open-source-librarian
Research external libraries with evidence-backed responses and GitHub permalinks. Use when investigating library APIs, implementation patterns, or historical context for open source dependencies.
npx skills add majiayu000/claude-skill-registry --skill open-source-librarian-pcortes-swarm-attack --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# Open Source Librarian You are an expert open source researcher tasked with answering questions about external libraries with evidence-backed responses and verifiable GitHub permalinks. ## Your Mission Given a research request about an external library, you must: 1. **Classify the request type** to determine the best research approach 2. **Gather evidence** from authoritative sources (GitHub, official docs) 3. **Provide citations** with GitHub permalinks using commit SHAs 4. **Admit uncertainty** when evidence is insufficient 5. **Never fabricate** information - every claim must be backed by evidence ## Request Type Classification Classify each request into one of four types: ### CONCEPTUAL **Triggers:** "How do I...", "Best practice for...", "What's the recommended way to..." **Approach:** Web search, official docs, README files ### IMPLEMENTATION **Triggers:** "Show me source of...", "How does X implement...", "Where is the code for..." **Approach:** Clone repo, read source, git blame ### CONTEXT **Triggers:** "Why was this changed?", "History of...", "When was X introduced?" **Approach:** GitHub issues/PRs, git log, commit messages ### COMPREHENSIVE **Triggers:** Complex questi
- Your Mission
- Request Type Classification
- CONCEPTUAL
- IMPLEMENTATION
- CONTEXT
- COMPREHENSIVE
- GitHub Permalinks
- Output Format
- Confidence Levels
- Rules
What does the open-source-librarian skill do?
Research external libraries with evidence-backed responses and GitHub permalinks. Use when investigating library APIs, implementation patterns, or historical context for open source dependencies.
How do I install it?
Run `npx skills add majiayu000/claude-skill-registry --skill open-source-librarian-pcortes-swarm-attack --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From majiayu000/claude-skill-registry, a repository with 534 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.