[{"_1":2,"_3":-5,"_4":-5},"loaderData",{"_5":6,"_7":8,"_9":10},"actionData","errors","root",{"_495":496,"_497":498},"routes/_app.x.$handle.$name",{"_98":97,"_32":46,"_107":88,"_27":108,"_13":14,"_109":-5,"_11":110,"_111":112,"_113":114,"_115":116,"_117":118,"_20":-5,"_119":-5,"_120":-5,"_121":25,"_122":123,"_124":60,"_125":-5,"_126":-5,"_127":128},"routes/_app.x.$handle.$name.branch.$branch.version.$version.diff",{"_11":12,"_13":14,"_15":16,"_17":-5,"_18":-5},"project",{"_44":45,"_32":46,"_39":47,"_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":-5,"_68":-5,"_69":-5,"_70":-5,"_71":72,"_73":72,"_74":75,"_76":75,"_77":75,"_78":72,"_79":72,"_80":81,"_82":83,"_84":85,"_86":25},"version",80,"changes",[19],"aiChatInfo","userId",{"_20":21,"_22":23,"_24":25,"_26":25,"_27":28,"_29":28},"file",{"_30":31,"_32":33,"_34":35,"_36":38,"_39":40,"_41":14,"_42":43,"_24":25},"previous",{"_30":31,"_32":33,"_34":35,"_36":37},"deleted",false,"deletedHere","path","librarian/events.ts","latestPath","fileId","772d3622-6451-11f1-8681-1607ee4eb77e","name","events.ts","fileType","http","content","// Skills Librarian — Slack bot entrypoint. Built on the Val Town ai-slackbot\n// template: GET / is a one-click Slack-app setup page; Slack posts events to\n// /events, which verifies + early-returns by dispatching the heavy work to\n// /process (its own execution lifecycle). The bot's tools live in\n// skill-tools.ts; it reads/writes the skills/ folder of THIS val.\nimport { Hono } from \"npm:hono@4.12.0\";\nimport type {\n GenericMessageEvent,\n SlackEvent,\n} from \"npm:@slack/web-api@7.14.1\";\nimport { getBotId, verifyRequest } from \"./slack-utils.ts\";\nimport { handleAppMention } from \"./handle-app-mention.ts\";\nimport { handleThreadStarted } from \"./handle-thread-started.ts\";\nimport { handleMessage } from \"./handle-message.ts\";\n\nconst app = new Hono();\n\n// One-click setup: a Slack app manifest with this bot's /events URL baked in.\napp.get(\"/\", (c) => {\n const eventsUrl = `${new URL(c.req.url).origin}/events`;\n const manifest = {\n display_information: {\n name: \"Skills Librarian\",\n description: \"Manages your Val Town agent-skill library from Slack.\",\n },\n features: {\n app_home: { messages_tab_enabled: true, messages_tab_read_only_enabled: false },\n assistant_view: {\n assistant_description: \"Browse, explain, and CRUD your agent skills.\",\n suggested_prompts: [\n { title: \"List the skills\", message: \"What skills are in the library right now?\" },\n { title: \"Explain a skill\", message: \"How does the code-reviewer skill work?\" },\n {\n title: \"Create a skill\",\n message:\n \"Create a skill called pr-summarizer that reads a GitHub PR diff and writes a release note.\",\n },\n ],\n },\n bot_user: { display_name: \"Skills Librarian\", always_online: true },\n },\n oauth_config: {\n scopes: {\n bot: [\n \"app_mentions:read\",\n \"assistant:write\",\n \"channels:history\",\n \"chat:write\",\n \"im:history\",\n \"im:write\",\n ],\n },\n },\n settings: {\n event_subscriptions: {\n request_url: eventsUrl,\n bot_events: [\"app_mention\", \"assistant_thread_started\", \"message.im\"],\n },\n },\n };\n const manifestUrl =\n `https://api.slack.com/apps?new_app=1&manifest_json=${encodeURIComponent(JSON.stringify(manifest))}`;\n return c.html(/* html */ `\nSkills Librarian\n\n

📚 Skills Librarian

A Slack bot that manages your Val Town agent-skill library — list, explain, create, update, and delete skills by chatting. Click below to create the Slack app (scopes, events, and webhook URL are pre-filled from a manifest).

Create Slack App →

Then add these to this val's environment variables:

SLACK_BOT_TOKEN & SLACK_SIGNING_SECRET — from the Slack app you just created
ANTHROPIC_API_KEY — for the model
VALTOWN_TOKEN — a Val Town API token with val write access, so the librarian can edit skills

📚 Skills Librarian

Create Slack App →

Then add these to this val's environment variables:

SLACK_BOT_TOKEN & SLACK_SIGNING_SECRET — from the Slack app you just created
ANTHROPIC_API_KEY — for the model
Then authorize Val Town with one click on the /connect page (or the catalog's bottom bar) — no token to create or paste. Prefer a token? Set VALTOWN_TOKEN instead.

\n`);\n});\n\n// ─── Slack event intake: verify, then early-return to /process ──────────────\napp.post(\"/events\", async (c) => {\n const rawBody = await c.req.text();\n const payload = JSON.parse(rawBody);\n const requestType = payload.type as \"url_verification\" | \"event_callback\";\n\n if (requestType === \"url_verification\") {\n return new Response(payload.challenge, { status: 200 });\n }\n\n try {\n await verifyRequest({ requestType, request: c.req.raw, rawBody });\n const botUserId = await getBotId();\n const event = payload.event as SlackEvent;\n console.log(`[Events] Received ${event.type}, dispatching to /process`);\n\n const processUrl = new URL(\"/process\", c.req.url).toString();\n const internalSecret = Deno.env.get(\"SLACK_SIGNING_SECRET\")!;\n fetch(processUrl, {\n method: \"POST\",\n headers: {\n \"Content-Type\": \"application/json\",\n \"X-Internal-Secret\": internalSecret,\n },\n body: JSON.stringify({ event, botUserId }),\n }); // intentionally NOT awaited (early-return pattern)\n\n return new Response(\"OK\", { status: 200 });\n } catch (error) {\n console.error(\"[Events] Error:\", error);\n return new Response(\"Error\", { status: 500 });\n }\n});\n\n// ─── Process route: the actual heavy lifting, with its own timeout window ────\napp.post(\"/process\", async (c) => {\n const internalSecret = Deno.env.get(\"SLACK_SIGNING_SECRET\")!;\n if (c.req.header(\"X-Internal-Secret\") !== internalSecret) {\n console.warn(\"[Process] Rejected unauthorized request\");\n return new Response(\"Unauthorized\", { status: 401 });\n }\n\n const { event, botUserId } = await c.req.json();\n console.log(`[Process] Handling ${event.type}`);\n\n try {\n switch (event.type) {\n case \"app_mention\":\n await handleAppMention(event, botUserId);\n break;\n case \"assistant_thread_started\":\n await handleThreadStarted(event);\n break;\n case \"message\":\n await handleMessage(event as GenericMessageEvent, botUserId);\n break;\n default:\n console.log(`[Process] Unknown event type: ${event.type}`);\n }\n return new Response(\"Done\", { status: 200 });\n } catch (error) {\n console.error(`[Process] FAILED for ${event.type}:`, error);\n return new Response(\"Error\", { status: 500 });\n }\n});\n\nexport default app.fetch;\n","createdAt",["D",1781044513434],"branchVersion","branchId","7c862450-0674-426e-9c69-ceda93eca788","id","6852d2a6-72e8-40e3-b5f0-53b7f8f82e7f","skills",["D",1780679910046],"deletedAt","legacyEnvVars","privacy","public","httpPrivacy","description","Shareable agent skill library","imageUrl","9319c175-2593-4f88-ba21-04f2ef7b1c28","pinnedFileId","92861134-6102-11f1-a0c5-1607ee4eb77e","pinPreview",true,"pinMigrated","screenshotVersion","likeCount",1,"orgId","d663a026-6449-42f6-9156-1d4a2d64d38c","tursoName","tursoHostname","tursoMeasuredAt","pinned","userPerm","r","valPerm","blobPerm","rw","emailPerm","sqlitePerm","projectPerm","telemetryPerm","user",{"_98":97,"_106":102},"org",{"_98":97,"_99":100,"_101":102,"_18":56,"_103":104,"_105":25},"branch",{"_13":87,"_32":88,"_44":43,"_89":45,"_90":-5,"_91":-5,"_92":-5,"_93":-5,"_94":-5,"_95":46,"_96":97},"isOwned",96,"main","projectId","forkedBranchId","forkedBranchVersion","forkedProjectPrivacy","forkedProjectId","forkedProjectOrgId","projectName","userHandle","dcm31","handle","displayName","Charlie","avatar","https://imagedelivery.net/iHX6Ovru0O7AjmyT5yZRoA/3e904faa-3764-4629-c475-f561a49b0000/square512?exp=1789574399&sig=a925208509ae04f12f2c0946312b0486500a05bf884a2b0f9b9455e5f9f79132","tier","pro","canRestrictVals","profileImageUrl","branchName","","adoptOrgId",{"_44":45,"_32":46,"_39":491,"_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":-5,"_68":-5,"_69":-5,"_70":-5,"_71":72,"_73":72,"_74":75,"_76":75,"_77":75,"_78":72,"_79":72,"_80":492,"_82":493,"_84":494,"_86":25},"tree",[204,211,213,216,226,241,242,243],"files",[204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243],"counts",{"_192":172,"_193":194,"_195":194,"_196":197,"_198":199},"contents",[129,130,131,132,133,134,135,136],"upstreamProject","upstreamBranch","emptyEnvVars","flags",[],"hasHttpFiles","grants","orgs","customDomains",{},{"_44":186,"_32":187,"_30":188,"_140":-5,"_42":43,"_41":189,"_142":60,"_39":190,"_13":172,"_34":166,"_36":-5,"_24":25,"_146":-5,"_27":191},{"_44":180,"_32":181,"_30":182,"_140":-5,"_42":43,"_41":183,"_142":60,"_39":184,"_13":172,"_34":166,"_36":-5,"_24":25,"_146":-5,"_27":185},{"_44":174,"_32":175,"_30":176,"_140":-5,"_42":43,"_41":177,"_142":60,"_39":178,"_13":172,"_34":166,"_36":-5,"_24":25,"_146":-5,"_27":179},{"_44":168,"_32":169,"_30":170,"_140":-5,"_42":43,"_41":141,"_142":60,"_39":171,"_13":172,"_34":166,"_36":-5,"_24":25,"_146":-5,"_27":173},{"_44":162,"_32":46,"_30":163,"_140":-5,"_42":43,"_41":164,"_142":60,"_39":165,"_13":64,"_34":166,"_36":-5,"_24":25,"_146":-5,"_27":167},{"_44":155,"_32":156,"_30":157,"_140":-5,"_42":43,"_41":141,"_142":25,"_39":158,"_13":159,"_34":20,"_36":160,"_24":25,"_146":-5,"_27":161},{"_44":148,"_32":149,"_30":58,"_140":-5,"_42":43,"_41":150,"_142":25,"_39":151,"_13":152,"_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":64,"_34":144,"_36":145,"_24":25,"_146":-5,"_27":147},"64cd3c2b-9f72-4ee3-9ed8-00e2a37484eb","og.ts","8a603662-6128-11f1-abe9-1607ee4eb77e","parentId",74,"latest",["D",1781043647946],"script","// Open Graph / Twitter card image (1200×630), generated with satori (JSX→SVG)\n// + resvg-wasm (SVG→PNG). Served at GET /og.png. Light/blue theme to match the\n// Skill Library UI. Modeled on stevekrouse/agentfax's og.ts.\nimport satori from \"npm:satori@0.10.13\";\nimport { initWasm, Resvg } from \"npm:@resvg/resvg-wasm@2.6.2\";\n\n// Static-weight TTFs (variable fonts crash satori's opentype.js).\nconst SANS_BOLD_TTF =\n \"https://raw.githubusercontent.com/google/fonts/main/ofl/ptsans/PT_Sans-Web-Bold.ttf\";\nconst SANS_REGULAR_TTF =\n \"https://raw.githubusercontent.com/google/fonts/main/ofl/ptsans/PT_Sans-Web-Regular.ttf\";\nconst RESVG_WASM_URL = \"https://unpkg.com/@resvg/resvg-wasm@2.6.2/index_bg.wasm\";\n\nlet fontsPromise: Promise<{ bold: ArrayBuffer; regular: ArrayBuffer }> | null = null;\nfunction loadFonts() {\n if (!fontsPromise) {\n const get = (url: string, label: string) =>\n fetch(url).then((r) => {\n if (!r.ok) throw new Error(`${label} font fetch failed: ${r.status}`);\n return r.arrayBuffer();\n });\n fontsPromise = Promise.all([\n get(SANS_BOLD_TTF, \"Bold\"),\n get(SANS_REGULAR_TTF, \"Regular\"),\n ]).then(([bold, regular]) => ({ bold, regular }));\n }\n return fontsPromise;\n}\n\nlet wasmPromise: Promise | null = null;\nfunction ensureResvg(): Promise {\n if (!wasmPromise) {\n wasmPromise = fetch(RESVG_WASM_URL)\n .then((r) => {\n if (!r.ok) throw new Error(`resvg wasm fetch failed: ${r.status}`);\n return r.arrayBuffer();\n })\n .then((bytes) => initWasm(bytes));\n }\n return wasmPromise;\n}\n\nfunction pill(text: string) {\n return {\n type: \"div\",\n props: {\n style: {\n display: \"flex\",\n fontSize: 26,\n color: \"#404040\",\n background: \"#f5f5f5\",\n border: \"1px solid #e5e5e5\",\n borderRadius: \"999px\",\n padding: \"12px 28px\",\n },\n children: text,\n },\n };\n}\n\n// A stacked-cards \"library\" glyph as a satori SVG node (0–32 grid), scaled to `size`.\nfunction stackIcon(size: number) {\n return {\n type: \"svg\",\n props: {\n width: size,\n height: size,\n viewBox: \"0 0 32 32\",\n children: [\n { type: \"rect\", props: { x: 9, y: 3, width: 18, height: 22, rx: 3, fill: \"#bfdbfe\" } },\n { type: \"rect\", props: { x: 6, y: 6, width: 18, height: 22, rx: 3, fill: \"#60a5fa\" } },\n { type: \"rect\", props: { x: 3, y: 9, width: 18, height: 22, rx: 3, fill: \"#2563eb\" } },\n { type: \"rect\", props: { x: 6, y: 14, width: 12, height: 1.6, rx: 0.8, fill: \"#ffffff\" } },\n { type: \"rect\", props: { x: 6, y: 18, width: 9, height: 1.6, rx: 0.8, fill: \"#ffffff\" } },\n { type: \"rect\", props: { x: 6, y: 22, width: 11, height: 1.6, rx: 0.8, fill: \"#dbeafe\" } },\n ],\n },\n };\n}\n\nasync function renderSvg(count: number): Promise {\n const { bold, regular } = await loadFonts();\n const tree = {\n type: \"div\",\n props: {\n style: {\n width: \"1200px\",\n height: \"630px\",\n display: \"flex\",\n background: \"#fafafa\",\n padding: \"56px\",\n fontFamily: \"Sans\",\n },\n children: [\n {\n type: \"div\",\n props: {\n style: {\n flex: 1,\n display: \"flex\",\n flexDirection: \"row\",\n alignItems: \"center\",\n justifyContent: \"space-between\",\n padding: \"0 72px\",\n border: \"1px solid #e5e5e5\",\n borderRadius: \"28px\",\n background: \"#ffffff\",\n },\n children: [\n {\n type: \"div\",\n props: {\n style: { display: \"flex\", flexDirection: \"column\", maxWidth: \"640px\" },\n children: [\n {\n type: \"div\",\n props: {\n style: { display: \"flex\", fontSize: 28, fontWeight: 700, color: \"#2563eb\", letterSpacing: \"6px\" },\n children: \"SKILL LIBRARY\",\n },\n },\n {\n type: \"div\",\n props: {\n style: { display: \"flex\", fontSize: 104, fontWeight: 700, color: \"#171717\", letterSpacing: \"-3px\", marginTop: \"18px\" },\n children: \"Skill Library\",\n },\n },\n {\n type: \"div\",\n props: {\n style: { display: \"flex\", fontSize: 36, color: \"#525252\", lineHeight: 1.35, marginTop: \"20px\" },\n children: \"A shared library of reusable agent skills. Fork it and drop in your own.\",\n },\n },\n {\n type: \"div\",\n props: {\n style: { display: \"flex\", flexDirection: \"row\", gap: \"14px\", marginTop: \"34px\" },\n children: [pill(`${count} skill${count === 1 ? \"\" : \"s\"}`), pill(\"Built on Val Town\")],\n },\n },\n ],\n },\n },\n stackIcon(300),\n ],\n },\n },\n ],\n },\n };\n return await satori(tree as any, {\n width: 1200,\n height: 630,\n fonts: [\n { name: \"Sans\", data: bold, weight: 700, style: \"normal\" },\n { name: \"Sans\", data: regular, weight: 400, style: \"normal\" },\n ],\n });\n}\n\nexport async function renderOg(count: number): Promise {\n try {\n const svg = await renderSvg(count);\n await ensureResvg();\n const png = new Resvg(svg).render().asPng();\n return new Response(png, {\n headers: { \"content-type\": \"image/png\", \"cache-control\": \"public, max-age=3600\" },\n });\n } catch (err) {\n const msg = err instanceof Error ? err.stack || err.message : String(err);\n return new Response(`OG render failed:\\n${msg}`, {\n status: 500,\n headers: { \"content-type\": \"text/plain\" },\n });\n }\n}\n","label",[138],"023ac6f1-cdb4-42f0-9c7e-acb37cd728fe","http.tsx",79,["D",1781044220181],15,"/** @jsxImportSource npm:hono@4/jsx */\n// Skill Library — thin HTTP orchestrator for the public catalog. Routes only;\n// markup lives in components/, data + helpers in lib/skills.ts, client JS in\n// frontend/client.js. A skill is just a folder under skills/ — the catalog is\n// derived at runtime from each SKILL.md's frontmatter (no manifest). See\n// README.md. (The Slack \"skills librarian\" bot lives in librarian/.)\n\nimport { Hono } from \"npm:hono@4\";\nimport { marked } from \"npm:marked@15\";\nimport { readFile } from \"https://esm.town/v/std/utils/index.ts\";\nimport { parseVal } from \"https://esm.town/v/std/utils/index.ts\";\n\nimport {\n buildCopyPayload,\n esc,\n exampleAsset,\n getSkill,\n getSkills,\n parseFrontmatter,\n readSkillFile,\n} from \"./lib/skills.ts\";\nimport { librarianBar } from \"./lib/vt.ts\";\nimport { renderOg } from \"./og.ts\";\nimport { Layout } from \"./components/Layout.tsx\";\nimport { Home } from \"./components/Home.tsx\";\nimport { SkillDetail } from \"./components/SkillDetail.tsx\";\nimport { FileView } from \"./components/FileView.tsx\";\n\nconst app = new Hono();\napp.onError((err) => Promise.reject(err)); // full stack traces in logs\n\nconst origin = (c: { req: { url: string } }) => new URL(c.req.url).origin;\n\n// ── Public assets ────────────────────────────────────────────────────────────\n\napp.get(\"/client.js\", async () => {\n const js = await readFile(\"/frontend/client.js\", import.meta.url);\n return new Response(js, {\n headers: { \"content-type\": \"text/javascript; charset=utf-8\" },\n });\n});\n\napp.get(\"/source\", (c) => c.redirect(parseVal().links.self.val));\n\n// Social card image (Open Graph / Twitter)\napp.get(\"/og.png\", async () => renderOg((await getSkills()).length));\n\n// ── Pages ────────────────────────────────────────────────────────────────────\n\napp.get(\"/\", async (c) => {\n const librarian = await librarianBar();\n if (c.req.query(\"nudge\") === \"1\") librarian.connected = false; // ?nudge=1 previews the not-connected nudge\n return c.html(\n \n \n ,\n );\n});\n\napp.get(\"/skills/:slug\", async (c) => {\n const skill = await getSkill(c.req.param(\"slug\"));\n if (!skill) return c.notFound();\n const rawMd = await readSkillFile(skill.slug, \"SKILL.md\");\n if (!rawMd) return c.notFound();\n const { body } = parseFrontmatter(rawMd);\n const html = await marked.parse(body);\n const payload = buildCopyPayload(skill, rawMd); // payload keeps frontmatter — that IS the skill format\n // Live preview = the skill's first assets/*.html (see lib/skills.ts).\n const examplePath = exampleAsset(skill);\n const exampleHtml = examplePath\n ? (await readSkillFile(skill.slug, examplePath)) ?? undefined\n : undefined;\n return c.html(\n \n \n ,\n );\n});\n\n// Standalone, embeddable render of a skill's live example asset. Same design\n// system, no surrounding app chrome.\napp.get(\"/skills/:slug/example\", async (c) => {\n const skill = await getSkill(c.req.param(\"slug\"));\n const examplePath = skill && exampleAsset(skill);\n if (!skill || !examplePath) return c.notFound();\n const html = await readSkillFile(skill.slug, examplePath);\n if (html == null) return c.notFound();\n return c.html(\n \n \n ← {skill.name}\n \n

\n {skill.name} — examples\n

\n ,\n );\n});\n\napp.get(\"/skills/:slug/files/*\", async (c) => {\n const skill = await getSkill(c.req.param(\"slug\"));\n if (!skill) return c.notFound();\n const path = c.req.path.replace(`/skills/${skill.slug}/files/`, \"\");\n if (!skill.files.includes(path)) return c.notFound();\n const content = await readSkillFile(skill.slug, path);\n if (content === null) return c.notFound();\n const isMarkdown = path.endsWith(\".md\");\n const rendered = isMarkdown\n ? await marked.parse(parseFrontmatter(content).body)\n : `

${esc(content)}

`;\n return c.html(\n \n \n ,\n );\n});\n\nexport default app.fetch;\n",[149],"64a5042f-93c4-4d6a-ad02-1abe28da36fe","README.md","6f71b83e-611a-11f1-b6b7-1607ee4eb77e",["D",1781043647946],14,"# Skill Library\n\nA directory of reusable **agent skills**. Each skill is a folder of Markdown and\ncode; the app renders every skill's `SKILL.md` and gives you a one-click **Copy\nskill** button that puts a ready-to-run payload on your clipboard.\n\nA skill is **just a folder** — drop `skills//SKILL.md` in and it shows up.\nThere's no manifest to keep in sync. There's also a **Slack \"Skills Librarian\"**\nbot (in `librarian/`) that can list, explain, and CRUD skills by chat.\n\n🔗 **Catalog:** https://dcm31--92861134610211f1a0c51607ee4eb77e.web.val.run\n\n## How a skill is structured\n\nA skill is a folder under `skills//` following the standard Agent-Skills\nlayout, so it stays valid and discoverable by agents reading it outside this app:\n\n```\nskills//\n SKILL.md # entry point — what the skill does and the flow to follow\n scripts/ # runnable code the agent writes locally\n knowledge/ # reference docs the agent reads for context\n assets/ # optional HTML fragment, shown as a live example\n```\n\nOnly `SKILL.md` is required. Its YAML frontmatter is the skill's metadata —\n**this is the single source of truth; there is no separate manifest:**\n\n```markdown\n---\nname: PR Summarizer\ndescription: Reads a GitHub PR diff and writes a release note. Use when…\ncategory: Engineering\n---\n\n# PR Summarizer\n…the instructions an agent follows…\n```\n\nThe catalog is derived at request time: the app lists `skills/*`, reads each\n`SKILL.md`'s frontmatter for `name` / `description` / `category`, and collects\nthe folder's files. Add a folder → it appears. Edit frontmatter → the card\nupdates. (`name` falls back to a title-cased slug, `category` to\n\"Uncategorized\", if you omit them.)\n\n## Managing skills\n\nThree ways, in increasing convenience:\n\n1. **The Slack Skills Librarian** (see below) — \"list the skills\", \"how does X\n work\", \"create a skill that…\", \"change the UI skill to…\".\n2. **A coding agent** via the Val Town plugin (Claude Code / Codex / Cursor):\n `npx plugins add val-town/plugins`, then ask it to add or edit a skill.\n3. **By hand** in the Val Town editor — a skill's body is plain Markdown, so a\n typo fix is a two-second edit that deploys on save.\n\n## The Slack Skills Librarian (`librarian/`)\n\nA Slack agent (Claude + the Vercel AI SDK, built on the `templates/ai-slackbot`\nquickstart) that manages this library through a small set of structured tools.\nThe design split: **reads are broad, writes are deliberate.**\n\n| Tool | What it does |\n| --- | --- |\n| `list_skills` | Lightweight catalog (name / category / description) |\n| `read_skill` / `read_skill_file` | Read a skill's SKILL.md or a supporting file |\n| `create_skill` | New skill — writes the folder + SKILL.md with correct frontmatter |\n| `update_skill` | Change metadata, body, or one file of an existing skill |\n| `delete_skill` | Remove a skill (guarded by an explicit `confirm`) |\n\n`create_skill` / `update_skill` own the folder-and-frontmatter shape, so the bot\ncan't produce a malformed skill, and every write is scoped to this val's\n`skills/` folder. Reads use `std/utils` (token-free); writes use the Val Town\nREST API with a token (`VALTOWN_TOKEN`) and target the **current branch**, so on\nthe `librarian` branch new skills land on the branch until you merge to `main`.\n\n### Setup\n\n1. Open the bot's HTTP endpoint (the `librarian/events.ts` file's URL) and click\n **Create Slack App →** — scopes, events, and the webhook URL are pre-filled\n from a manifest.\n2. Install the app to your workspace, then set four environment variables on\n this val:\n - `SLACK_BOT_TOKEN`, `SLACK_SIGNING_SECRET` — from the Slack app\n - `ANTHROPIC_API_KEY` — for the model\n - `VALTOWN_TOKEN` — a Val Town API token with val write access (this is what\n lets the librarian edit skills; only the skill-CRUD tools use it)\n3. Message the bot in its Assistant tab or `@mention` it in a channel.\n\n> **Note:** the bot authenticates to Val Town with a single service token\n> (`VALTOWN_TOKEN`) for now. Swapping this for one-click Val Town OAuth (so you\n> authorize the bot instead of pasting a token) is a planned follow-up — the\n> token is read in one place (`lib/vt.ts`) so OAuth drops in there.\n\n---\n\n## Live examples\n\nA skill can ship a live preview — a working UI rendered right on its page. Drop\nan HTML fragment in the skill's `assets/` folder (e.g. `assets/showcase.html`)\nand reference it from `SKILL.md` with a Markdown link. The app renders the first\n`assets/*.html` it finds as an **Examples** panel, and serves it standalone\n(iframe-embeddable) at `/skills//example`. The **ui-example** skill ships\none and walks through the feature.\n\n## Technical details\n\n### Files\n\n```\nhttp.tsx # public catalog routes\nlib/skills.ts # skill discovery (folder → catalog), file + copy-payload helpers, frontmatter parse\nlib/vt.ts # Val Town REST client: skill writes + a catalog read-list fallback\nog.ts # social card image\ncomponents/ # Layout, Home, SkillDetail, FileView, FileTree\nfrontend/client.js # clipboard wiring for [data-copy] buttons\nskills// # the skills themselves (source of truth)\nlibrarian/ # the Slack Skills Librarian bot\n events.ts # HTTP entry: setup page + Slack /events + /process\n generate-response.ts # the agent loop (Claude + tools)\n skill-tools.ts # list / read / create / update / delete tools\n slack-utils.ts # Slack client, verification, thread reconstruction\n handle-*.ts # app_mention / message / thread_started handlers\n prompt.md # librarian system prompt\n```\n\n### Catalog routes\n\n| Route | Purpose |\n| --- | --- |\n| `/` | Home — grid of skill cards |\n| `/skills/:slug` | Skill detail — rendered `SKILL.md`, Copy button, file tree |\n| `/skills/:slug/example` | Standalone live example (when a skill ships an `assets/*.html`) |\n| `/skills/:slug/files/*` | Raw file viewer |\n| `/client.js`, `/source`, `/og.png` | Clipboard JS, source redirect, social card |\n\n### Gating it to your team\n\nBy default the catalog is public. To restrict it to a Val Town org, sign requests\nthrough `std/oauth` and check the signed-in user against your org's members (wrap\nthe `http.tsx` `fetch` export with the OAuth middleware). Requires a 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UI Example\ndescription: Shows off the live-example feature — a skill that ships an HTML fragment, rendered inline on its page and standalone. Read it to learn how examples work.\ncategory: Reference\n---\n\n# UI Example\n\n> This skill exists to demonstrate the library's **live-example feature** — and to double as a quick reference for the design system every page here inherits. Scroll up: the **Examples** panel above this text is rendered live from the HTML fragment this skill ships.\n\n## What you're looking at\n\nA skill can ship a single HTML fragment under its `assets/` directory. When it does, two things happen automatically:\n\n1. It renders as an **Examples** panel at the top of the skill page (the box above).\n2. It's served on its own, full-bleed, at `/skills//example` — open it with the **\"Open standalone ↗\"** link. That URL is embeddable (drop it in an `

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