# Electric Border · Pro

A live electric arc runs along a card's edge: a stroked rounded rect displaced by fractal noise that is re-rolled a few times a second, over a soft glow. Pure SVG, so it fits any size without measuring.

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/electric-border
```

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

## API — Electric Border
| Prop | Type | Default | Notes |
| --- | --- | --- | --- |
| `color` | `string` | `"var(--ember)"` | Arc colour. |
| `speed` | `number` | `1` | Jitter rate multiplier. |
| `chaos` | `number` | `0.5` | How far the arc strays from the edge, 0 to 1. |
| `thickness` | `number` | `2` | Stroke width in px. |
| `radius` | `number` | `16` | Corner radius in px. |
| `children` | `ReactNode` | — |  |
| `className` | `string` | — |  |

See it live: https://charcoalui.com/docs/components/electric-border