What it claims to do
Use this skill any time a spreadsheet file is the primary input or output. This means any task where the user wants to: open, read, edit, or fix an existing .xlsx, .xlsm, .csv, or .tsv file (e.g., adding columns, computing formulas, formatt…
What we found · 4
- Trigger is too broadmediumWords like "any" make it fire everywhere and fight other skills for the same task — the #1 cause of conflicts.
- Bloated: high token costmedium~2,864 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.
- Description too longlowThe description is read on every trigger check; overly long ones waste tokens and dilute the signal.
Conflicts with · 8
| pptx | shadow | time, file, input, output, read |
| docx | shadow | want, read, edit, formatt |
| claude-api | shadow | read, open, file |
| shadow | want, read, add | |
| frontend-design | shadow | exist, read |
| skill-creator | shadow | exist, edit |
| verification-before-completion | shadow | output, fix |
| writing-skills | shadow | edit, 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/xlsx/)