How can I display products in the checkout using API or code?

Topic summary

A developer wants to display products that are already in the cart again on the checkout page, similar to showing a product list summary during checkout.

Recommended Solution:

  • Use Shopify’s Checkout UI Extensions to customize the checkout interface
  • Leverage the Cart Lines API to access and display cart items
  • Alternatively, explore Cart Transform functionality

Key Resources Provided:

  • Checkout UI Extensions documentation
  • Cart Lines API reference (2024-01)
  • Extension targets overview
  • Cart Transform API documentation

Status: The question remains open with guidance provided. The responder suggests potentially hiring a Shopify developer to implement the solution, as this requires custom development work using Shopify’s extension APIs.

Summarized with AI on November 13. AI used: claude-sonnet-4-5-20250929.

That is, I want to show again the products that are inside the cart. Something like this…