# Particles

> A 3D interactive particle field rendered with three.js that reacts to mouse movement and supports customizable color, count, and size.

- Author: [ScrollX UI](https://21st.dev/@scrollxui)
- Library: ScrollX UI
- License: no-license
- Tags: Animation, Background, 3D, Three.js, Particle
- npm dependencies: three
- Live preview: https://21st.dev/@scrollxui/components/particles

## Install

```bash
npx shadcn@latest add "https://21st.dev/r/scrollxui/particles?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/animation.md