codex-plugin-cc: Use Codex from Claude Code

Overview

Codex plugin for Claude Code brings Codex reviews and delegated coding tasks into Claude Code. It addresses the friction of switching tools by using the Codex CLI and app server already installed on the same machine.

It is useful when you want an independent, read-only review or need Codex to investigate or work on a task. Background jobs, status and result commands, and session transfer help manage longer tasks without leaving Claude Code.

Key Features

• Run read-only reviews of uncommitted changes or a branch against a base ref.
• Request steerable reviews focused on design decisions, risks, and alternatives.
• Delegate investigations and attempted fixes to Codex through a Claude Code subagent.
• Run supported reviews and delegated tasks in the background, then check status or retrieve results.
• Transfer a Claude Code session into a persistent Codex thread.
• Reuse the local Codex CLI installation, authentication, configuration, and environment.
• Optionally enable a review gate that can block Claude Code from stopping when a targeted review finds issues.

Use Cases

• A developer wants a second, read-only review of local changes before shipping, without switching to the Codex interface.
• A team member wants Codex to investigate a failing test or CI build while continuing other work in Claude Code.
• A developer is making a consequential design choice and wants a review that challenges assumptions and tradeoffs.
• Someone starts debugging in Claude Code but wants to continue the same session directly in Codex.

Getting Started

In Claude Code, add the marketplace and install the plugin:

/plugin marketplace add openai/codex-plugin-cc
/plugin install codex@openai-codex

Reload plugins, then run /codex:setup. Requires Node.js 18.18 or later and a ChatGPT subscription or OpenAI API key. See the README for setup details and command options.

Alternatives

• deliberation: Deliberation routes questions and plans to external models for second opinions, rather than connecting Claude Code to a local Codex CLI for reviews and delegated tasks.
• multica: Multica coordinates agent work around issues in a self-hosted team workspace, rather than adding Codex review and delegation controls to a Claude Code session.

Considerations

• This is an integration, not a separate Codex runtime. Codex must be installed and authenticated locally; its existing configuration and usage limits apply.
• The plugin requires Node.js 18.18 or later, plus a ChatGPT subscription or OpenAI API key.
• Delegated work and multi-file reviews can take a while. Background execution is available, but completion still depends on the local Codex environment.
• The optional review gate can create long-running Claude/Codex loops and consume usage quickly, so it should be monitored when enabled.