AGENTS.md examples from real projects

How real projects brief Codex, Cursor and every other agent that reads AGENTS.md.

Your trail

Files you open will collect here, so you can find them again.

Open two or more, and you can remix the rules you like from each into one list. Kept in this browser only.

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alton47 Hiding risky files

alton47AGENTS.md

threejs-skills

alton47/threejs-skills/AGENTS.md

This file is for AI coding agents (Claude, Copilot, Cursor, Codex, etc.) that have write access to this repository. This repo contains AI Skills for Three.js — structured markdown files that teach AI agents how to use Three.js correctly. The goal is concise, accurate, non-hallucinated Three.js knowledge. Before committing skill changes, test with: Open an issue or PR if you spot a hallucinated API, outdated pattern, or missing skill domain.

137mo agoReviewMount

CLAUDE.md vs AGENTS.md

About AGENTS.md

What is AGENTS.md?

An open format for instructions to coding agents, read by Codex, Cursor and others. Think of it as a README written for agents.

Where does it go?

At the repository root, with more specific files in subdirectories. Agents read the one closest to the file they're editing.

What should it contain?

Setup and test commands, code style, and the rules a new contributor would need to know.

Does Claude Code read it?

Claude Code reads CLAUDE.md. A one-line CLAUDE.md that points at AGENTS.md covers both.