\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",[151],"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",[159],"3d37c7eb-e23c-4c61-ac2a-32db85bc7e93","019eb210-d0df-724e-8ef0-12a009395958",["D",1781103906945],"directory",[123],"8d48fe9b-81ba-424e-8510-14e50be10406","librarian","019eb210-d0df-724e-8eef-d61502f023fa",["D",1781103906945],[170],"490ea20d-0700-465e-a51e-5973a58cf309","lib","019eb210-d0df-724e-8eef-aed75fe9248d",["D",1781103906945],[175],"9e310058-7ef2-46b4-9cc4-f9a337443b0e","frontend","019eb210-d0df-724e-8eef-a0d067f439ac",["D",1781103906945],[180],"94ef85bd-59a7-4244-9aa3-fe2507888462","components","019eb210-d0df-724e-8eef-98bf7ecc2a38",["D",1781103906945],[185],"pulls","forks","envVars",{"_195":197,"_198":197},"connections",{"_195":56,"_196":56},"count","unfilledCount",4,"emptyCount",{"_20":184,"_13":185,"_135":186,"_137":-5,"_138":21,"_139":140,"_141":52,"_22":475,"_29":56,"_143":167,"_145":-5,"_147":40,"_148":-5,"_240":476,"_94":477},{"_20":468,"_13":469,"_135":470,"_137":186,"_138":21,"_139":140,"_141":52,"_22":471,"_29":56,"_143":144,"_145":472,"_147":40,"_148":-5,"_240":473,"_94":474},{"_20":461,"_13":462,"_135":463,"_137":186,"_138":21,"_139":140,"_141":52,"_22":464,"_29":56,"_143":144,"_145":465,"_147":40,"_148":-5,"_240":466,"_94":467},{"_20":454,"_13":455,"_135":456,"_137":186,"_138":21,"_139":140,"_141":52,"_22":457,"_29":56,"_143":144,"_145":458,"_147":40,"_148":-5,"_240":459,"_94":460},{"_20":447,"_13":448,"_135":449,"_137":186,"_138":21,"_139":140,"_141":52,"_22":450,"_29":56,"_143":144,"_145":451,"_147":40,"_148":-5,"_240":452,"_94":453},{"_20":440,"_13":441,"_135":442,"_137":186,"_138":21,"_139":140,"_141":52,"_22":443,"_29":56,"_143":144,"_145":444,"_147":40,"_148":-5,"_240":445,"_94":446},{"_20":433,"_13":434,"_135":435,"_137":186,"_138":21,"_139":140,"_141":52,"_22":436,"_29":56,"_143":144,"_145":437,"_147":40,"_148":-5,"_240":438,"_94":439},{"_20":179,"_13":180,"_135":181,"_137":-5,"_138":21,"_139":140,"_141":52,"_22":430,"_29":56,"_143":167,"_145":-5,"_147":40,"_148":-5,"_240":431,"_94":432},{"_20":423,"_13":424,"_135":425,"_137":181,"_138":21,"_139":140,"_141":52,"_22":426,"_29":56,"_143":144,"_145":427,"_147":40,"_148":-5,"_240":428,"_94":429},{"_20":174,"_13":175,"_135":176,"_137":-5,"_138":21,"_139":140,"_141":52,"_22":420,"_29":56,"_143":167,"_145":-5,"_147":40,"_148":-5,"_240":421,"_94":422},{"_20":413,"_13":414,"_135":415,"_137":176,"_138":21,"_139":140,"_141":52,"_22":416,"_29":56,"_143":144,"_145":417,"_147":40,"_148":-5,"_240":418,"_94":419},{"_20":406,"_13":407,"_135":408,"_137":176,"_138":21,"_139":140,"_141":52,"_22":409,"_29":56,"_143":144,"_145":410,"_147":40,"_148":-5,"_240":411,"_94":412},{"_20":169,"_13":170,"_135":171,"_137":-5,"_138":21,"_139":140,"_141":52,"_22":403,"_29":56,"_143":167,"_145":-5,"_147":40,"_148":-5,"_240":404,"_94":405},{"_20":396,"_13":397,"_135":398,"_137":171,"_138":21,"_139":140,"_141":52,"_22":399,"_29":56,"_143":154,"_145":400,"_147":40,"_148":-5,"_240":401,"_94":402},{"_20":389,"_13":390,"_135":391,"_137":171,"_138":21,"_139":140,"_141":52,"_22":392,"_29":56,"_143":154,"_145":393,"_147":40,"_148":-5,"_240":394,"_94":395},{"_20":382,"_13":383,"_135":384,"_137":171,"_138":21,"_139":140,"_141":52,"_22":385,"_29":56,"_143":144,"_145":386,"_147":40,"_148":-5,"_240":387,"_94":388},{"_20":375,"_13":376,"_135":377,"_137":171,"_138":21,"_139":140,"_141":52,"_22":378,"_29":56,"_143":144,"_145":379,"_147":40,"_148":-5,"_240":380,"_94":381},{"_20":368,"_13":369,"_135":370,"_137":171,"_138":21,"_139":140,"_141":52,"_22":371,"_29":56,"_143":144,"_145":372,"_147":40,"_148":-5,"_240":373,"_94":374},{"_20":361,"_13":362,"_135":363,"_137":171,"_138":21,"_139":140,"_141":52,"_22":364,"_29":56,"_143":144,"_145":365,"_147":40,"_148":-5,"_240":366,"_94":367},{"_20":354,"_13":355,"_135":356,"_137":171,"_138":21,"_139":140,"_141":52,"_22":357,"_29":56,"_143":106,"_145":358,"_147":40,"_148":-5,"_240":359,"_94":360},{"_20":347,"_13":348,"_135":349,"_137":171,"_138":21,"_139":140,"_141":52,"_22":350,"_29":56,"_143":144,"_145":351,"_147":40,"_148":-5,"_240":352,"_94":353},{"_20":340,"_13":341,"_135":342,"_137":171,"_138":21,"_139":140,"_141":52,"_22":343,"_29":56,"_143":144,"_145":344,"_147":40,"_148":-5,"_240":345,"_94":346},{"_20":164,"_13":123,"_135":165,"_137":-5,"_138":21,"_139":140,"_141":52,"_22":337,"_29":56,"_143":167,"_145":-5,"_147":40,"_148":-5,"_240":338,"_94":339},{"_20":333,"_13":320,"_135":315,"_137":165,"_138":21,"_139":140,"_141":52,"_22":334,"_29":56,"_143":167,"_145":-5,"_147":40,"_148":-5,"_240":335,"_94":336},{"_20":329,"_13":304,"_135":324,"_137":315,"_138":21,"_139":140,"_141":52,"_22":330,"_29":56,"_143":167,"_145":-5,"_147":40,"_148":-5,"_240":331,"_94":332},{"_20":321,"_13":322,"_135":323,"_137":324,"_138":21,"_139":140,"_141":52,"_22":325,"_29":56,"_143":106,"_145":326,"_147":40,"_148":-5,"_240":327,"_94":328},{"_20":313,"_13":250,"_135":314,"_137":315,"_138":21,"_139":140,"_141":52,"_22":316,"_29":56,"_143":106,"_145":317,"_147":40,"_148":-5,"_240":318,"_94":319},{"_20":309,"_13":282,"_135":277,"_137":165,"_138":21,"_139":140,"_141":52,"_22":310,"_29":56,"_143":167,"_145":-5,"_147":40,"_148":-5,"_240":311,"_94":312},{"_20":305,"_13":304,"_135":299,"_137":277,"_138":21,"_139":140,"_141":52,"_22":306,"_29":56,"_143":167,"_145":-5,"_147":40,"_148":-5,"_240":307,"_94":308},{"_20":296,"_13":297,"_135":298,"_137":299,"_138":21,"_139":140,"_141":52,"_22":300,"_29":56,"_143":106,"_145":301,"_147":40,"_148":-5,"_240":302,"_94":303},{"_20":292,"_13":291,"_135":286,"_137":277,"_138":21,"_139":140,"_141":52,"_22":293,"_29":56,"_143":167,"_145":-5,"_147":40,"_148":-5,"_240":294,"_94":295},{"_20":283,"_13":284,"_135":285,"_137":286,"_138":21,"_139":140,"_141":52,"_22":287,"_29":56,"_143":144,"_145":288,"_147":40,"_148":-5,"_240":289,"_94":290},{"_20":275,"_13":250,"_135":276,"_137":277,"_138":21,"_139":140,"_141":52,"_22":278,"_29":56,"_143":106,"_145":279,"_147":40,"_148":-5,"_240":280,"_94":281},{"_20":271,"_13":257,"_135":252,"_137":165,"_138":21,"_139":140,"_141":52,"_22":272,"_29":56,"_143":167,"_145":-5,"_147":40,"_148":-5,"_240":273,"_94":274},{"_20":267,"_13":266,"_135":261,"_137":252,"_138":21,"_139":140,"_141":52,"_22":268,"_29":56,"_143":167,"_145":-5,"_147":40,"_148":-5,"_240":269,"_94":270},{"_20":258,"_13":259,"_135":260,"_137":261,"_138":21,"_139":140,"_141":52,"_22":262,"_29":56,"_143":106,"_145":263,"_147":40,"_148":-5,"_240":264,"_94":265},{"_20":249,"_13":250,"_135":251,"_137":252,"_138":21,"_139":140,"_141":52,"_22":253,"_29":56,"_143":106,"_145":254,"_147":40,"_148":-5,"_240":255,"_94":256},{"_20":158,"_13":159,"_135":160,"_137":-5,"_138":21,"_139":140,"_141":52,"_22":246,"_29":56,"_143":106,"_145":162,"_147":40,"_148":-5,"_240":247,"_94":248},{"_20":150,"_13":151,"_135":50,"_137":-5,"_138":21,"_139":30,"_141":52,"_22":243,"_29":153,"_143":154,"_145":155,"_147":40,"_148":156,"_240":244,"_94":245},{"_20":133,"_13":134,"_135":136,"_137":-5,"_138":21,"_139":140,"_141":52,"_22":239,"_29":56,"_143":144,"_145":146,"_147":40,"_148":-5,"_240":241,"_94":242},["D",1781103906945],"children",[],[134],["D",1782395634911],[],[151],["D",1781103906945],[],[159],"37c375fd-15f4-439f-b226-43b20aadb543","SKILL.md","019eb210-d0df-724e-8ef0-08fd176edb70","019eb210-d0df-724e-8ef0-0ca76c8efe90",["D",1781103906945],"---\nname: 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 `

Branches1

Branches
1