get https://externalapi.retailrocket.net/api/3.0/productRecommendations/relatedWithoutCurrentCategory
The algorithm returns products associated with the product page that are likely to be purchased together with the product to which the recommendations refer. Products which belong to the same category as a viewed product are removed from related products.
Link
linkconsists of a name and a value, in the query string the name and value are separated by a comma, example: link=card,12345, where card is the name and 12345 is the value.