Storefront MCP and UCP Cart MCP: deprecation.
Agentic storefront integrations using Storefront MCP cart tools
- Published
- Jun 24, 2026
- Effective
- Aug 31, 2026
- Deadline precision
- exact
- Evidence
- official changelog
What the app team should do
Move get_cart and update_cart to the UCP endpoint; add required meta fields; use full-state PUT semantics for update_cart
How to plan the migration
Regression-test full cart replacement and idempotent cancellation before endpoint cutover
Suggested planning start: Aug 11, 2026
Verify against Shopify
Source last checked Aug 11, 2026. Patchquarter is independent from Shopify and preserves the official source as the authority.
Open official Shopify source ↗