# Strands · Pro

Hair-like strands rooted along the bottom edge sway in a slow breeze and bend away from the pointer. Verlet chains on a canvas, so they keep their length and spring back naturally.

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/strands
```

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

## API — Strands
| Prop | Type | Default | Notes |
| --- | --- | --- | --- |
| `count` | `number` | `70` | Strands rooted along the bottom edge. |
| `length` | `number` | `140` | Rest length in px; each strand varies a little. |
| `stiffness` | `number` | `0.08` | How hard each strand pulls back to standing: 0.02 (limp) to 0.3 (bristly). |
| `color` | `string` | `"var(--ember)"` | Any CSS colour. |
| `className` | `string` | — |  |

See it live: https://charcoalui.com/docs/components/strands