What it claims to do
Create new skills, modify and improve existing skills, and measure skill performance. Use when users want to create a skill from scratch, edit, or optimize an existing skill, run evals to test a skill, benchmark skill performance with varia…
What we found · 2
- Bloated: high token costmedium~8,247 tokens on every single call. Compress instructions and trim examples.
- Embedded shell script blockmediumShips runnable command-line scripts. Not necessarily bad, but must be sandboxed and reviewed.
What its scripts can do
| high | Executes code |
| medium | Writes / deletes files |
Conflicts with · 7
| docx | shadow | create, edit |
| xlsx | shadow | exist, edit |
| brainstorming | shadow | modify |
| finishing-a-development-branch | shadow | test |
| systematic-debugging | shadow | test |
| writing-skills | overlap | new, exist, edit |
| frontend-design | overlap | new, exist |
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/skill-creator/)