Codex Plan Review Skill

Send an implementation plan to Codex for critical analysis and validation.

When to Use

Before implementing complex features
When architectural decisions need validation
User wants second opinion on approach
After you generate a non-trivial plan (multi-step or multi-file), unless the user explicitly asks to skip the review
If plan mode is declined or unavailable for non-trivial work, produce a short plan summary and still run this review before implementation
If you are in plan mode and have a plan, run this review before presenting the final plan or asking "Ready to code?"

First, verify we're running in tmux. Run this check: