Use /abandoned-carts/{token} on headless storefronts to get the cart_id using the abandoned cart token passed to the storefront when a shopper clicks an abandoned cart email link. Once the cart ID has been retrieved, our application can use it to fetch and display information about the cart to the shopper using the REST Storefront API, the REST Management API, or the GraphQL Storefront API.
GET – https://api.bigcommerce.com/stores/{store_hash}/v3/abandoned-carts/{token}
Returns the cart_id corresponding to the abandoned cart {token} passed in.