walmart.com
Add Walmart product to cart
Input
itemId requiredWalmart item id (us_item_id), the trailing number of an /ip/ URL; also returned by search-products.
quantity optionalHow many to add.
Default: 1Output
line requiredThe product's cart line after the add; null if Walmart did not keep it in the cart.
us_item_id requiredItem id actually added (differs when Walmart resolves the page to another variant).
requested_item_id requiredItem id passed by the caller.
subtotal optionalCart subtotal as Walmart displays it, e.g. $7.94.
signed_in optionalTrue for a signed-in account's cart, false for this browser's guest cart.
cart_count optionalTotal quantity across the cart's lines.
