Codebase Memory MCP

codebase-memory-mcp is an MCP server with a native C backend that builds a persistent local knowledge graph of a repository, covering source code, documentation, configuration and infrastructure files. It exposes 17 MCP tools for symbol, text and semantic search, callers and dependencies, file outlines, change-impact analysis and snapshot comparison. The graph can also be queried directly from the CLI.\n\nIt parses many languages and file formats using vendored grammars, and adds Hybrid LSP type resolution for supported languages. It can trace relationships through Docker, Kubernetes, Helm, Terraform, Ansible and CI configuration, and links documentation sections to code. An experimental Smart CI feature finds related tests for supported C/C++ harnesses. The project reports reduced token use from targeted graph queries; a YouTube review cited a 120x reduction and 158 languages, while the README points to its own scoped measurements and an arXiv paper.\n\nThe installer configures 46 automatic or conditional client integrations, including client config, skills, agent profiles and hooks. Indexing and graph storage run locally and need no hosted service or API key. An optional companion, CBM Lens (open beta v0.0.1), provides a source reader, architecture maps, a 3D Galaxy graph view, coverage diagnostics and local code chat using an optionally downloaded browser model. Support level varies by client.