**Stack position:** [5 of 7] ## Summary This PR adds `Op::ThreadSettings`, a queued settings-only update mechanism for changing stored thread settings without starting a new turn. It also removes the legacy `Op::OverrideTurnContext` in the same layer, so reviewers can see the replacement and deletion together. ## Changes - Add `Op::ThreadSettings` for settings-only queued updates. - Emit `ThreadSettingsApplied` with the effective thread settings snapshot after core applies an update. - Route settings-only updates through the same submission queue as user input. - Migrate remaining `OverrideTurnContext` tests and callers to the queued `Op::ThreadSettings` path. - Delete `Op::OverrideTurnContext` from the core protocol and submission loop. This stack addresses #20656 and #22090. ## Stack 1. [1 of 7] [Add thread settings to UserInput](https://github.com/openai/codex/pull/23080) 2. [2 of 7] [Remove UserInputWithTurnContext](https://github.com/openai/codex/pull/23081) 3. [3 of 7] [Remove UserTurn](https://github.com/openai/codex/pull/23075) 4. [4 of 7] [Placeholder for OverrideTurnContext cleanup](https://github.com/openai/codex/pull/23087) 5. [5 of 7] [Replace OverrideTurnContext with ThreadSettings](https://github.com/openai/codex/pull/22508) (this PR) 6. [6 of 7] [Add app-server thread settings API](https://github.com/openai/codex/pull/22509) 7. [7 of 7] [Sync TUI thread settings](https://github.com/openai/codex/pull/22510)
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.
