What changed in the Shopify API

Shopify storefronts now support UCP 2026-08-25

Shopify storefronts now support UCP 2026-08-25

The Polaris CDN is adopting semantic versioning

Polaris CDN 1.1 release candidate
The Polaris CDN is adopting semantic versioning

More resilient refreshes for expiring offline access tokens

More resilient refreshes for expiring offline access tokens

Password Protected Shop Dev flows on Shopify Theme CLI v3.83.x and older to be deprecated

Password Protected Shop Dev flows on Shopify Theme CLI v3.83.x and older to be deprecated
Build Shopify apps in PHP and Python with new official packages
Oxygen is now available on trial plan stores

Four additional topics are now available for Events

Four additional topics are now available for Events
GitHub commits now name the last theme editor

Script tags are deprecated and will stop running on March 1, 2027

Script tags are deprecated and will stop running on March 1, 2027

Shopify Analytics is now a full-stack platform for apps. Model, query, embed, and enrich analytics on Shopify without managing your own data infrastructure.

Full-stack capabilities to power app analytics
Shopify Analytics is now a full-stack platform for apps. Model, query, embed, and enrich analytics on Shopify without managing your own data infrastructure.

Checkout And Accounts Configuration API for unified branding across checkout, customer accounts, and sign-in

Checkout And Accounts Configuration API for unified branding across checkout, customer accounts, and sign-in

Hydrogen developer preview update: August 18, 2026

 now open as a full-page navigation
Hydrogen developer preview update: August 18, 2026

Updating an order's shipping address recalculates taxes as of API version 2026-10

Updating an order's shipping address recalculates taxes as of API version 2026-10

Shop Campaigns performance data now available via ShopifyQL

Shop Campaigns performance data now available via ShopifyQL
Draft order and transfer/shipment inventory is moving from reserved to committed
SubscriptionContractCalculation API now available in early access

Standard storefront events and actions now support cart attributes

Standard storefront events and actions now support cart attributes
Updating an order's shipping address now recalculates taxes

WebMCP support for Liquid and Hydrogen storefronts

WebMCP support for Liquid and Hydrogen storefronts

Oxygen is now available on development stores

Oxygen is now available on development stores
 mutation now supports multiple tracking numbers for each fulfillment