How to Authenticate and POST to /v1/call Endpoint in Retell AI for Outbound Twilio Calls
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How to Authenticate and POST to /v1/call Endpoint in Retell AI for Outbound Twilio Calls TL;DR Most outbound call integrations fail at authentication or payload validation. Here's what breaks: missing Bearer tokens, malformed E.164 phone numbers, and agent override misconfiguration. This guide shows you how to authenticate against Retell AI's /v1/call endpoint, structure the request payload correctly, and handle Twilio number registration so your outbound calls actually con