Use when starting feature work that needs isolation from current workspace or before executing implementation plans - ensures an isolated workspace exists via native tools or git worktree fallback
| medium | Writes / deletes files |
| medium | Installs packages |
| brainstorming | shadow | work, implementation |
| finishing-a-development-branch | shadow | implementation, work |
| test-driven-development | shadow | feature, implementation |
| xlsx | shadow | exist |
| using-superpowers | shadow | start |
| verification-before-completion | shadow | work |
| subagent-driven-development | overlap | execut, implementation, plan, current |
| executing-plans | overlap | implementation, plan |
If you have both installed, they compete for the same triggers — the top cause of an agent picking the wrong skill.
One command grades every skill in your Claude Code / Codex — safety, token bloat, and conflicts, 100% locally.
npx skillmoo scan
Grade computed 2026-07-13 · rubric static-v1. Efficacy shown only when measured on a labeled model + task suite — never invented.
Add this independent grade to the skill's README — the badge links back to this rating and updates when we re-grade.
[](https://skillmoo.com/skill/using-git-worktrees/)