curl https://api.sendpilot.ai/v1/campaigns \
  -H "X-API-Key: YOUR_API_KEY"

{
  "data": [
    {
      "id": "clxxx123456",
      "name": "Q1 Tech Founders Outreach",
      "status": "STARTED",
      "totalLeads": 150,
      "createdAt": "2024-02-20T10:00:00.000Z",
      "updatedAt": "2024-02-24T15:30:00.000Z"
    },
    {
      "id": "clxxx789012",
      "name": "SaaS Decision Makers",
      "status": "PAUSED",
      "totalLeads": 75,
      "createdAt": "2024-02-18T09:00:00.000Z",
      "updatedAt": "2024-02-23T12:00:00.000Z"
    }
  ],
  "meta": {
    "total": 2,
    "page": 1,
    "limit": 20,
    "totalPages": 1
  }
}