Codex — nothing to install

Codex reads AGENTS.md natively. The instantiated AGENTS.md at the project root is already everything Codex needs — no adapter file required.

Details (per OpenAI's docs): Codex builds its instruction chain from ~/.codex/AGENTS.md (global, personal) plus every AGENTS.md from the project root down to the working directory.

Optional power-user tip: save your own reusable prompts as Markdown files in ~/.codex/prompts/ (e.g. ~/.codex/prompts/review.md) and run them in Codex with /prompts:review.