Get Delivery

Fetch one delivered message by id. See Webhooks.

The delivery provider's attempt index and message store are eventually consistent: a message id can appear in list deliveries before this endpoint (and redeliver) can resolve it — observed up to ~30s+ after the attempt. So a 404 shortly after a delivery is transient — retry with backoff rather than treating it as final.

path idstringrequired

Destination ID (whk_…).

path deliveryIdstringrequired

Message id (msg_…, the id from list deliveries; equals the svix-id header).

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Response example

123456789101112{
  "id": "msg_2aB…",
  "eventType": "sandbox.stopped",
  "eventId": "sb-3f9a…:sandbox.stopped",
  "payload": {
    "type": "sandbox.stopped",
    "sandboxId": "sb-3f9a…",
    "eventId": "sb-3f9a…:sandbox.stopped",
    "event": { "id": "sb-3f9a…:sandbox.stopped", "ts": "2026-06-24T12:00:00Z", "orgId": "org_…", "sandboxId": "sb-3f9a…", "type": "sandbox.stopped", "data": { "reason": "user_requested" } }
  },
  "timestamp": "2026-06-24T12:00:00Z"
}