Codex Code Review Runtime Tools When this skill needs user questions, todo/progress tracking, subagents, or another skill, use the active runtime equivalents in RUNTIME TOOLS.md. Independent cross-model review of code changes. Codex reviews, the active agent fixes code directly, you decide when it's good enough. When to Use - After implementing a feature or fix, before merge - High-stakes code: auth, payments, data mutations, concurrency - Large PRs with 10+ files changed - When you want a genuinely independent perspective (not same-model echo chamber) When to Skip - Trivial changes (typo fix…