This reference contains some useful information about the parameters for Recommendations and Pathways APIs.

Common values

These parameters are mandatory for all Recommendations and Pathways APIs, and should be passed with the same values across all widget types.

Widget-specific Parameters

This table lists which parameters are specific to which widget types, and whether each parameter is required or optional.

	Item Widgets	Category Widgets	Keyword Widgets	Personalization Widgets	Global Widgets
endpoint	Required	Required	Required	Required	Required
widget_id	Required	Required	Required	Required	Required
fields	Optional	Optional	Optional	Optional	Optional
rows	Optional	Optional	Optional	Optional	Optional
filters	Optional	Optional	Optional	Optional	Optional
user_id	Optional	Optional	Optional	Required	Optional
item_ids	Required	N/A	N/A	N/A	N/A
cat_id	N/A	Required	N/A	N/A	N/A
facet	N/A	Optional	Optional	N/A	N/A
query	N/A	N/A	Required	Required	N/A