Test POST Webhook URL Not Receiving Inbound Call Events
When using the “Talk to Assistant” button in the VAPI dashboard, POST webhooks are successfully sent to my n8n test webhook URL.
However, when I receive an inbound call (while also listening on the test URL in n8n), VAPI doesn’t send the POST webhook events and returns:
Your server rejected
Call ID: 3f67b110-8417-47e6-907d-244057c5a4a3
When: Aug 5, 2025, 01:48
Response I expect to receive: push the event normally
Response I actually received: Your server rejected
However, when I receive an inbound call (while also listening on the test URL in n8n), VAPI doesn’t send the POST webhook events and returns:
Your server rejected
end-of-call-reportCall ID: 3f67b110-8417-47e6-907d-244057c5a4a3
When: Aug 5, 2025, 01:48
Response I expect to receive: push the event normally
Response I actually received: Your server rejected
end-of-call-report