curl "https://api.tracklysms.com/api/v2/webhooks/66b0f7c84a1d4b2e9c3a1f2e/deliveries?state=dead" \
  -H "X-Api-Key: trk_your_api_key"

{
  "deliveries": [
    {
      "id": "66d1a8d95b2e4c3f0d4b2e6f",
      "endpointId": "66b0f7c84a1d4b2e9c3a1f2e",
      "accountId": 1042,
      "eventId": "b2e0f7c8-4a1d-4b2e-9c3a-1f2e3d4c5b6a",
      "eventType": "message.delivered",
      "attemptCount": 6,
      "state": "dead",
      "statusCode": 500,
      "latencyMs": 143,
      "responseBodyPreview": "Internal Server Error",
      "lastError": "HTTP 500",
      "nextRetryAt": null,
      "createdAt": "2026-07-26T14:03:11Z",
      "updatedAt": "2026-07-26T18:03:11Z"
    }
  ],
  "page": 1,
  "perPage": 25,
  "total": 1
}