The details returned as part of the GET/api/products method in the variations field.

Only available for variable products.

FieldDescription
idThe id of the variation that we use to identify the value. This is what is used as the variation_id when placing an order
skuThe SKU of the variation
priceThe price of the variation
price_currencyThe currency that the price is in for the variation
variation_qtyThe total amount of stock available
variation_stock_statusThe stock status of the variation and if it is in stock or not. Values can be either in_stock or out_of_stock
optionsAn array of the attribute combination used for this variation