AGENTS.md examples from real projects

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

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SethGammon Hiding risky files

SethGammonAGENTS.md

Citadel

SethGammon/Citadel/AGENTS.md

An agent orchestration system for Codex. This repo IS the harness. The harness is a collection of skills, agents, hooks, and state files that enable Codex to operate autonomously on any codebase. It provides: - Intent routing (/do) that dispatches tasks to the right tool - Campaign persistence across sessions - Parallel agent coordination with discovery sharing - Automated quality enforcement through lifecycle hooks Always run tests after modifying hooks or skills. Five levels: Adding a new skill: create skills/{name}/SKILL.md,…

92716d 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.