After Aug 31, will the deprecated Storefront MCP cart tools stop responding, or just be unsupported?

Agentic Commerce
1

The changelog says get_cart and update_cart on https://{shop}.myshopify.com/api/mcp are “maintained until August 31, 2026” and after that “will no longer be supported.”

Could someone from Shopify clarify which of these is meant?

  1. The tools are removed from tools/list and calls start failing on/after Aug 31.
  2. The tools keep working as-is, but receive no fixes and can break without notice.

This changes whether migration is a hard deadline or a best-effort one for us.

In our setup we do store MCP request information and call them later on, opposite to what usual chat screens are doing. They do refetch available tools every time a new session being opened. Since we do also map request payload and response payload, the migration path is not always easy. That’s why I’m looking whether these two tools will not be served at all or still being served but not actively maintained.

2

Hey @Faruk - the tool are intended to be removed. They may not go away right away, but it is our intent to remove them around the August 31st deprecation date. Hope this helps a bit, I understand it’s not ideal, so please let me know if I can help with anything else on our end here.