Anatomy: an open-source Claude Code skill that turns technical ideas into interactive isometric machine figures

Anatomy is an MIT-licensed Agent Skill for Claude Code that explains a technical idea by having Claude invent a physical machine whose working is the concept (e.g. a cache key as a pin-tumbler lock), then build it from dozens of shaded isometric parts with a framed card, live readout and calm pointer/keyboard motion. Output comes as SVG (standalone HTML, a single .svg, or React/Next.js components), SVG plus in-camera WebGL shaders for fire, water and caustics, or a beta 3D mode. The kit has zero dependencies beyond Node built-ins (Node 20.10+). Quality is enforced by a geometry audit that proves nothing intersects and every end is mounted, plus headless-Chrome capture, contact-sheet and line-end checks that Claude is told to inspect. Author-reported figures: small 3D figures run at 60 fps, a 380-part stress test about 20 fps, and a full 3D orbit audit of 30 parts takes 15–20 minutes. It is not a chart library and does not draw people or exact maps. Install with npx skills add wheresryan22/anatomy -g -a claude-code, then run /anatomy <idea> in Claude Code. The repo was created Oct 8, 2026, shipped v1.0.0 on Oct 10, and has roughly 1,970 stars.