curl -X POST "https://api.chatgrid.ai/v1/boards/{boardId}/nodes" \
  -H "Authorization: Bearer cgk_live_..." \
  -H "Content-Type: application/json" \
  -d '{
    "type": "youtube",
    "position": { "x": 0, "y": 0 },
    "data": {
      "url": "https://www.youtube.com/watch?v=dQw4w9WgXcQ",
      "label": "Rick Astley - Never Gonna Give You Up"
    }
  }'

{
  "object": "node",
  "data": {
    "id": "e5f6a7b8-c9d0-1234-efab-345678901234",
    "node_type": "youtube",
    "position_x": 0,
    "position_y": 0,
    "node_data": {
      "url": "https://www.youtube.com/watch?v=dQw4w9WgXcQ",
      "label": "Rick Astley - Never Gonna Give You Up"
    },
    "parent_node_id": null,
    "created_at": "2026-03-15T10:31:00.000Z",
    "updated_at": "2026-03-15T10:31:00.000Z"
  }
}