Reference is local semantic search for your files and code, built for AI agents. No cloud, nothing leaves your machine.
Ask it "how did I implement rate limiting here" and get your actual code back, cited down to the exact function, not generic advice.
Live index that updates as you save, code-aware chunking (tree-sitter), and a built-in MCP server (/search, /explain, /find_similar, /check_doc_drift)so Claude Code gets precise cited results instead of burning tokens on grep loops.
