> 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/checkout-orders-rest-api/checkout-labs/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.bigcommerce.com/_mcp/server.

# Module 3: Checkout and Payment Labs

> Build amazing commerce solutions powered by the BigCommerce platform

## Docs

- [Cart API - Hands-on Lab](https://docs.bigcommerce.com/developer/learn/courses/checkout-orders-rest-api/checkout-labs/lab-cart.md)
- [Checkout API - Hands-on Lab](https://docs.bigcommerce.com/developer/learn/courses/checkout-orders-rest-api/checkout-labs/lab-checkout.md)
- [Payments API - Hands-on Lab](https://docs.bigcommerce.com/developer/learn/courses/checkout-orders-rest-api/checkout-labs/lab-payments.md)