Seed item ID used for item-based recommendations (e.g., complementary).

Any number of filtering criteria used to narrow the result set, such as color=blue or group_id=sandals or price=100-200. Facets, item groups and collection IDs can be used as filters. If filter_value has the form <min>-<max>, it is interpreted as a range. Filters with the same key are ORed together and filters with different keys are ANDed together by default. Only results that match the filters are returned. Boolean values are serialized with the first letter capitalized (e.g., True / False) as a convention.

User segment is a client context value (such as platform, location, etc.) that is used to evaluate redirect or refined tag rules. You can supply multiple segments by passing multiple us arguments.