Get details for multiple items in one request

Get details for multiple items in one request

Via the API I want to get the prefered vendor for all my items. The way I'm doing this at the moment is

loop over every single item:
  get_request to v1/items/xxxxx

This is veeeery slow! currently I have about 500 items, but there will be more. So I will have issues of too many request per minute.

Is there a way to fetch details for multiple items at once? Or is it possible to use the v1/items endpoint but enrich the response with the prefered_vendor?