Storefront MCP cart tools are being deprecated in favour of UCP Cart MCP
DeprecationUnverifiedAdded Sep 24, 2026
What's changing The cart tools on the Storefront MCP server are being deprecated in favour of the UCP-conforming Cart MCP tools: get_cart and update_cart on https://{shop}.myshopify.com/api/mcp are deprecated.
Topics: AI agents, MCP, Developer tools
More Shopify developer platform releases
Every Shopify developer platform release| Date | Release | Type |
|---|---|---|
| Jun 23 | `DraftOrderDiscountNotAppliedWarning.priceRule` removed in GraphQL Admin API 2026-10unverified Pricing | Pricing |
| Jun 26 | Carrier services will no longer be automatically added to the default shipping profileunverified Update | Update |
| Jun 27 | Payment mandates now expose an id fieldunverified Update | Update |
| Jun 19 | Removal of ITEM_NOT_STOCKED_AT_LOCATION errorunverified Update | Update |
| Jun 30 | Hydrogen now deploys to Vercelunverified Preview | Preview |
| Jun 30 | Configure order attribution for sales channel appsunverified Update | Update |
| Jun 18 | Flow action extensions now support relative paths for endpoint URLsunverified Update | Update |
| Jul 1 | Shop Minis May June 2026 updateunverified Update | Update |
Also shipped on Jun 24, 2026
Shopify in June 2026
Sources: each vendor's own release notes, changelogs and GitHub releases, read daily to monthly by how often it posts. Logos via logo.dev; trademarks belong to their owners.