Crossref DOI Metadata Search
Under maintenancePricing
Pay per usage
Search Crossref scholarly works or resolve DOI metadata into clean structured records, including titles, authors, publishers, dates, types, citations, licenses, and canonical URLs. Uses the public Crossref API with no API key required.
Free-text work search across Crossref's metadata index. Leave empty when supplying DOIs.
List of DOIs to resolve directly via the Crossref /works/{doi} endpoint. Leave empty when supplying a search query.
Maximum number of works to emit from a search. Crossref caps rows at 500.
Pagination offset (0-indexed) for search mode. Default 0.
Inclusive lower bound on published date for search mode (Crossref filter syntax: from-pub-date).
Inclusive upper bound on published date for search mode (Crossref filter syntax: until-pub-date).
Restrict to specific Crossref work types (e.g. journal-article, book-chapter, proceedings-article). Applied as a comma-joined filter=type:... clause.
