How to Verify Shopify Webhooks Correctly (And Stop Getting It Wrong)

Originally published on KolachiTech

I have reviewed a lot of Shopify app codebases. One thing shows up constantly: webhook verification that looks correct but silently fails. The developer gets frustrated, removes the check, ships without it, and ships a vulnerability instead.

This post covers how Shopify webhook verification actually works, the implementation mistakes that trip people up, and what a production-ready setup looks like. I will share working Node.js and Python code you can drop in today.

Why Your Webhook Endpoint Is a Target

Your Shopify webhook URL is just an HTTP endpoint. It does not require authentication to reach. Anyone who knows it can POST to it.