Find footguns in code that already exists: swappable arguments, silent fallbacks, unguarded deletes, signatures that are easy to misuse. Use when someone asks "what could bite us here", "what is easy to misuse", "poka-yoke this repo", or wants a diff or PR reviewed for ways to get it wrong. Ranks by blast radius. For code not yet written use design; for something that already broke use retro.
Install
npx skills add rainmanjam/poka-yoke --skill auditnpx skills add rainmanjam/poka-yoke --skill audit -a claude-code -gnpx skills add rainmanjam/poka-yoke --skill audit -a codex -ggemini skills install https://github.com/rainmanjam/poka-yoke.git --path plugins/poka-yoke/skills/auditgh skill install rainmanjam/poka-yoke auditgit clone --depth 1 https://github.com/rainmanjam/poka-yoke /tmp/rainmanjam__poka-yoke
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/rainmanjam__poka-yoke/plugins/poka-yoke/skills/audit ~/.claude/skills/audit # Claude Code
cp -R /tmp/rainmanjam__poka-yoke/plugins/poka-yoke/skills/audit ~/.agents/skills/audit # Codex, Cursor, Gemini CLI, Copilot, OpenCode