Storefront Catalog MCP now implements UCP

What’s changing

The following UCP catalog tools in Storefront Catalog are now available:

- `search_catalog`: Search a store's product catalog with filters, pagination, and buyer context
- `lookup_catalog`: Batch lookup products or variants by identifier with inputs correlation
- `get_product`: Retrieve full product details with interactive variant selection, availability signals, and more

Tool calls can be placed against the https://{storedomain}/api/ucp/mcp endpoint.

What you should do

The previous search and lookup tools are deprecated in favor of the above tool names and endpoint, as well as related updates to their request and response shapes to match UCP. The old versions will be maintained until June 15th, 2026, but all documentation will refer to the latest version.

If you’re building with Storefront MCP tools:

• Update tool names to one of the supported tools above.
• Update endpoints to use https://{storedomain}/api/ucp/mcp.
• Consult the update request and response schemas for all tool calls and update your app to match.

See the documentation for Storefront Catalog MCP for more details.