This pipeline retrieves the possible filters, for a specific category or searchPhrase. Only one of both filter methods can be used at once.
the categoryId, but only “flat”, it will not “dive into” subcategories
a search phrase to search for, not compatible with categoryId, use a category-filter, if you want to search inside categories
The key is the filterId or name of filter, like categories, manufacturer or other attributes/options/properties like “Größe”. The value has to be an object with a values key, that holds an array of strings (the “id” from the filters-endpoint) or minimum and/or maximum integer values. If the filters object (from the filters-endpoint) delivers a source too, you have to send it too. For categories you have to give the content of the id property, which is the name/path of the category, not the category id itself.