Codex Code Review

Overview

To perform thorough, automated code reviews using the OpenAI Codex CLI agent, use this skill. Codex runs locally and can analyze code changes, identify issues, suggest improvements, and provide security/performance insights through non-interactive automation.

⚠️ CRITICAL: When reviewing code that involves dependency versions, latest releases, or current best practices, you MUST use the WebSearch tool to verify information before making any claims. Never assume version numbers or release status - always search first to avoid false positives. See the "Web Search Verification" section for details.

Prerequisites

Ensure Codex CLI is installed and authenticated:

# Install via npm
npm install -g @openai/codex

# Or via Homebrew (macOS)
brew install --cask codex