Storefront MCP cart tools move to UCP Cart MCP by August 31
Shopify is replacing Storefront MCP get_cart and update_cart with UCP Cart MCP tools and will maintain the deprecated tools only through August 31, 2026.
Read the official Shopify source01 · Source fact
What changed
Shopify is replacing Storefront MCP get_cart and update_cart with UCP Cart MCP tools and will maintain the deprecated tools only through August 31, 2026.
- Published
- Jun 24, 2026
- Effective
- 2026-08-31
- Deadline
- 2026-08-31
02 · Business impact
Who and what may be affected
- Operators
- Agency
- Surfaces
- Storefront Mcp, Ucp Cart Mcp, Cart Integrations
- Impact
- Revenue, Operations
- Settlement categories
- No direct payout category identified
03 · Next action
What to check
Move cart calls to the UCP endpoint, send complete cart state for update_cart, and add the required UCP profile and idempotency metadata.
confirmed source relationshipLast reviewed Jul 14, 2026