codex-review

# OpenAI Codex Code Review Skill Use OpenAI's Codex CLI for specialized code review with GPT-5.2-Codex - trained specifically for detecting bugs, security flaws, and code quality issues. **Sources:** [Codex CLI](https://developers.openai.com/codex/cli/) | [GitHub](https://github.com/openai/codex) | [Code Review Cookbook](https://cookbook.openai.com/examples/codex/build_code_review_with_codex_sdk) --- ## Why Codex for Code Review? | Feature | Benefit | |---------|---------| | **GPT-5.2-Codex** | Specialized training for code review | | **88% detection rate** | Bugs, security flaws, style issues (LiveCodeBench) | | **Structured output** | JSON schema for consistent findings | | **GitHub native** | `@codex review` in PR comments | | **Headless mode** | CI/CD automation without TUI | --- ## Installation ### Prerequisites ```bash # Check Node.js version (requires 22+) node --version # Install Node.js 22 if needed # macOS brew install node@22 # Or via nvm nvm install 22 nvm use 22 ``` ### Install Codex CLI ```bash # Via npm (recommended) npm install -g @openai/codex # Via Homebrew (macOS) brew install --cask codex # Verify installation codex --version ``` ### Authentication **Option 1: ChatGPT Subscription** (Plus, Pro, Team, Edu, Enterprise) ```bash codex # Follow prompts to sign in with ChatGPT account ``` **Option 2: OpenAI API Key** ```bash # Set environment variable export OPENAI_API_KEY=sk-proj-... # Or add to shell profile echo 'export OPENAI_API_KEY=sk-p...