OpenAI Codex CLI Skill Use OpenAI Codex CLI ( ) for coding tasks including code review, refactoring, bug fixes, CI repairs, and feature implementation. Codex CLI runs locally on your machine with full filesystem access. When to Use - User asks for code changes, refactoring, or implementation - CI/build failures need fixing - Code review before commit/push - Large codebase exploration or explanation - Tasks requiring file editing + command execution - When GPT-5-Codex model strengths are needed (code generation, tool use) Installation & Auth Codex CLI requires ChatGPT Plus/Pro/Business/Enterpr…