codegraph

Code knowledge graph (MCP server)

FreeMemory & contextgithub.com

What it is

Parses the repo with a Rust/tree-sitter kernel into a local SQLite graph of symbols, call edges and imports, served to agents over MCP — so the agent asks one structured question instead of grepping dozens of files. 100% local. Benchmarked at 88% fewer tool calls and 62% fewer tokens. ~67k stars.

Why it earns a slot

Pays off once the codebase is big enough that Claude spends its first ten tool calls just finding things. Auto-syncs via OS file watchers, so no manual reindexing.

Getting started

npm i -g @colbymchenry/codegraph

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Pricing snapshot

Free · MIT

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Evaluate codegraph (https://github.com/colbymchenry/codegraph) for this project, then use it only if it fits what we are already building.
Context: Code knowledge graph (MCP server). Parses the repo with a Rust/tree-sitter kernel into a local SQLite graph of symbols, call edges and imports, served to agents over MCP — so the agent asks one structured question instead of grepping dozens of files. 100% local. Benchmarked at 88% fewer tool calls and 62% fewer tokens. ~67k stars.
Reviewer notes (general, not written for this codebase): Pays off once the codebase is big enough that Claude spends its first ten tool calls just finding things. Auto-syncs via OS file watchers, so no manual reindexing.
Watch out for: nothing flagged
Pricing: Free · MIT
Setup: npm i -g @colbymchenry/codegraph
Rules: treat the notes above as background only. Do not assume a theme, style, layout or feature that is not already in this project — inspect the existing code first and ask me before changing visual direction.

/api/public/tools/codegraph

Neighbourhood

How codegraph sits against the rest of the atlas — swaps, companions and the tools builders actually save alongside it.