What problem does it solve? Getting a second opinion on code changes usually means waiting for a human reviewer or shipping unreviewed diffs. This Skill routes your code through the OpenAI Codex CLI so an outside model reviews, challenges, or answers questions about your work before you commit. ## Core Features & Use Cases - Independent Diff Review: Runs codex review against your changes with a pass/fail gate, catching issues your primary model may have missed. - Adversarial Challenge Mode: Tries to break your code by attacking assumptions, edge cases, and failure paths. - Consult with Session Continuity: Ask Codex anything and keep follow-up context across questions in the same session. - Use Case: Before merging a branch, invoke a codex review to get a "200 IQ autistic developer" second opinion on the diff, then run challenge mode to stress-test the riskiest logic. ## Quick Start Ask the assistant to run a codex review of the current branch diff and report any blocking issues before shipping.