\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","skill-library-example",[195],"5d121397-ccd8-400b-a3bf-385c821df739","README.md","019eb210-d0df-724e-8ef0-153f974d6fbb",["D",1781103906945],"# 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 these 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 - `SLACK_APP_ID` *(optional)* — powers the catalog toolbar's \"DM the librarian\" link\n3. **Authorize Val Town writes** with one click on the `/connect` page (the\n `librarian/connect.ts` endpoint — also surfaced from the catalog's bottom\n bar). That stores a self-refreshing OAuth token so the librarian can create &\n edit skills. No API token to create or paste.\n4. Message the bot in its Assistant tab or `@mention` it in a channel.\n\n> Prefer a token over OAuth (or running headless)? Set `VALTOWN_TOKEN` to a Val\n> Town API token with val write access and the librarian uses that instead — it\n> takes priority. Either way, only the skill-CRUD tools touch it.\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 Teams\naccount.\n",[203],"3d37c7eb-e23c-4c61-ac2a-32db85bc7e93","019eb210-d0df-724e-8ef0-12a009395958",["D",1781103906945],[172],"8d48fe9b-81ba-424e-8510-14e50be10406","librarian","019eb210-d0df-724e-8eef-d61502f023fa",["D",1781103906945],[213],"490ea20d-0700-465e-a51e-5973a58cf309","lib","019eb210-d0df-724e-8eef-aed75fe9248d",["D",1781103906945],[218],"9e310058-7ef2-46b4-9cc4-f9a337443b0e","frontend","019eb210-d0df-724e-8eef-a0d067f439ac",["D",1781103906945],[223],"94ef85bd-59a7-4244-9aa3-fe2507888462","components","019eb210-d0df-724e-8eef-98bf7ecc2a38",["D",1781103906945],[228],"pulls","branches","forks","envVars",{"_239":74,"_241":74},"connections",{"_239":26,"_240":26},"count","unfilledCount","emptyCount",{"_35":227,"_13":228,"_64":229,"_45":-5,"_37":38,"_185":186,"_187":24,"_39":517,"_41":26,"_67":88,"_190":-5,"_68":30,"_192":-5,"_283":518,"_17":519},{"_35":510,"_13":511,"_64":512,"_45":229,"_37":38,"_185":186,"_187":24,"_39":513,"_41":26,"_67":189,"_190":514,"_68":30,"_192":-5,"_283":515,"_17":516},{"_35":503,"_13":504,"_64":505,"_45":229,"_37":38,"_185":186,"_187":24,"_39":506,"_41":26,"_67":189,"_190":507,"_68":30,"_192":-5,"_283":508,"_17":509},{"_35":496,"_13":497,"_64":498,"_45":229,"_37":38,"_185":186,"_187":24,"_39":499,"_41":26,"_67":189,"_190":500,"_68":30,"_192":-5,"_283":501,"_17":502},{"_35":489,"_13":490,"_64":491,"_45":229,"_37":38,"_185":186,"_187":24,"_39":492,"_41":26,"_67":189,"_190":493,"_68":30,"_192":-5,"_283":494,"_17":495},{"_35":482,"_13":483,"_64":484,"_45":229,"_37":38,"_185":186,"_187":24,"_39":485,"_41":26,"_67":189,"_190":486,"_68":30,"_192":-5,"_283":487,"_17":488},{"_35":475,"_13":476,"_64":477,"_45":229,"_37":38,"_185":186,"_187":24,"_39":478,"_41":26,"_67":189,"_190":479,"_68":30,"_192":-5,"_283":480,"_17":481},{"_35":222,"_13":223,"_64":224,"_45":-5,"_37":38,"_185":186,"_187":24,"_39":472,"_41":26,"_67":88,"_190":-5,"_68":30,"_192":-5,"_283":473,"_17":474},{"_35":465,"_13":466,"_64":467,"_45":224,"_37":38,"_185":186,"_187":24,"_39":468,"_41":26,"_67":189,"_190":469,"_68":30,"_192":-5,"_283":470,"_17":471},{"_35":217,"_13":218,"_64":219,"_45":-5,"_37":38,"_185":186,"_187":24,"_39":462,"_41":26,"_67":88,"_190":-5,"_68":30,"_192":-5,"_283":463,"_17":464},{"_35":455,"_13":456,"_64":457,"_45":219,"_37":38,"_185":186,"_187":24,"_39":458,"_41":26,"_67":189,"_190":459,"_68":30,"_192":-5,"_283":460,"_17":461},{"_35":448,"_13":449,"_64":450,"_45":219,"_37":38,"_185":186,"_187":24,"_39":451,"_41":26,"_67":189,"_190":452,"_68":30,"_192":-5,"_283":453,"_17":454},{"_35":212,"_13":213,"_64":214,"_45":-5,"_37":38,"_185":186,"_187":24,"_39":445,"_41":26,"_67":88,"_190":-5,"_68":30,"_192":-5,"_283":446,"_17":447},{"_35":438,"_13":439,"_64":440,"_45":214,"_37":38,"_185":186,"_187":24,"_39":441,"_41":26,"_67":198,"_190":442,"_68":30,"_192":-5,"_283":443,"_17":444},{"_35":431,"_13":432,"_64":433,"_45":214,"_37":38,"_185":186,"_187":24,"_39":434,"_41":26,"_67":198,"_190":435,"_68":30,"_192":-5,"_283":436,"_17":437},{"_35":424,"_13":425,"_64":426,"_45":214,"_37":38,"_185":186,"_187":24,"_39":427,"_41":26,"_67":189,"_190":428,"_68":30,"_192":-5,"_283":429,"_17":430},{"_35":417,"_13":418,"_64":419,"_45":214,"_37":38,"_185":186,"_187":24,"_39":420,"_41":26,"_67":189,"_190":421,"_68":30,"_192":-5,"_283":422,"_17":423},{"_35":410,"_13":411,"_64":412,"_45":214,"_37":38,"_185":186,"_187":24,"_39":413,"_41":26,"_67":189,"_190":414,"_68":30,"_192":-5,"_283":415,"_17":416},{"_35":403,"_13":404,"_64":405,"_45":214,"_37":38,"_185":186,"_187":24,"_39":406,"_41":26,"_67":189,"_190":407,"_68":30,"_192":-5,"_283":408,"_17":409},{"_35":396,"_13":397,"_64":398,"_45":214,"_37":38,"_185":186,"_187":24,"_39":399,"_41":26,"_67":21,"_190":400,"_68":30,"_192":-5,"_283":401,"_17":402},{"_35":389,"_13":390,"_64":391,"_45":214,"_37":38,"_185":186,"_187":24,"_39":392,"_41":26,"_67":189,"_190":393,"_68":30,"_192":-5,"_283":394,"_17":395},{"_35":382,"_13":383,"_64":384,"_45":214,"_37":38,"_185":186,"_187":24,"_39":385,"_41":26,"_67":189,"_190":386,"_68":30,"_192":-5,"_283":387,"_17":388},{"_35":208,"_13":172,"_64":209,"_45":-5,"_37":38,"_185":186,"_187":24,"_39":379,"_41":26,"_67":88,"_190":-5,"_68":30,"_192":-5,"_283":380,"_17":381},{"_35":375,"_13":362,"_64":357,"_45":209,"_37":38,"_185":186,"_187":24,"_39":376,"_41":26,"_67":88,"_190":-5,"_68":30,"_192":-5,"_283":377,"_17":378},{"_35":371,"_13":346,"_64":366,"_45":357,"_37":38,"_185":186,"_187":24,"_39":372,"_41":26,"_67":88,"_190":-5,"_68":30,"_192":-5,"_283":373,"_17":374},{"_35":363,"_13":364,"_64":365,"_45":366,"_37":38,"_185":186,"_187":24,"_39":367,"_41":26,"_67":21,"_190":368,"_68":30,"_192":-5,"_283":369,"_17":370},{"_35":355,"_13":66,"_64":356,"_45":357,"_37":38,"_185":186,"_187":24,"_39":358,"_41":26,"_67":21,"_190":359,"_68":30,"_192":-5,"_283":360,"_17":361},{"_35":351,"_13":324,"_64":319,"_45":209,"_37":38,"_185":186,"_187":24,"_39":352,"_41":26,"_67":88,"_190":-5,"_68":30,"_192":-5,"_283":353,"_17":354},{"_35":347,"_13":346,"_64":341,"_45":319,"_37":38,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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 `

History · pr-summarizer