How to Test Twilio Webhooks with HookCap

How to Test Twilio Webhooks with HookCap Twilio sends webhooks for every significant event in its platform: incoming SMS messages, voice call status changes, delivery receipts, WhatsApp messages, and more. If your app responds to any of these, you need a reliable way to capture and inspect real payloads during development. The core problem is the same as every webhook integration: Twilio needs a public HTTPS URL, but your handler is on localhost. This guide covers using HookCap to solve that during development. What Twilio Webhooks Are Used For Twilio webhooks let your server react to events from the Twilio platform: Webhook type When it fires Incoming SMS A message arrives on your Twilio number SMS Status Callback Delivery status changes (sent, delivered, failed) Incoming voice call Someone calls your Twilio number Call Status Callback A call's state changes (initiated, ringing, answered, completed) WhatsApp messages Incoming WhatsApp messages on your number Verify service events OTP