> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.bigcommerce.com/developer/api-reference/rest/storefront/checkouts/cart-items/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.bigcommerce.com/_mcp/server.

# Cart Items

> Build amazing commerce solutions powered by the BigCommerce platform


## API Docs

- Cart Items [Update Line Item](https://docs.bigcommerce.com/developer/api-reference/rest/storefront/checkouts/cart-items/update-checkout-line-item.md)
- Cart Items [Delete Line Item](https://docs.bigcommerce.com/developer/api-reference/rest/storefront/checkouts/cart-items/delete-checkout-line-item.md)

## OpenAPI Specification

The raw OpenAPI 3.1 specification for this API is available at:
- [OpenAPI JSON](https://docs.bigcommerce.com/developer/api-reference/rest/storefront/checkouts/cart-items/openapi.json)
- [OpenAPI YAML](https://docs.bigcommerce.com/developer/api-reference/rest/storefront/checkouts/cart-items/openapi.yaml)