The get_cart and update_cart tools on Shopify's Storefront MCP server reached their August 31 deprecation date. Agents that have not moved to the UCP Cart MCP will try to add items to a cart that no longer answers.
The Additional Scripts field on the Thank you and Order status pages stopped executing for stores on non-Plus plans on August 26. Orders keep flowing, so nothing looks wrong.
Google's Universal Commerce Protocol debuted at NRF in January 2026 and is now default infrastructure, with Walmart live and Shopify on by default. Here's what ecom operators should do.
Shopify's Universal Commerce Protocol is now default on every store. Products are auto-discoverable in ChatGPT and Copilot. Here's what operators should do.