[2026-01] Storefront & Customer Account API version update (#3434)

* feat: [2026-01] Update Storefront API and Customer Account API
Update Storefront API and Customer Account API from 2025-10 to 2026-01.

This is the quarterly API version update aligned with Shopify's API release schedule.

* run npm install

Author: kdaviduik

.changeset/tidy-cats-dance.md

@@ -0,0 +1,17 @@
+---
+'@shopify/hydrogen': major
+'@shopify/hydrogen-react': major
+'@shopify/cli-hydrogen': patch
+'@shopify/create-hydrogen': patch
+'skeleton': major
+---
+
+Updated to Storefront API 2026-01 and Customer Account API 2026-01.
+
+This is a quarterly API version update aligned with Shopify's API release schedule.
+
+**Action Required**: The `cartDiscountCodesUpdate` mutation now requires the `discountCodes` argument. If you have custom cart discount code logic, verify your mutations include this field.
+
+Review the changelogs for other changes that may affect your storefront:
+- [Storefront API 2026-01 changelog](https://shopify.dev/changelog?filter=api&api_version=2026-01&api_type=storefront-graphql)
+- [Customer Account API 2026-01 changelog](https://shopify.dev/changelog?filter=api&api_version=2026-01&api_type=customer-account-graphql)

package-lock.json

@@ -4,8 +4,8 @@ import {
   customerAccountApiCustomScalars,
 } from './src/codegen.helpers';
 
-const SF_API_VERSION = '2025-10';
-const CA_API_VERSION = '2025-10';
+const SF_API_VERSION = '2026-01';
+const CA_API_VERSION = '2026-01';
 
 const storefrontAPISchema: CodegenConfig['schema'] = {
   [`https://hydrogen-preview.myshopify.com/api/${SF_API_VERSION}/graphql.json`]:

packages/hydrogen-react/codegen.ts

@@ -35,7 +35,7 @@
         "type": "Generic",
         "anchorLink": "authentication",
         "title": "Authentication",
-        "sectionContent": "To use Hydrogen React, you need to authenticate with and make requests to the [Storefront API](/docs/api/storefront). Hydrogen React includes an [API client](/docs/api/hydrogen-react/2025-10/utilities/createstorefrontclient) to securely handle API queries and mutations.\n\nYou can create and manage Storefront API access tokens by installing the [Headless sales channel](https://apps.shopify.com/headless) on your store.\n\nApps have access to [two kinds of tokens](/docs/api/usage/authentication#access-tokens-for-the-storefront-api): a public API token, which can be used in client-side code, and a private API token, which should only be used in server-side contexts and never exposed publicly.",
+        "sectionContent": "To use Hydrogen React, you need to authenticate with and make requests to the [Storefront API](/docs/api/storefront). Hydrogen React includes an [API client](/docs/api/hydrogen-react/2026-01/utilities/createstorefrontclient) to securely handle API queries and mutations.\n\nYou can create and manage Storefront API access tokens by installing the [Headless sales channel](https://apps.shopify.com/headless) on your store.\n\nApps have access to [two kinds of tokens](/docs/api/usage/authentication#access-tokens-for-the-storefront-api): a public API token, which can be used in client-side code, and a private API token, which should only be used in server-side contexts and never exposed publicly.",
         "sectionCard": [
           {
             "subtitle": "Install",

packages/hydrogen-react/customer-account.schema.json

@@ -41,7 +41,7 @@ const data: LandingTemplateSchema = {
       anchorLink: 'authentication',
       title: 'Authentication',
       sectionContent:
-        'To use Hydrogen React, you need to authenticate with and make requests to the [Storefront API](/docs/api/storefront). Hydrogen React includes an [API client](/docs/api/hydrogen-react/2025-10/utilities/createstorefrontclient) to securely handle API queries and mutations.\n\nYou can create and manage Storefront API access tokens by installing the [Headless sales channel](https://apps.shopify.com/headless) on your store.\n\nApps have access to [two kinds of tokens](/docs/api/usage/authentication#access-tokens-for-the-storefront-api): a public API token, which can be used in client-side code, and a private API token, which should only be used in server-side contexts and never exposed publicly.',
+        'To use Hydrogen React, you need to authenticate with and make requests to the [Storefront API](/docs/api/storefront). Hydrogen React includes an [API client](/docs/api/hydrogen-react/2026-01/utilities/createstorefrontclient) to securely handle API queries and mutations.\n\nYou can create and manage Storefront API access tokens by installing the [Headless sales channel](https://apps.shopify.com/headless) on your store.\n\nApps have access to [two kinds of tokens](/docs/api/usage/authentication#access-tokens-for-the-storefront-api): a public API token, which can be used in client-side code, and a private API token, which should only be used in server-side contexts and never exposed publicly.',
       sectionCard: [
         {
           subtitle: 'Install',

packages/hydrogen-react/docs/generated/generated_docs_data.json

@@ -13,7 +13,7 @@ type CartLinePartialDeep = PartialDeep<
 export const CartLineContext = createContext<CartLinePartialDeep | null>(null);
 
 /**
- * The `useCartLine` hook provides access to the [CartLine object](https://shopify.dev/api/storefront/2025-10/objects/cartline) from the Storefront API. It must be a descendent of a `CartProvider` component.
+ * The `useCartLine` hook provides access to the [CartLine object](https://shopify.dev/api/storefront/2026-01/objects/cartline) from the Storefront API. It must be a descendent of a `CartProvider` component.
  */
 export function useCartLine(): CartLinePartialDeep {
   const context = useContext(CartLineContext);

packages/hydrogen-react/docs/generated/generated_static_pages.json

@@ -228,7 +228,7 @@ function CartComponent() {
 const config: ShopifyProviderProps = {
   storeDomain: 'hydrogen-preview.myshopify.com',
   storefrontToken: '3b580e70970c4528da70c98e097c2fa0',
-  storefrontApiVersion: '2025-10',
+  storefrontApiVersion: '2026-01',
   countryIsoCode: 'CA',
   languageIsoCode: 'EN',
 };
@@ -249,7 +249,7 @@ Default.args = {
   numCartLines: 30,
   /** A callback that is invoked when the process to create a cart begins, but before the cart is created in the Storefront API. */
   data: undefined,
-  /** A fragment used to query the Storefront API's [Cart object](https://shopify.dev/api/storefront/2025-10/objects/cart) for all queries and mutations. A default value is used if no argument is provided. */
+  /** A fragment used to query the Storefront API's [Cart object](https://shopify.dev/api/storefront/2026-01/objects/cart) for all queries and mutations. A default value is used if no argument is provided. */
   cartFragment: undefined,
   /** A customer access token that's accessible on the server if there's a customer login. */
   customerAccessToken: undefined,

packages/hydrogen-react/docs/staticPages/hydrogenReact.doc.ts

@@ -88,9 +88,9 @@ type CartProviderProps = {
   onAttributesUpdateComplete?: () => void;
   /** A callback that is invoked when the process to update the cart discount codes completes */
   onDiscountCodesUpdateComplete?: () => void;
-  /** An object with fields that correspond to the Storefront API's [Cart object](https://shopify.dev/api/storefront/2025-10/objects/cart). */
+  /** An object with fields that correspond to the Storefront API's [Cart object](https://shopify.dev/api/storefront/2026-01/objects/cart). */
   data?: PartialDeep<CartType, {recurseIntoArrays: true}>;
-  /** A fragment used to query the Storefront API's [Cart object](https://shopify.dev/api/storefront/2025-10/objects/cart) for all queries and mutations. A default value is used if no argument is provided. */
+  /** A fragment used to query the Storefront API's [Cart object](https://shopify.dev/api/storefront/2026-01/objects/cart) for all queries and mutations. A default value is used if no argument is provided. */
   cartFragment?: string;
   /** A customer access token that's accessible on the server if there's a customer login. */
   customerAccessToken?: CartBuyerIdentityInput['customerAccessToken'];