June 24, 2026 Action / breaking change

Storefront MCP cart tools are being deprecated in favour of UCP Cart MCP

Action RequiredAPIDeprecation announcement

Shopify developer change

MerchantDiff detected this entry in Shopify's official developer changelog on June 24, 2026.

This Shopify update is categorized as Action Required, API, Deprecation announcement.

Use the official Shopify entry below as the source of truth for technical implementation details, affected APIs, migration instructions and deadlines.

Official source

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