Shopify Dev
Checkout MCP and Cart MCP now support UCP buyer consent (opens in a new tab)
MCP now supports UCP buyer consent extension for consistent privacy choices across cart and checkout.
Shopify Dev· Oct 16, 2026· 8/10
From the article
Checkout MCP and Cart MCP now support the UCP buyer consent extension ( dev.ucp.shopping.buyer_consent ) starting with UCP 2026-08-25 . Buyers can now make the same privacy and marketing choices in your agent that they'd make in a shop's own checkout, like opting in to email or SMS. Shops receive those choices with the cart, checkout, and order. What changed Storefronts now list dev.ucp.shopping.buyer_consent in their discovery profiles at /.well-known/ucp . This extension applies to both cart…
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