https://developers.openai.com/codex/cli ### Install Install the Codex CLI with npm. ```shell npm i -g @openai/codex ``` ### Run Run Codex in a terminal. It can inspect your repository, edit files, and run commands. ```shell codex ``` The first time you run Codex, you'll be prompted to sign in. Authenticate with your ChatGPT account or an API key. ### Upgrade New versions of the Codex CLI are released regularly. See the [changelog](https://developers.openai.com/codex/changelog) for release notes. To upgrade with npm, run: ```shell npm i -g @openai/codex@latest ```