In short: OpenAI’s official codex-plugin-cc lets you use Codex from inside Claude Code: get your code reviewed or hand a task over to Codex. Claude writes, Codex reviews. The plugin is open source under Apache-2.0.
Requirements
- Account: a ChatGPT subscription (Free included) or an OpenAI API key. Usage counts against your Codex limits.
- Node.js: 18.18 or later. Check with
node -v.
Install (inside Claude Code)
/plugin marketplace add openai/codex-plugin-cc
/plugin install codex@openai-codex
/reload-plugins
/codex:setup/codex:setup checks that Codex is installed and signed in. If Codex is missing, run npm install -g @openai/codex; to sign in, type !codex login in Claude Code.
Commands
/codex:review: read-only review of uncommitted changes or a branch.--base maincompares the branch with main./codex:adversarial-review: a review that challenges design decisions, trade-offs and assumptions./codex:rescue: hands a task to Codex to investigate, fix or continue. Takes--background,--model,--effort./codex:transfer: creates a persistent Codex conversation from the current session./codex:status,/codex:result,/codex:cancel: watch background jobs, get results, stop them.
Suggested flow
- Have Claude write the feature.
- Run
/codex:review. - For important changes, challenge the design with
/codex:adversarial-review. - Have Claude fix what was found.
- When stuck, get a second opinion with
/codex:rescue.
Heads up: /codex:setup --enable-review-gate reviews every response automatically but burns through usage fast. Only turn it on while you’re watching the session.
Free PDF guide
A 3-page guide with setup, every command and examples (in Turkish).
Source: openai/codex-plugin-cc (GitHub). Accurate as of November 14, 2026.
