---
title: Extension points APIs
description: Learn about the APIs provided to extension points.
api_name: product-subscription-extensions
source_url:
  html: 'https://shopify.dev/docs/api/product-subscription-extensions/api'
  md: 'https://shopify.dev/docs/api/product-subscription-extensions/api.md'
---

# Extension points APIs

Deprecated

Product subscription app extensions won't be supported as of February 9, 2026. You should migrate existing product subscription app extensions to [purchase options extensions](https://shopify.dev/docs/apps/build/purchase-options/purchase-options-extensions).

Learn about the APIs provided to extension points:

* **[LayoutApi](https://shopify.dev/docs/api/product-subscription-extensions/api/layoutapi)**: Adjust your content based on the user's screen size.
* **[LocaleApi](https://shopify.dev/docs/api/product-subscription-extensions/api/localeapi)**: Access a merchant’s current locale to internationalize your extension content.
* **[SessionTokenApi](https://shopify.dev/docs/api/product-subscription-extensions/api/sessiontokenapi)**: Get a fresh session token for communication with your app's backend service.
* **[ToastApi](https://shopify.dev/docs/api/product-subscription-extensions/api/toastapi)**: Provide quick, at-a-glance feedback on the outcome of an action.

***