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Search research fields and topics by name. Returns results[] with id, display_name, level, description, works_count, and cited_by_count for each concept

{results: [{id, display_name, level, description, works_count}]}

Search 250M+ scholarly papers by keyword. Returns meta (total count) and results[] each with id, title, publication_year, doi, cited_by_count, and authorships

{meta: {count}, results: [{id, title, publication_year, cited_by_count, authorships}]}