curl -X GET "https://prospect-api.smartlead.ai/api/v1/search-email-leads/levels?api_key=YOUR_API_KEY"

{
  "success": true,
  "message": "Data retrieved successfully",
  "data": [
    { "id": 1, "level_name": "Entry" },
    { "id": 2, "level_name": "Senior" }
  ],
  "pagination": {
    "limit": 10,
    "offset": 0,
    "page": 1,
    "count": 2
  },
  "search": null
}

{
  "statusCode": 401,
  "success": false,
  "message": "Unauthorized",
  "error": "User not authenticated"
}