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Filter concepts

You can filter concepts with the filter parameter:
It's best to read about filters before trying these out. It will show you how to combine filters and build an AND, OR, or negation query

/concepts attribute filters

You can filter using these attributes of the Concept object (click each one to view their documentation on the Concept object page):

/concepts convenience filters

These filters aren't attributes of the Concept object, but they're included to address some common use cases:

Value: a search string
This works the same as using the search parameter for Concepts.

Value: a search string
Returns: concepts with a display_name containing the given string; see the search page for details.
In most cases, you should use the search parameter instead of this filter because it uses a better search algorithm.


Value: a Boolean (true or false)
Returns: concepts that have or lack a Wikidata ID, depending on the given value. For now, all concepts in OpenAlex do have Wikidata IDs.