Test Webhooks

  1. Point your test environment URL at a public inspector such as webhook.site or a tunnel like ngrok.
  2. Trigger a real test-mode event (create a test parcel or advance tracking).
  3. Re-send recent deliveries from API Settings → Webhook deliveries.

Troubleshooting:

  • No deliveries: endpoint not saved for the right environment, or URL/secret missing.
  • 401s: signature computed over parsed JSON instead of raw bytes, or wrong secret.
  • Timeouts: respond 2xx immediately and process asynchronously.