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A
mastering-engineer
by bitwize-music-studio/claude-ai-music-skills · view source ↗
MusicCC0-1.03,723 tok/call
Safe, but heavier than average on tokens
Safety grade
A
86/100 · gate: pass
Token cost
3,723
1.8× median
Efficacy
—
Not yet measured
What it claims to do
Guides audio mastering for streaming platforms including loudness optimization and tonal balance. Use when the user has approved tracks and wants to master audio files.
What we found · 3
- Bloated: high token costmedium~3,723 tokens on every single call. Compress instructions and trim examples.
- Monolithic — should use progressive disclosuremediumAll ~3,723 tokens load on EVERY trigger. Anthropic’s skill guidance is a lean SKILL.md that points to detailed `references/` files loaded on demand — move your 38 detail sections out to cut the per-trigger cost ~87%.
- Embedded shell script block — in a warninglowAppears inside a prohibition/warning ("never …"), not as an instruction to run. Flagged for awareness only.
Have you installed mastering-engineer? Scan everything you run.
One command grades every skill in your Claude Code / Codex — safety, token bloat, and conflicts, 100% locally.
npx skillmoo scan
Grade computed 2026-07-18 · rubric skillmoo-static/2.0. Efficacy shown only when measured on a labeled model + task suite — never invented.
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[](https://skillmoo.com/skill/mastering-engineer/)
Independent static analysis by SkillMOO — the Consumer Reports for agent skills. Safety, token, and conflict grades are computed, not opinions. Efficacy is only ever claimed when measured. We rate & link to the source; we do not rehost skill content.