Builds on #23502. ## Why #23502 adds the app-server `thread/settings/update` API and matching `thread/settings/updated` notification. The TUI already lets users change thread-scoped settings such as model, reasoning effort, service tier, approvals, permissions, personality, and collaboration mode, but those updates need to flow through the app server so embedded and connected clients observe the same thread state. This is a rework (simplification) of PR https://github.com/openai/codex/pull/22510. It has the same functionality, but the underlying `thread/settings/update` api is now simpler in that it no longer returns the effective settings as a response. Now, clients receive the effective settings only through the `thread/settings/updated` notification. ## What Changed This updates the TUI to send `thread/settings/update` whenever those thread-scoped settings change and to treat the RPC response as the authoritative acknowledgement. It also routes `thread/settings/updated` notifications back into cached session state and the visible chat widget so active and inactive threads stay in sync after app-server-originated changes. The implementation is kept to the TUI layer: settings conversion and merge logic live under `codex-rs/tui/src/app/thread_settings.rs`, with dispatch/routing hooks in the existing app and chat widget paths. ## Verification I manually tested using `codex app-server --listen unix://` and then launching two copies of the TUI that use the same local app server. I then resumed the same thread on both and verified that changes like plan mode, fast mode, model, reasoning effort, etc. are reflected "live" in the second client when modified in the first and vice versa.
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.
