import Telnyx from 'telnyx';

const client = new Telnyx({
  apiKey: 'My API Key',
});

const webhookDelivery = await client.webhookDeliveries.retrieve('C9C0797E-901D-4349-A33C-C2C8F31A92C2');

console.log(webhookDelivery.data);

{
  "data": {
    "id": "f5586561-8ff0-4291-a0ac-84fe544797bd",
    "user_id": "0ccc7b54-4df3-4bca-a65a-3da1ecc777f0",
    "record_type": "webhook_delivery",
    "status": "delivered",
    "webhook": {
      "record_type": "event",
      "id": "C9C0797E-901D-4349-A33C-C2C8F31A92C2",
      "event_type": "call_initiated",
      "occurred_at": "2020-08-10T13:02:01.000Z",
      "payload": {
        "useful": "information"
      }
    },
    "started_at": "2020-08-10T14:00:00.000Z",
    "finished_at": "2020-08-10T14:00:05.595Z",
    "attempts": [
      {
        "status": "delivered",
        "started_at": "2020-08-10T14:00:05.364Z",
        "finished_at": "2020-08-10T14:00:05.595Z",
        "http": {
          "request": {
            "url": "https://fallback.example.com/webhooks",
            "headers": [
              "Accept: */*"
            ]
          },
          "response": {
            "status": 200,
            "headers": [
              "Content-Type: text/html"
            ],
            "body": "All good."
          }
        }
      },
      {
        "status": "failed",
        "started_at": "2020-08-10T14:00:05.004Z",
        "finished_at": "2020-08-10T14:00:05.360Z",
        "http": {
          "request": {
            "url": "https://typo.example.com/webhooks",
            "headers": [
              "Accept: */*"
            ]
          },
          "response": {
            "status": 404,
            "headers": [
              "Content-Type: text/html",
              "Pragma: no-cache"
            ],
            "body": "Oops. Not found."
          }
        },
        "errors": [
          {
            "code": "75499",
            "title": "Webhook host returned HTTP 4XX",
            "detail": "The server returned another HTTP 4XX error"
          }
        ]
      }
    ]
  }
}