Shopify Storefront MCP cart tools deprecated for UCP Cart MCP deprecation date
Storefront MCP cart tools are being deprecated in favour of UCP Cart MCP.
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- Theme CLI <=3.83 password-protected dev flows stopShutdown
Starting September 23, 2026, Theme commands on Shopify CLI for password protected storefronts will require version 3.84.0 or later .
- Shopify CLI v3.83.x and earlier (password protected storefront theme development)Version sunset
Shopify CLI 3.83.x and earlier stop supporting theme development on password protected storefronts after 2026-09-23.
- Invalid metafield filter queries return errors (API 2026-10)Breaking change
Starting in API version 2026-10, the GraphQL Admin API returns an error when a query filters by a metafield that isn't set up for filtering, instead of silently returning incorrect results.
- ScriptTag REST Admin API POST/PUT and scriptTagCreate/scriptTagUpdate mutationsBreaking change
Script tag create and update mutations and REST POST/PUT will return errors starting 2026-10-01 across all API versions.
- Global Catalog REST API stops serving trafficShutdown
Global Catalog REST API stops serving traffic on November 2, 2026.
- marketCurrencySettingsUpdate mutationShutdown
The marketCurrencySettingsUpdate mutation and related payload and error types are removed in GraphQL Admin API 2027-01.
- automaticDiscounts queryShutdown
The automaticDiscounts query is removed from the GraphQL Admin API in version 2027-01.
- Script tags stop running on storefrontsShutdown
Script tags are deprecated and will stop running on March 1, 2027.