Search Semantic Scholar for papers by keyword, with year, field-of-study, citation-count and open-access filters. Returns the unified envelope.

Matching is relevance-ranked over title, abstract and venue (matching_mode relevance_ranked); result.total is the API's estimate. Titles are typed by script: kana or Hangul decide ja or ko, Latin goes to en, and a han-only title stays untyped in extra.title. Coverage of non-English humanities work is thin — a ZERO_RESULTS here is weak evidence; consult the CiNii, J-STAGE, NDL and KCI servers.

Look up one paper by S2 ID, DOI, ArXiv ID, or URL. Returns the unified envelope with a single item, or NOT_FOUND.

Look up up to 500 papers at once by ID. Returns the unified envelope; identifiers the API could not resolve are counted in a PARTIAL_NOT_FOUND diagnostic and listed in coverage_note.

Papers citing a given paper (citations) or cited by it (references). Returns the unified envelope. The API reports no total for this endpoint, so result.total is the returned count (TOTAL_NOT_REPORTED).

Search for authors by name. Returns the unified envelope; each item is an author record (record_type author) with affiliations, paper count, citation count and h-index in extra.

Look up one author by Semantic Scholar Author ID. Returns the unified envelope with a single author item, or NOT_FOUND.

Papers by one author, paginated. Returns the unified envelope; result.total is the returned count (TOTAL_NOT_REPORTED).

Papers similar to one seed paper, by Semantic Scholar's recommender. Returns the unified envelope (matching_mode similarity_ranked).

Papers similar to a set of positive seed papers and unlike optional negative ones. Returns the unified envelope (matching_mode similarity_ranked); the seed IDs are in query.params so the receipt fixes them.