---
api_version: 2025-07
api_name: checkout-ui-extensions
source_url:
  html: 'https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis'
  md: 'https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis.md'
---

# APIs

[Addresses](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/addresses)

[The API for interacting with addresses.](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/addresses)

[Analytics](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/analytics)

[The API for interacting with web pixels.](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/analytics)

[Announcement](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/announcement)

[The API for interacting with the announcement bar.](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/announcement)

[Attributes](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/attributes)

[The API for interacting with cart and checkout attributes.](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/attributes)

[Buyer Identity](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/buyer-identity)

[The API for interacting with the buyer identity.](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/buyer-identity)

[Buyer Journey](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/buyer-journey)

[The API for interacting with the buyer journey.](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/buyer-journey)

[Cart Instructions](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/cart-instructions)

[Instructions used to create the checkout.](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/cart-instructions)

[Cart Lines](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/cart-lines)

[The API for interacting with the cart lines.](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/cart-lines)

[Checkout Token](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/checkout-token)

[The API for interacting with the token of a checkout.](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/checkout-token)

[Cost](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/cost)

[The API for interacting with the cost of a checkout.](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/cost)

[Customer Privacy](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/customer-privacy)

[The API for interacting with a customer's privacy consent.](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/customer-privacy)

[Delivery](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/delivery)

[The APIs for interacting with delivery and shipping options.](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/delivery)

[Discounts](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/discounts)

[The API for interacting with discounts.](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/discounts)

[Extension](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/extension)

[The API for interacting with the metadata of an extension.](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/extension)

[Gift Cards](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/gift-cards)

[The API for interacting with gift cards.](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/gift-cards)

[Localization](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/localization)

[The APIs for localizing your extension.](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/localization)

[Localized Fields](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/localized-fields)

[The API for interacting with localized fields.](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/localized-fields)

[Metafields](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/metafields)

[The API for interacting with metafields.](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/metafields)

[Note](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/note)

[The API for interacting with the note applied to checkout.](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/note)

[Order](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/order)

[The API for interacting with the order confirmation, available on the **Thank You** page.](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/order)

[Payments](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/payments)

[The API for interacting with the payment options.](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/payments)

[Session Token](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/session-token)

[The API for interacting with session tokens.](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/session-token)

[Settings](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/settings)

[The API for interacting with merchant settings.](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/settings)

[Shop](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/shop)

[The API for interacting with shop.](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/shop)

[Storage](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/storage)

[The API for interacting with local storage.](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/storage)

[Storefront API](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/storefront-api)

[Querying the Storefront API.](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/storefront-api)

[UI](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/ui)

[The API for interacting with the extension’s UI.](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/ui)

[use​Api()](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/useapi\(\))

[Returns the full API object that was passed in to your extension when it was created.](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/useapi\(\))

[use​Extension​Api()](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/useextensionapi\(\))

[Returns the full API object that was passed in to your extension when it was created.](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/useextensionapi\(\))

[use​Subscription()](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/usesubscription\(\))

[Subscribes to the special wrapper type that all “changeable” values in the checkout use.](https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/apis/usesubscription\(\))