When your animation feels off but you can't articulate why, this gives you a systematic checklist tied to the 12 principles. It maps symptoms like "floaty" or "stiff" to specific violated principles, then walks through concrete fixes. The diagnostic framework is the real value here: instead of randomly tweaking timing or adding more frames, you isolate whether the problem is missing arcs, poor anticipation, or insufficient squash and stretch. It enforces the discipline of changing one thing at a time so you actually learn what works. Best used when you're stuck tweaking the same scene for hours without improvement.
npx skills add https://github.com/dylantarre/animation-principles --skill problem-diagnosis