## Summary This PR fully reverts the previously merged Agent Identity runtime integration from the old stack: https://github.com/openai/codex/pull/17387/changes It removes the Codex-side task lifecycle wiring, rollout/session persistence, feature flag plumbing, lazy `auth.json` mutation, background task auth paths, and request callsite changes introduced by that stack. This leaves the repo in a clean pre-AgentIdentity integration state so the follow-up PRs can reintroduce the pieces in smaller reviewable layers. ## Stack 1. This PR: full revert 2. https://github.com/openai/codex/pull/18871: move Agent Identity business logic into a crate 3. https://github.com/openai/codex/pull/18785: add explicit AgentIdentity auth mode and startup task allocation 4. https://github.com/openai/codex/pull/18811: migrate auth callsites through AuthProvider ## Testing Tests: targeted Rust checks, cargo-shear, Bazel lock check, and CI.
npm i -g @openai/codex
or brew install --cask codex
Codex CLI is a coding agent from OpenAI that runs locally on your computer.
If you want Codex in your code editor (VS Code, Cursor, Windsurf), install in your IDE.
If you want the desktop app experience, run
codex app or visit the Codex App page.
If you are looking for the cloud-based agent from OpenAI, Codex Web, go to chatgpt.com/codex.
Quickstart
Installing and running Codex CLI
Install globally with your preferred package manager:
# Install using npm
npm install -g @openai/codex
# Install using Homebrew
brew install --cask codex
Then simply run codex to get started.
You can also go to the latest GitHub Release and download the appropriate binary for your platform.
Each GitHub Release contains many executables, but in practice, you likely want one of these:
- macOS
- Apple Silicon/arm64:
codex-aarch64-apple-darwin.tar.gz - x86_64 (older Mac hardware):
codex-x86_64-apple-darwin.tar.gz
- Apple Silicon/arm64:
- Linux
- x86_64:
codex-x86_64-unknown-linux-musl.tar.gz - arm64:
codex-aarch64-unknown-linux-musl.tar.gz
- x86_64:
Each archive contains a single entry with the platform baked into the name (e.g., codex-x86_64-unknown-linux-musl), so you likely want to rename it to codex after extracting it.
Using Codex with your ChatGPT plan
Run codex and select Sign in with ChatGPT. We recommend signing into your ChatGPT account to use Codex as part of your Plus, Pro, Business, Edu, or Enterprise plan. Learn more about what's included in your ChatGPT plan.
You can also use Codex with an API key, but this requires additional setup.
Docs
This repository is licensed under the Apache-2.0 License.
