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## Why `run_turn` was still hand-building hook payloads and lifecycle events for a couple of hook paths. Most hook call sites already delegate request construction and event emission to `hook_runtime`, which keeps turn orchestration focused on model-flow decisions rather than hook plumbing. This also keeps the legacy `after_agent` message extraction next to the legacy hook dispatch instead of leaving response-item walking in `run_turn`. ## What changed - Added `run_stop_hooks` in `hook_runtime` to build `StopRequest`, emit preview start events, run the hook, and emit completion events. - Added `run_legacy_after_agent_hook` in `hook_runtime` to build and dispatch the legacy `AfterAgent` hook payload, including extracting input messages from response items. - Updated `run_turn` to call the hook runtime helpers and keep only the resulting continuation/block/stop decisions inline. - Removed the repeated pending session-start hook check from the run loop. ## Validation - `cargo test -p codex-core hook_runtime`
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.