Codex Plugin Enables AI Code Reviews in Claude Code
OpenAI's official Codex plugin integrates into Claude Code, letting you run CLI commands like 'codex review' and 'adversarial review' with specialized prompts to catch bugs like irreversible deletes in Laravel CRUD apps in 1-3 minutes.
Seamless Installation Unlocks Codex CLI in Claude Code
Clone the official OpenAI Codex plugin repo via Claude Code's plugin marketplace: run plugin marketplace, then install with project scope using the provided command. Reload plugins and run codex setup to authenticate with your ChatGPT/OpenAI subscription—it detects your existing Codex CLI. This setup pipes Codex CLI outputs into Claude Code's UI, showing progress, status (codex status), and results without leaving the editor. Run jobs in background or wait; background avoids blocking but requires manual status checks. Total setup takes under a minute if Codex CLI is pre-installed.
The plugin wraps Codex CLI with custom scripts and prompts, differing from raw CLI use by automating Laravel bootstraps, seed runs, and skepticism-focused reviews—avoid manual equivalents to save time.
Specialized Reviews Catch Real Bugs Faster Than General Scans
On a fresh Laravel project with two CRUDs (categories/posts) built via Claude Code, codex review on uncommitted changes took 2 minutes 36 seconds. It scans 20+ files but found no bugs in this simple case, as it launches app tests like php artisan serve and seeders to validate functionality.
Switch to codex adversarial review for deeper scrutiny: it pressure-tests assumptions with a skeptical prompt questioning everything. On the same project, it identified a high-priority issue in 1 minute 20 seconds—deleting a category irreversibly wipes all posts without confirmation. It also flagged medium issues like non-potent DB seeds (failing on unique constraints or stale data post-seeder runs). These findings emerge because adversarial mode defaults to doubt, unlike generic reviews.
Timeout at 10 minutes cuts long jobs short, finishing with partial results—configure in Claude Code settings if needed.
Why Combine Models: Plugins Beat Switching Tools
Use both Claude Code and Codex since each excels differently; this plugin reviews Claude-generated code mutually. Previously, you'd craft custom prompts or skills; now official integration with 6,000+ GitHub stars provides battle-tested prompts (view source for details like execution modes). OpenAI's newsletter highlights it alongside GPT-4o and plugins, signaling priority. Trade-off: Project-scope install requires per-folder reinstalls; UI mirrors bash outputs transparently but adds no unique analysis beyond prompts.