Dylan Tarre built this as a reference for Disney's 12 principles of animation, structured so you can use it whether you're starting out or working at an advanced level. Each principle gets a core concept, beginner application, advanced technique, and key insight. It's handy when you're implementing motion design or animations and need to quickly check what makes something feel right versus mechanical. The format is clean and you can scan it fast during actual work. With 42 stars on GitHub, it seems to have found an audience among developers doing animation work who want the fundamentals without digging through full textbooks.
npx skills add https://github.com/dylantarre/animation-principles --skill animation-principles---universal-reference