Shopify's Storefront Catalog MCP has been updated to implement UCP (Unified Catalog Protocol). Three new catalog tools are now available: `search_catalog` for filtered product searches with buyer context, `lookup_catalog` for batch product/variant lookups, and `get_product` for full product details with variant selection. The previous search and lookup tools are deprecated and will be removed on June 15th, 2026. Developers building with Storefront MCP tools must update tool names, endpoints, and request/response schemas to match the new UCP format.
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