Webhook events reference

Every event 4klyft emits, its payload, and delivery guarantees.

Zuletzt aktualisiert · 5. Aug. 2026Integrationen

Webhooks push shipment, route and claim events to your endpoint as they happen. Configure endpoints and select events under Settings → Integrations → Webhooks.

Event payload

json

{
  "event": "shipment.out_for_delivery",
  "shipment_id": "4K-8829-DE",
  "occurred_at": "2026-08-05T08:12:03+02:00",
  "received_at": "2026-08-05T08:12:04+02:00",
  "delivery_id": "dlv_01J9ZK3W",
  "data": { "route": "AMS-2/14", "eta": "2026-08-05T13:40:00+02:00" }
}

Delivery guarantees

At-least-once delivery — duplicates are possible; deduplicate on delivery_id.

Retries with exponential backoff for 24h on non-2xx responses; a response slower than 8 seconds counts as a failure.

Events from offline devices arrive late but ordered, with the original occurred_at.

VorsichtAcknowledge fast and process async. Endpoints that validate against their own database before responding are the top cause of duplicate storms.

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Webhook events reference

Event payload

Delivery guarantees

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