Expire a cart to prevent customers from checking out with that url. After a cart is expired, clicking on the cart url will result in an error message.

POST api.getbread.com/carts/:cartId/expire
curl  -u <api-key>:<secret-key> -X POST https://api.getbread.com/carts/b6c8caa2-cfcf-418b-ae72-88ee14e5a190/expire
HTTP 204 on success