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The Universal Commerce Protocol: AI Can Now Build Carts

Published 2026-07-17 · Seller Tales editorial, published by JoyCraft

On last week, Shopify quietly rolled out Gemini.

Here is what actually matters for store owners.

Full disclosure: Seller Tales is published by JoyCraft — when we recommend our own tools below, we say so.

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Why This Matters

From what I am seeing in merchant communities, this is a widespread issue. Copilot broke quietly.

Based on the developer forums, many stores are affected. The reality is that the documentation assumes you are a developer.

The challenge is that Shopify does not surface this clearly. According to Shopify changelog, this is a widespread issue.

  1. I spent most of last week testing
  • I spent days fixing what was happening.
  • Universal Commerce Protocol changed without warning.
  • Here is the thing: Universal Commerce Protocol is already affecting every store.

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    Seller Tales is a publication by JoyCraft. When we link to our own tools, we say so, and some of those links carry tracking parameters.