CodeGraph is a local, pre-indexed knowledge graph of a software codebase that helps AI coding agents understand relationships across files and symbols. Developers use it to retrieve focused code context, keep the graph synchronized with changes, and support agents such as Claude Code, Codex, Cursor, and Gemini. The catalogue entries provide CodeGraph skills and instructions for those agent workflows.
Borrowing it
Nothing to install: this file belongs to colbymchenry/codegraph. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/colbymchenry/codegraph/main/AGENTS.mdgit clone --depth 1 https://github.com/colbymchenry/codegraphWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/instructions/colbymchenry/codegraph/agents-md)<a href="https://agentmods.dev/instructions/colbymchenry/codegraph/agents-md"><img src="https://agentmods.dev/badge/instructions/colbymchenry/codegraph/agents-md/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/instructions/colbymchenry/codegraph/agents-md"><img src="https://agentmods.dev/badge/instructions/colbymchenry/codegraph/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.09436 | $0.09436 |
| Opus 5.5 | $0.03774 | $0.03774 |
| Sonnet 5.5 | $0.01887 | $0.01887 |
| Haiku 4.5 | $0.00944 | $0.00944 |
Grade C, and why
codegraph AGENTS.md scanned grade C with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 7d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Recursive force deletehighDestructive command
rm -rf with a variable or a broad path is one typo away from removing the wrong tree.
npm run clean # rm -rf dist How it starts
The opening of the file, as written. The whole thing — 291 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
Canonical project guidance for coding agents working in this repository (Codex/Astra, Claude Code via @AGENTS.md, Cursor, etc.).
Codex size note: root AGENTS.md is intentionally kept near ~35 KiB (critical build/test/arch/retrieval rules retained). Longer validation methodology + the Excalidraw worked example live in docs/AGENTS.md. This environment sets project_doc_max_bytes = 49152 so root (and root+docs/ when cwd is under docs/) are not silently truncated at the 32 KiB default.
Project Overview
CodeGraph is a local-first code intelligence library + CLI + MCP server. It parses any supported codebase with tree-sitter, stores symbols/edges/files in SQLite (FTS5), and exposes a knowledge graph to AI agents (Claude Code, Cursor, Codex CLI, opencode) over MCP. Per-project data lives in .codegraph/. Extraction is deterministic — derived from AST, not LLM-summarized.
Distributed as @colbymchenry/codegraph on npm; same binary serves as installer, indexer, and MCP server.
Build, Test, Run
npm run build # tsc + copy schema.sql and *.wasm + build the viewer into dist/; chmods dist/bin/codegraph.js
npm run build:lib # the viewer's components as @colbymchenry/codegraph-ui (ui/dist) — NOT part of `build`
npm run dev # tsc --watch
npm run clean # rm -rf dist
npm test # vitest run (all)
npm run test:watch
npm run test:eval # only __tests__/evaluation/
npm run eval # build then run __tests__/evaluation/runner.ts via tsx
npm run cli # build then run the local dist binary
# Single test file / pattern
npx vitest run __tests__/installer-targets.test.ts
npx vitest run __tests__/extraction.test.ts -t "TypeScript"
copy-assets (called from build) copies src/db/schema.sql and all src/extraction/wasm/*.wasm files into dist/. Any new SQL or grammar wasm must be copied or it won't ship.
One other build step writes into dist/ and is subject to the same rule: build:ui builds the
browser viewer into dist/viewer/ (never dist/ui/ — that's the terminal ui).
scripts/check-ui-build.mjs asserts both dist/viewer/ and the copied grammars in
dist/extraction/wasm/ after every build and inside every release archive — the viewer's syntax
highlighting reads a file with the same grammar the engine indexed it with, so a missing wasm is an
unhighlighted screen as well as an extraction gap.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 7d ago Changed · +39 tokens per session 0260739809bb
- 17d ago Changed · +42 tokens per session e5242b2671d1
- 25d ago Changed · +3 lines · +261 tokens per session fff3c0f2a9f8
- 28d ago Changed · +4 lines · +153 tokens per session 23b4ae458ac0
- 1mo ago Changed · +26 tokens per session 1dbf6547d7fd
- 1mo ago Changed · +73 tokens per session 478680c9e967
- 1mo ago First seen · 284 lines · 8,842 tokens per session scan C 11df1a855701
codegraph AGENTS.md is an instructions file published in the GitHub repository colbymchenry/codegraph (75,627 stars, last pushed today), licensed MIT. It adds 9,436 tokens to every session, about $0.0377 per session on Opus 5.5. A static security scan graded it C with 1 finding (recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-08.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
vscode model-prompts.instructions.md
Model-specific prompt authoring and registry guidelines.