curl "https://server.smartlead.ai/api/v1/lead-list/500?api_key=YOUR_KEY"

{
  "ok": true,
  "data": {
    "id": 500,
    "name": "Q1 2025 Enterprise Prospects",
    "lead_count": 1250,
    "created_at": "2025-12-01T10:00:00.000Z",
    "updated_at": "2025-12-10T16:30:00.000Z"
  }
}

{
  "message": "Invalid API Key"
}