Test Webhooks
- Point your test environment URL at a public inspector such as webhook.site or a tunnel like ngrok.
- Trigger a real test-mode event (create a test parcel or advance tracking).
- 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
2xximmediately and process asynchronously.