codebase-memory-mcp

codebase-memory-mcp indexes a repository into a persistent SQLite knowledge graph (tree-sitter ASTs plus a hybrid LSP layer) and exposes it over MCP. It answers the same graph-shaped questions as codegraph — what calls this, what a change reaches, where the hubs, cycles, and clusters are — plus cross-session Architecture Decision Records. Query it instead of re-reading files when the server is installed.

Evidence dimensions: dependency, semantic, and change-impact.

When to use

Use when the session exposes mcp__codebase-memory-mcp__* tools (verify with /mcp; the server reports as codebase-memory-mcp). Index during the system-map step, then query during evidence gathering for module structure, call/dependency edges, cycles, blast radius, and Louvain module clusters. Prefer it over tools-codegraph only when its index is present and fresh; otherwise use whichever graph tool is current.