8b95d5467e
## Summary - Propagate Linux bubblewrap argument-construction failures instead of panicking in the helper - Keep mutable-symlink carveouts fail-closed while reporting them as ordinary sandbox build failures - Add regression coverage for a protected `.codex` symlink inside a writable workspace root ## Root cause Linux bubblewrap intentionally rejects read-only carveouts that cross a symlink the sandboxed process can still rewrite. That is the correct security behavior for protected metadata paths such as `.codex`. The bug was one layer higher: `linux_run_main` treated the expected build failure as impossible and panicked while constructing the bubblewrap argv. For issue #20716, that turned a normal fail-closed sandbox outcome into a noisy panic in the transcript. ## User impact Users with a project-local `.codex` symlink inside a writable workspace still get the conservative sandbox decision, but they no longer see a Rust panic for that condition. The helper now exits with the concise sandbox-build error so the normal denial / escalation path can handle it. Fixes #20716
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.