claudekit / tools / codex-plugin-cc
[ Plugin · Development ]

Codex Plugin for Claude Code

Use Codex from Claude Code to review code or delegate tasks. An OpenAI-published plugin that exposes standard reviews, adversarial reviews, and task delegation as slash commands, plus a Codex subagent and background-job tracking.

openai/codex-plugin-cc ·updated
$ /plugin install codex@openai-codex copy

Published by OpenAI (github.com/openai)

What it does

Working inside one model’s context tends to bake in that model’s blind spots. Getting a second pass from a different vendor — for review or for handing off the hard parts — usually means context-switching out of your editor.

This plugin pulls that flow back into Claude Code: from the same session, you can fire a slash command to request a Codex review, an adversarial review, or a full task handoff to Codex.

Key features

  • Seven slash commands

    /codex:review for a standard review and /codex:adversarial-review for a skeptical, challenging take on design decisions. /codex:rescue hands off work; /codex:status, /codex:result, and /codex:cancel manage background jobs. /codex:setup verifies your install and settings.

  • codex:codex-rescue subagent

    Beyond one-shot commands, work can be delegated as a subagent — a separate Claude run with its own model and effort, with results returned to the main session.

  • Background jobs with progress tracking

    /codex:rescue runs in the background so the main session isn’t blocked. Job state and output flow through the status/result/cancel triplet.

  • Optional review gate via Stop hooks

    Hook into Claude Code’s Stop hook to slot an automatic review in just before tasks finish — useful when you want a pre-PR check that always runs.

  • Branch-based reviews — --base

    Pass --base to scope the review to changes against a specific branch. Pairs naturally with PR-style review flows.

  • Delegates through the local Codex CLI

    No separate runtime — the plugin delegates through the local Codex CLI and Codex app server, reusing existing local auth, config, environment, and MCP setup.

Installation

/plugin marketplace add openai/codex-plugin-cc
/plugin install codex@openai-codex
/reload-plugins
/codex:setup

/codex:setup checks Codex CLI auth and settings. Run it once after install to confirm the connection before relying on the commands.

Prerequisites

  • Node.js 18.18 or later
  • Codex CLI installed locally
  • A ChatGPT subscription (Free tier included) or an OpenAI API key — auth is reused from the Codex CLI

Notes

  • OpenAI-published, not Anthropic-published — the plugin lives in github.com/openai and ships through its own marketplace (openai/codex-plugin-cc). It’s not listed in claude.com/plugins.
  • Apache-2.0 — free for commercial and personal use.
  • Two-vendor cost shape — running both Claude Code (Anthropic) and Codex (OpenAI) splits tokens and billing across providers. Track usage on each platform separately if cost monitoring matters.
  • Auth and config reused from local Codex CLI — no extra API key entry; whatever your local Codex CLI has (auth, config, MCP servers) is what the plugin uses.
  • Active development — daily-ish updates since the March 30, 2026 launch, so the command set may grow.
§ 5

See also

same category · curated
[01]
[Plugin] Andrej Karpathy Skills · A single `CLAUDE.md` file to improve Claude Code behavior, derived from Andrej Karpathy's observations on LLM coding pitfalls.
tool · claudekit.io / tools / andrej-karpathy-skills
[02]
[MCP] Chrome DevTools MCP · An MCP server that lets AI agents control and inspect a live Chrome browser for performance analysis, debugging, and automation.
tool · claudekit.io / tools / chrome-devtools
[03]
[Plugin] Code Review · Automated code review for pull requests using multiple specialized agents with confidence-based scoring to filter false positives.
tool · claudekit.io / tools / code-review
§ 6

Frequently Asked Questions

frequently asked
§ 6.1
What is Codex Plugin for Claude Code?
An OpenAI-published Claude Code plugin (from `github.com/openai`) that lets you ask OpenAI Codex to review code or delegate tasks from inside Claude Code. Announced March 30, 2026.
§ 6.2
Where does it run?
Claude Code. Under the hood it delegates through your local Codex CLI and Codex app server, so the Codex CLI must be installed on the same machine (Node.js 18.18+).
§ 6.3
How do I install it?
Add the marketplace and install: `/plugin marketplace add openai/codex-plugin-cc`, then `/plugin install codex@openai-codex`, followed by `/reload-plugins` and `/codex:setup` to wire things up.
§ 6.4
What slash commands does it add?
Seven — `/codex:review` (standard review), `/codex:adversarial-review` (skeptical review of design decisions), `/codex:rescue` (delegate work), `/codex:status`, `/codex:result`, `/codex:cancel` (background-job management), and `/codex:setup`.
§ 6.5
Do I need an OpenAI account?
Yes. A ChatGPT subscription (including the Free tier) or an OpenAI API key is required. Auth and config are reused from your local Codex CLI.
§ 6.6
What's the license?
Apache-2.0.