# Spring

> A draggable element connected to its origin by an animated coiled spring line that stretches and snaps back with physics-based motion.

- Author: [unlumen](https://21st.dev/@unlumen)
- Library: Unlumen UI
- License: MIT
- Tags: Physics, Motion, Spring, SVG, Drag
- npm dependencies: motion
- Live preview: https://21st.dev/@unlumen/components/primitives-animate-spring

## Install

```bash
npx shadcn@latest add "https://21st.dev/r/unlumen/primitives-animate-spring?api_key=$API_KEY_21ST"
```

Requires a 21st API key (generate one at https://21st.dev/mcp) passed as `API_KEY_21ST`. Free accounts get a limited number of installs per day; unlimited on a paid plan — see https://21st.dev/pricing.

Full component directory: https://21st.dev/llms.txt · More like this: https://21st.dev/community/components/s/physics.md