Michael Bolin
93380a6fac
Recently, I merged a number of PRs to increase startup timeouts for scripts that ran under PowerShell, but in the failure for `suite::codex_tool::test_shell_command_approval_triggers_elicitation`, I found this in the error logs when running on Bazel with BuildBuddy: ``` [mcp stderr] 2026-04-02T19:54:10.758951Z ERROR codex_core::tools::router: error=Exit code: 1 [mcp stderr] Wall time: 0.2 seconds [mcp stderr] Output: [mcp stderr] 'New-Item' is not recognized as an internal or external command, [mcp stderr] operable program or batch file. [mcp stderr] ``` This error implies that the command was run under `cmd.exe` instead of `pwsh.exe`. Under GitHub Actions, I suspect that the `%PATH%` that is passed to our Bazel builder is scrubbed such that our tests cannot find PowerShell where GitHub installs it. Having these explicit fallback paths should help. While we could enable these only for tests, I don't see any harm in keeping them in production, as well.
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, Team, 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.