{
  "success": true,
  "data": { ... },
  "meta": {
    "requestId": "req_abc123",
    "timestamp": "2026-02-10T12:00:00.000Z"
  }
}

{
  "success": true,
  "data": {
    "items": [ ... ],
    "total": 42,
    "page": 1,
    "limit": 20,
    "totalPages": 3
  },
  "meta": {
    "requestId": "req_def456",
    "timestamp": "2026-02-10T12:00:00.000Z"
  }
}

GET /api/instances?page=2&limit=10

{
  "success": false,
  "error": {
    "code": "INSTANCE_NOT_FOUND",
    "message": "Instance with ID abc123 not found",
    "details": {}
  },
  "meta": {
    "requestId": "req_ghi789",
    "timestamp": "2026-02-10T12:00:00.000Z"
  }
}