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  [Cart AJAX API] Discounts support on /cart/update.js - Shopify developer
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  Shopify’s developer changelog documents all changes to Shopify’s platform.
  Find the latest news and learn about new platform opportunities.
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May 21, 2025

# \[Cart AJAX API] Discounts support on `/cart/update.js`

DateMay 21, 2025

FlagsNew

SurfacesAPI

We have added support for discounts in the Cart AJAX API's `/cart/update.js` endpoint. You can now [add or remove discounts from your cart](https://shopify.dev/docs/api/ajax/reference/cart#update-discounts-in-the-cart) using the `discount` parameter.

Learn more about cart discount support on [shopify.dev](https://shopify.dev/docs/api/ajax/reference/cart#update-the-cart-discounts).