> For clean Markdown of any page, append .md to the page URL. > For a complete documentation index, see https://docs.bigcommerce.com/developer/learn/courses/graphql-storefront-api/checkout/llms.txt. > For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.bigcommerce.com/_mcp/server. # Module 6: Cart and Checkout > Build amazing commerce solutions powered by the BigCommerce platform ## Docs - [Cart and Checkout](https://docs.bigcommerce.com/developer/learn/courses/graphql-storefront-api/checkout/cart-checkout.md) - [Lab - Query Practice](https://docs.bigcommerce.com/developer/learn/courses/graphql-storefront-api/checkout/lab-query-practice.md) - [Lab - Create a Cart and Checkout Flow in Postman](https://docs.bigcommerce.com/developer/learn/courses/graphql-storefront-api/checkout/lab-checkout-flow.md) - [Optional Lab - Complete Checkout Flow with Payment](https://docs.bigcommerce.com/developer/learn/courses/graphql-storefront-api/checkout/lab-payment.md)