Review a diff for over-engineering. Finds what to delete: reinvented stdlib, needless deps, speculative abstractions. One line per finding.
Install
npx skills add DietrichGebert/ponytail --skill ponytail-reviewnpx skills add DietrichGebert/ponytail --skill ponytail-review -a claude-code -gnpx skills add DietrichGebert/ponytail --skill ponytail-review -a codex -ggemini skills install https://github.com/DietrichGebert/ponytail.git --path .openclaw/skills/ponytail-reviewgh skill install DietrichGebert/ponytail ponytail-reviewgit clone --depth 1 https://github.com/DietrichGebert/ponytail /tmp/DietrichGebert__ponytail
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/DietrichGebert__ponytail/.openclaw/skills/ponytail-review ~/.claude/skills/ponytail-review # Claude Code
cp -R /tmp/DietrichGebert__ponytail/.openclaw/skills/ponytail-review ~/.agents/skills/ponytail-review # Codex, Cursor, Gemini CLI, Copilot, OpenCode