OpenAI Releases Codex Plugin for Claude Code, Allowing Users to Invoke Codex from Within Claude Code for Code Review and Task Delegation

OpenAI has officially released a Codex plugin for Claude Code.

The plugin does not run as a standalone runtime; it integrates with a locally installed Codex CLI or app server and inherits existing Codex authentication and config (e.g., ~/.codex/config.toml).

Usage requires a ChatGPT subscription (including the free tier) or an OpenAI API key; Node.js 18.18+ is required. Install from the Claude Code marketplace and run the provided setup command.

Key capabilities include code review, adversarial review (useful for auth changes, infrastructure scripts, large refactors), and a rescue feature that lets you delegate tasks with specific model selection and inference-strength adjustments.

Tasks are intended to run in the background with commands to check progress, show results, or cancel. A review-gate can block Claude Code exit until Codex review completes and prompt Claude to address issues. Be aware this can rapidly consume API tokens.