Shopify switches off its Global Catalog REST API on 2 November

Shopify switches off its Global Catalog REST API on 2 November

9 October 2026: Shopify's Global Catalog REST API, deprecated in April 2026, stops serving traffic on 2 November 2026. From that day every request to discover.shopifyapps.com/global fails, including requests against saved catalogs, and apps that search or look up products across Shopify merchants through it must have moved to Global Catalog MCP, which implements the Universal Commerce Protocol.

Not yet independently verified. This rests on Shopify's own developer changelog; we found no independent report, and Shopify does not say how many apps still call the REST API. We will update this when it can be confirmed, and remove this note.

Which calls stop working

Shopify's changelog lists four endpoints that go dark:

• GET /global/v2/search
• GET /global/v2/p/{upid}
• GET /global/v2/p/by-variant/{vid}
• POST /global/v2/lookup

Each has a replacement tool on the MCP server at catalog.shopify.com/api/ucp/mcp. Search maps to search_catalog, the two single-product lookups map to get_product, passing a product or variant global ID, and bulk lookup maps to lookup_catalog, which takes up to 50 items per request. Requests must include the agent's profile URL in meta.ucp-agent.profile, saved catalogs are addressed by passing their ID in the request rather than through a dedicated URL, and responses follow the UCP catalog schemas. Authentication does not change.

Shop MCP: the agent-facing side

Four days after the deprecation notice, on 13 October, Shopify published Shop MCP, a single connection at mcp.shop.com with 17 tools for AI agents. It covers search over a catalog Shopify puts at more than a billion products, with no API key needed for search; sign-in with Shop so search uses a shopper's saved sizes and preferences; carts and checkout on Shopify stores, including Shop Pay once the shopper confirms the total; checkout on non-Shopify stores, where the shopper approves the purchase in Shop and the agent receives single-use card details; and order tracking. Shopify says nothing changes for existing Catalog API integrations and no action is needed for Shop MCP itself.

Taken together, the two notices show where Shopify wants product discovery to happen: through MCP servers that AI agents call, rather than a conventional REST API.

What app developers should do now

Teams that built price comparison, product search or affiliate tools on the REST API have under three weeks. The work is mostly mechanical, a change of endpoint, request shape and response schema, but it touches every search and lookup call, so it needs testing against saved catalogs before 2 November rather than on the day.

Shopify in our catalogue

We list Shopify as a company, and our B2B ecommerce platform category lists 10 products.

Related on TrustList:

• curl 8.23.0 fixes 24 flaws, one rated high, and drops SMB support

Sources

• Shopify developer changelog: Global Catalog REST API stops serving traffic on November 2, 2026, 9 October 2026
• Shopify developer changelog: Add shopping and Shop Pay checkout to any agent with Shop MCP, 13 October 2026