A catalog of ChatGPT & Codex plugins, sorted by people.
AGENTS.md is the file Codex reads before it touches your code. It's where you tell it how to install, test and lint, and what not to touch. Fill in what you know, skip what you don't, and copy the result into your repo root.
Nothing you paste here gets sent anywhere. It's plain JavaScript in this page. We wrote it, so if it gets something wrong, tell us at hello@pickaplugin.com.
A plain Markdown file in your repo that tells coding agents how to work on the project: what it is, how to build and test it, and the rules to follow. Codex reads it, and so do a lot of other agents. The format is described at agents.md.
In the root of your repo. Codex also picks up AGENTS.md files in subfolders, and the one closest to the file being edited wins, so big monorepos can have one per package.
The commands an agent should run (install, test, lint), anything unusual about your stack, and the things it must not do. Short and specific beats long and vague. If you'd tell a new teammate on day one, it belongs here.
Claude Code reads CLAUDE.md. A common trick is a one-line CLAUDE.md that just says @AGENTS.md, so you only keep one file up to date.
No. It just turns what you type into tidy Markdown. Nothing leaves your browser.
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