// the find
colbymchenry/codegraph
Pre-indexed code knowledge graph, auto syncs on code changes, for Claude Code, Codex, Gemini, Cursor, OpenCode, AntiGravity, Kiro, and Hermes Agent — fewer tokens, fewer tool calls, 100% local
CodeGraph is an MCP server that pre-builds a structural knowledge graph of your codebase using a Rust/tree-sitter parser, then serves it to AI coding agents via a single `codegraph_explore` tool call. Instead of the agent grepping and reading files one by one to understand structure, it gets the relevant symbols, call paths, and blast radius in one shot. Aimed at anyone using Claude Code, Cursor, Codex, or similar agents on medium-to-large codebases.
The single-tool MCP design is the right call — exposing one `codegraph_explore` instead of a menu of graph primitives means agents don't have to figure out which graph query to run. The Rust kernel with byte-for-byte parity verification against the reference engine is a serious engineering choice; they tested it on the Linux kernel (70k files, 2M symbols) on a 2-core VPS and it finishes cleanly. The adaptive resource sizing — container-aware core counts, honest RAM measurement, per-project cost profiling — means it doesn't assume it owns the machine. The cross-language bridge support for React Native (legacy bridge, TurboModules, Fabric, Expo modules) and Swift/ObjC is genuinely difficult to get right and they've validated it against real codebases at three sizes each.
The benchmark numbers are entirely self-reported by the authors, using questions they wrote against repos they chose — there's no third-party replication. The 'small-repo floor effect' footnotes quietly admit the tool adds overhead on small codebases, which is a lot of real projects. Cross-language bridge edges are tagged `provenance:'heuristic'` — the graph will silently include edges that are guesses, and agents following the 'don't re-verify with grep' instruction will trust them. The waitlist banner for the hosted 'CodeGraph platform' signals this is positioning toward a commercial product, which matters for anyone making a long-term bet on the local tool.