How to Test Twilio Webhooks Locally

Short summary

This tutorial walks through testing Twilio webhooks against a local development environment using Express, signature verification, and HTTP tunneling. It compares ngrok's unstable free-tier URLs with Anonymily's persistent endpoints, then covers Twilio Console configuration and common debugging pitfalls like HMAC-SHA1 signature mismatches. The guide includes ready-to-run Node.js code for SMS and call-status handlers.

• •Build an Express server with Twilio signature verification middleware
• •Expose localhost via ngrok or Anonymily for stable public webhook URLs
• •Configure Twilio Console webhooks and debug 403 signature validation errors

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