Felipe Coury
e5d022297d
## Why On native Windows, running `/mcp` can leak `taskkill`'s normal `SUCCESS:` messages into the Codex TUI while the temporary MCP inventory process tree is being torn down. That corrupts the screen even though MCP itself is working correctly. Fixes #20845. ## What Changed - Redirect the Windows-only MCP teardown `taskkill` subprocess to null stdio so its console output cannot reach the TUI. ## How to Test 1. On native Windows, configure a stdio MCP server, for example: ```powershell codex mcp add sequential-thinking -- npx -y @modelcontextprotocol/server-sequential-thinking ``` 2. With the latest released Codex CLI, start Codex and run `/mcp`. 3. Confirm the current behavior: `taskkill` `SUCCESS:` lines appear in the TUI during the MCP refresh. 4. Switch to this branch's build, start Codex again, and run `/mcp`. 5. Confirm the MCP inventory still renders normally and the `taskkill` lines no longer appear. 6. Repeat `/mcp` once more on this branch to verify the regression does not recur on repeated inventory requests. Targeted tests: - `cargo test -p codex-rmcp-client` - `cargo test -p codex-rmcp-client --test process_group_cleanup --quiet`
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.