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Claude 69d4fab0b3 Fix skills.json determinism (CI blocker) and upgrade the playground

The check-generated CI step was failing with "web/skills.json is stale"
because build-skills.mjs stamped a wall-clock generatedAt into the file, so
every rebuild differed and git diff --exit-code never matched.

- web/build-skills.mjs: drop the unused generatedAt timestamp -> deterministic
  output the CI staleness check can verify. Also tags each skill with its tier.
- skill-tiers.json: single machine-readable source for tier membership
  (Production-Ready / Experimental); TIERS.md points to it.

Playground upgrades (hosted on GitHub Pages):
- Tier filter (Production-Ready / Stable / Experimental) + per-tile tier badges.
- "Use this skill in another tool" panel: copy the instructions formatted for
  ChatGPT, Gemini, or raw — mirrors the generated exports/ files.
- web/README documents the new options and the deterministic build.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016JWn5jRD5tcEFKrubjQ6Px

2026-06-17 08:16:46 +00:00

2.1 KiB

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Skill Playground

A zero-backend web app to run any skill in this repo with your own Claude API key. Pick a skill → it becomes a form → fill it in → Claude executes the skill's instructions and streams the result. Your key is stored only in your browser (localStorage) and sent directly to api.anthropic.com. Nothing touches a server we own.

What you can do

Search and filter the full library by keyword, bundle, and maturity tier (🟢 Production-Ready · 🔵 Stable · 🟡 Experimental) — every tile shows its tier.
Run a skill against the Claude API and stream the output (copy or download as .md).
Use it in another tool — each skill has a "Use this skill in another tool" panel that copies the instructions formatted for ChatGPT, Gemini, or as raw text, so you can paste it into any assistant. (Same output as the generated exports/ files.)

Run locally

node web/build-skills.mjs        # regenerate skills.json from skills/
cd web && python3 -m http.server 8000
# open http://localhost:8000

It must be served over HTTP (not opened as a file:// URL) so fetch('skills.json') works.

Paste a key from console.anthropic.com and run.

How it works

build-skills.mjs scans ../skills/*/SKILL.md, parses the frontmatter and the Required Inputs section, tags each skill with its tier (from ../skill-tiers.json), and writes a deterministic skills.json (the UI's data source — no timestamp, so CI can verify it stays in sync).
app.js sends the skill's instruction body as the system prompt and the filled-in fields as the user message, using the Anthropic Messages API with anthropic-dangerous-direct-browser-access: true for direct browser calls.

Keep it in sync

Re-run node web/build-skills.mjs whenever skills are added or edited, and commit the updated skills.json. (Or wire it into CI / a pre-commit hook.)

Deploy

It's fully static — host the web/ folder on GitHub Pages, Netlify, Vercel, or any static host. No environment variables, no server.

2.1 KiB Raw Blame History