What problem does it solve? Getting a trustworthy second opinion on code changes is hard when the same AI that wrote the code also reviews it. This Skill routes your diffs and questions through the OpenAI Codex CLI as an independent outside voice, so reviews and design decisions are challenged by a separate model before you ship. ## Core Features & Use Cases - Independent diff review: Runs codex review as a pass/fail gate on your changes, catching issues the authoring model may have missed. - Adversarial challenge mode: Actively tries to break your code and assumptions, stress-testing logic before release. - Consult with session continuity: Ask Codex anything and keep follow-up context across questions, useful for architecture debates and debugging. - Use Case: Before merging a feature branch, invoke the review mode to get a pass/fail verdict from Codex, then use challenge mode on any risky logic it flags, and finally consult on how to fix the findings. ## Quick Start Ask the agent to run a codex review of the current branch diff and report whether it passes or fails.