codebase-memory-mcp

Indexes a repo into a persistent knowledge graph (functions, classes, call chains, routes) across 158 languages via tree-sitter, then exposes it to any MCP client as a query API. Ships as a single static binary with zero dependencies. A preprint (arXiv:2603.27277, 31 real-world repos) reports ~10x fewer tokens and 2.1x fewer tool calls than file-by-file exploration at 83% answer quality. The savings come from feeding the agent less, not from the tool being smarter.