# Splash Cursor · Pro

Ink splashes on a canvas: soft blobs spawn along the pointer's path carrying its velocity, then slow, spread and fade like dye in water, and clicks burst a ring of them. Not a fluid simulation, so it idles for free.

This is a Charcoal UI Pro component. Its source and examples are available with a Pro seat: https://charcoalui.com/pricing

## With a Pro seat

1. Add the registry to components.json:

```json
{
  "registries": {
    "@charcoal": {
      "url": "https://charcoalui.com/r/{name}.json",
      "headers": {
        "Authorization": "Bearer ${CHARCOAL_LICENSE_KEY}"
      }
    }
  }
}
```

2. Copy your licence key from https://charcoalui.com/dashboard and put it in .env.local as CHARCOAL_LICENSE_KEY, then:

```bash
npx shadcn@latest add @charcoal/splash-cursor
```

To read Pro source through this MCP server, reconnect it with the header "Authorization: Bearer <licence key>".

## API — Splash Cursor
| Prop | Type | Default | Notes |
| --- | --- | --- | --- |
| `children` | `ReactNode` | — |  |
| `color` | `string` | `"var(--ember)"` |  |
| `size` | `number` | `36` | Radius of a fresh blob in px; it grows as it fades. |
| `fade` | `number` | `1.4` | Seconds a blob takes to fade out. |
| `splashOnClick` | `boolean` | `true` | Burst a ring of blobs on click. |
| `className` | `string` | — |  |

See it live: https://charcoalui.com/docs/components/splash-cursor