# Checkout

- [CheckoutSession](/sdk-reference/c-sdk-v3/function-references/pay/checkout/checkoutsession.md)
- [GetSession](/sdk-reference/c-sdk-v3/function-references/pay/checkout/getsession.md)
- [GetLineItems](/sdk-reference/c-sdk-v3/function-references/pay/checkout/getlineitems.md)