概要
Librarian is a persistent knowledge management skill for Claude Code designed to build a custom library of project-specific insights. By integrating semantic search with a smart ranking algorithm—factoring in relevance, recency, and utility—Librarian surfaces past solutions exactly when they are needed. It moves beyond generic documentation by allowing developers to record 'aha' moments, complex workarounds, and non-obvious patterns in real-time, ensuring that valuable context is preserved and searchable across different AI tools and development sessions.