This gives you animation principles specifically for loading states, applying Disney's 12 animation rules to spinners, progress bars, and skeleton screens. You get concrete timing recommendations (spinner rotations at 800-1200ms, dot staggers at 100-150ms), easing guidance for different loader types, and CSS implementations for common patterns like bouncing dots with stagger delays and skeleton shimmers. The approach treats loaders as micro-interactions that deserve thoughtful motion design rather than just throwing in a generic spinner. Most useful when you're building a design system or want your loading states to feel polished instead of like an afterthought.
npx skills add https://github.com/dylantarre/animation-principles --skill loaders-spinners