## Why App-server clients need a way to update a thread's next-turn settings without starting a turn, adding transcript content, or waiting for turn lifecycle events. This gives settings UI a direct path for durable thread settings while clients observe the eventual effective state through a notification. This is a simplified rework of PR https://github.com/openai/codex/pull/22509. In particular, it changes the `thread/settings/update` api to return immediately rather than waiting and returning the effective (updated) thread settings. This makes the new api consistent with `turn/start` and greatly reduces the complexity of the implementation relative to the earlier attempt. ## What Changed - Adds experimental `thread/settings/update` with partial-update request fields and an empty acknowledgment response. - Adds experimental `thread/settings/updated`, carrying full effective `ThreadSettings` and scoped by `threadId` to subscribed clients for the affected thread. - Shares durable settings validation with `turn/start`, including `sandboxPolicy` plus `permissions` rejection and `serviceTier: null` clearing. - Emits the same settings notification when `turn/start` overrides change the stored effective thread settings. - Regenerates app-server protocol schema fixtures and updates `app-server/README.md`.
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.
