# Cart Transform API (Product Bundles) — Developer Preview  — Shopify developer changelog
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## Cart Transform API (Product Bundles) — Developer Preview 

The Cart Transform API is now available in a developer preview. You can use this new Shopify Functions API to create unique product bundle offerings that display directly in the checkout. 

There are two key parts building a product bundle. First, you can determine which specific products can be merged into a bundle. Second, the Cart Transform API can also expand a bundle product into its individual components, making it easier to complete tasks on the backend—like calculating taxes, shipping weights, decrement inventory, and more. 

Learn more about how to use the Cart Transform Function API to build product bundles [here](https://shopify.dev/api/functions/reference/cart-transform)

*Published: February 09, 2023*
Tags: API, New
Link: https://shopify.dev/changelog/cart-transform-api-product-bundles-developer-preview

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