\n payTo: data.payment.payTo,\n facilitator: data.payment.facilitator,\n provider: data.provider,\n mode: data.payment.mode,\n };\n\n return (\n

\n \n \n \n \n \n \n \n

\n );\n}\n",[],[179,252],"653b27e6-5b6c-11f1-b3c6-ee650bb23af1","ui.tsx","d94cc79a-5b6a-11f1-8821-ee650bb23af1","2cfc3eb1-20cd-46f7-9c4d-6cd1b987b684",25,["D",1780065653799],"/** @jsxImportSource https://esm.sh/react@18.2.0 */\n// Shared presentational primitives. Server-rendered; no client JS.\n\nexport interface Cfg {\n baseUrl: string;\n network: string;\n price: string;\n assetSymbol: string;\n assetAddress: string | null;\n payTo: string;\n facilitator: string;\n provider: \"phaxio\" | \"sandbox\";\n mode: \"x402\" | \"sandbox\";\n}\n\nexport function Section(\n { id, className = \"\", children }: { id?: string; className?: string; children: any },\n) {\n return (\n

\n {children}\n

\n );\n}\n\nexport function Eyebrow({ children }: { children: any }) {\n return (\n

\n {children}\n

\n );\n}\n\nconst TONES: Record = {\n neutral: \"bg-neutral-800/80 text-neutral-300 border-neutral-700\",\n green: \"bg-emerald-500/10 text-emerald-300 border-emerald-500/30\",\n amber: \"bg-amber-500/10 text-amber-300 border-amber-500/30\",\n blue: \"bg-sky-500/10 text-sky-300 border-sky-500/30\",\n};\n\nexport function Pill({ tone = \"neutral\", children }: { tone?: string; children: any }) {\n return (\n \n {children}\n \n );\n}\n\nexport function Card({ className = \"\", children }: { className?: string; children: any }) {\n return (\n

\n {children}\n

\n );\n}\n\nexport function CodeBlock(\n { label, children }: { label?: string; children: any },\n) {\n return (\n

\n {label\n ? (\n

\n {label}\n

\n )\n : null}\n

\n        {children}\n

\n );\n}\n\nexport function Mono({ children }: { children: any }) {\n return {children};\n}\n",[],[179,268,260],"components","4a220e1e-5b73-11f1-ba6d-ee650bb23af1","Sections.tsx","fdf73a3a-5b6a-11f1-aa1f-ee650bb23af1",30,["D",1780068614820],3,"/** @jsxImportSource https://esm.sh/react@18.2.0 */\nimport { type Cfg, Card, CodeBlock, Eyebrow, Mono, Pill, Section } from \"./ui.tsx\";\n\nexport function HowItWorks() {\n const steps = [\n {\n n: \"01\",\n t: \"Ask\",\n d: \"Your agent POSTs a number + document to /v1/fax. With no payment attached, it gets HTTP 402 listing exactly what to pay and where.\",\n },\n {\n n: \"02\",\n t: \"Pay\",\n d: \"The agent's wallet signs a gasless USDC authorization (x402 `exact`, EIP-3009) and retries with an X-PAYMENT header. A facilitator verifies and settles on-chain — the agent pays no gas.\",\n },\n {\n n: \"03\",\n t: \"Fax\",\n d: \"We forward the document to the fax network, return a job id, and drop the payload. Poll /v1/fax/{id} for delivery status.\",\n },\n ];\n return (\n

\n How it works\n

Ask → pay → fax, in one request loop.

\n {steps.map((s) => (\n \n

{s.n}

{s.t}

{s.d}

\n \n ))}\n

\n );\n}\n\nexport function Networks() {\n const nets = [\n { name: \"Coinbase x402\", d: \"The native protocol. Settle through the CDP facilitator and you're auto-listed in the x402 Bazaar.\" },\n { name: \"Circle agent wallets\", d: \"Circle Nanopayments are built on standard x402 v2 (USDC). Circle agents pay a vanilla Base endpoint as-is.\" },\n { name: \"Tempo / MPP\", d: \"A separate L1 rail (Tempo chain, USDC.e). Tempo's client speaks MPP and expects a WWW-Authenticate header, so it can't pay a vanilla Base x402 endpoint without added MPP support. On the roadmap.\", soon: true },\n ];\n return (\n

\n Compatibility\n

One endpoint, many agent wallets.

\n x402 is the lingua franca of agentic payments. Accept USDC on Base once and Coinbase and Circle\n agents can pay you with zero per-network code.\n

\n {nets.map((n) => (\n \n

\n \n

{n.name}

\n {n.soon ? planned : live}\n

{n.d}

\n \n ))}\n

\n );\n}\n\nexport function Shingle() {\n return (\n

\n \n Want to hang a shingle?\n

\n The whole service is open source and runs on Val Town.\n

\n No marketplace to apply to, no approval, no servers to run — that's the x402 promise. Fork the\n val, point payTo at your wallet, and you're a paid API the moment you hit deploy.\n agentfax is 100% open source and hosted entirely on Val Town. Read every line.\n

\n \n Remix on Val Town\n \n \n Read the source\n \n

\n \n

\n );\n}\n\nexport function Privacy() {\n return (\n

\n \n Zero data retention\n

\n We keep nothing. Not the number, not the document.\n

\n agentfax is a stateless pass-through. Your document and destination are forwarded straight to the\n fax network and dropped — no database, no blob store, no logs of contents. The payment settles\n on-chain; the document lives only at the fax carrier, exactly as it must to be transmitted. The\n job id we hand back is a thin pointer to the carrier, holding no payload.\n

\n no DB\n no content logs\n on-chain settlement\n

\n \n

\n );\n}\n\nexport function TryIt({ cfg }: { cfg: Cfg }) {\n return (\n

\n Try it\n

See the 402 challenge live.

\n This fires a real POST /v1/fax with no payment attached.{\" \"}\n {cfg.mode === \"x402\"\n ? \"You'll get back the exact 402 an agent would receive, then pay.\"\n : \"Payments are in sandbox mode, so you'll see a simulated fax go through.\"}\n

\n \n Send a test request\n \n \n {`// press the button to call ${cfg.baseUrl}/v1/fax`}\n \n

\n );\n}\n\nexport function Footer({ cfg }: { cfg: Cfg }) {\n return (\n \n );\n}\n",[],[179,268,270],"29c1fe8c-5b77-11f1-bf2b-ee650bb23af1",["D",1780070278491],[],[179,268,33],"ed7aa0ca-5b6a-11f1-8984-ee650bb23af1","Api.tsx","ed7aa17e-5b6a-11f1-8984-ee650bb23af1",10,["D",1780065023400],"/** @jsxImportSource https://esm.sh/react@18.2.0 */\nimport { type Cfg, Card, CodeBlock, Eyebrow, Mono, Pill, Section } from \"./ui.tsx\";\n\nfunction Endpoint(\n { method, path, paid, children }: { method: string; path: string; paid?: boolean; children: any },\n) {\n const methodTone = method === \"GET\" ? \"blue\" : \"green\";\n return (\n \n

\n {method}\n {path}\n {paid ? 402 · paid : free}\n

\n {children}\n \n );\n}\n\nexport function Api({ cfg }: { cfg: Cfg }) {\n return (\n

\n API\n

Three endpoints. That's the whole thing.

\n Discover the service at GET /v1/info. Everything an agent needs — price, network,\n receiving address, and the request schema — is machine-readable.\n

\n\n

\n \n

\n Send a fax. Returns 402 with payment terms until paid; on success returns a job id.\n

\n \n {`{\n \"to\": \"+14155550123\", // E.164, required\n \"file_url\": \"https://…/doc.pdf\", // a public PDF URL …\n \"content_base64\": \"JVBERi0…\", // … or raw base64 bytes\n \"file_name\": \"doc.pdf\", // optional\n \"metadata\": { \"ref\": \"inv-42\" } // optional, echoed back, not stored\n}`}\n \n \n {`{\n \"id\": \"pxo_8675309\",\n \"status\": \"sending\",\n \"to\": \"+14155550123\",\n \"pages\": 2,\n \"price_usd\": \"${cfg.price}\",\n \"payer\": \"0xAgentWallet…\",\n \"_links\": { \"self\": \"${cfg.baseUrl}/v1/fax/pxo_8675309\" }\n}`}\n \n \n\n \n

\n Poll delivery status — proxied live from the fax network. Status is one of{\" \"}\n queued, sending, delivered, failed. We hold\n no record of the destination or document.\n

\n \n\n \n

\n The machine-readable manifest: payment terms, the request schema, and a ready-to-run example.\n Also at /.well-known/x402.\n

\n \n

\n );\n}\n",[],[179,268,283],"d94cfc1a-5b6a-11f1-8821-ee650bb23af1",["D",1780064989545],[198,199,200,201],[179,268],["D",1780064989545],[197,202,203,204,205],[179],["D",1780064564355],["D",1789500689328],{"_101":100,"_108":104},{"_101":100,"_102":-5,"_103":104,"_18":56,"_105":106,"_107":25},{"_13":90,"_32":91,"_44":43,"_92":45,"_93":-5,"_94":-5,"_95":-5,"_96":-5,"_97":-5,"_98":46,"_99":100},"ctx",{"_83":-5,"_128":335,"_336":337,"_338":339,"_340":25,"_341":25,"_342":25,"_343":60,"_344":-5,"_345":-7,"_346":-7,"_347":64,"_348":25,"_349":25,"_350":-5,"_351":25,"_352":25,"_353":25,"_354":-5},"ENV",{"_306":307,"_308":309,"_310":91,"_311":312,"_313":314,"_315":316,"_317":318,"_319":320,"_321":322,"_323":324,"_325":326,"_327":328,"_329":330,"_331":332,"_333":334},"REACT_APP_SENTRY_DSN","https://586020d86f05489db63a554690acf1e9@o1398359.ingest.sentry.io/6724499","RENDER_GIT_COMMIT","5015b8df46402d8bba4f485ecc37aec202b0e06b","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"]

Diff · v51