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## Why This is the base PR in the split stack for the permissions migration. It isolates stack-safety work that had been mixed into the larger permissions PR, so reviewers can evaluate the async-future changes separately from the permissions model changes in #22267. The main risk this addresses is large or recursive multi-agent futures overflowing smaller runner stacks. A follow-up review also called out that `shutdown_live_agent` must remain quiescent: callers should not remove a live agent from tracking or release its spawn slot until the worker loop has actually terminated. ## What Changed - Boxes the large async futures in the multi-agent spawn, resume, and close tool handlers. - Boxes the `AgentControl` spawn and recursive close/shutdown paths that can otherwise build very deep futures. - Keeps `shutdown_live_agent` waiting for thread termination before removing/releasing the live agent, preserving the previous shutdown ordering while still boxing the recursive close path. ## Verification Strategy The focused local coverage was `cargo test -p codex-core multi_agents`, which exercises the multi-agent spawn/resume/close handlers, cascade close/resume behavior, and the shutdown path touched by this PR. --- [//]: # (BEGIN SAPLING FOOTER) Stack created with [Sapling](https://sapling-scm.com). Best reviewed with [ReviewStack](https://reviewstack.dev/openai/codex/pull/22266). * #22330 * #22329 * #22328 * #22327 * __->__ #22266
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.