Look up Open Access status and bibliographic metadata for a single DOI.

Returns the full Unpaywall DOI object: title, authors, publication info, OA status, best OA location (free PDF link if available), and more.

Examples: get_doi(doi="10.1038/nature12373") get_doi(doi="10.1007/s11222-022-10107-2")

Search Unpaywall article titles and return matching DOI objects.

Search terms are whitespace-split and AND-ed by default. Modifiers inside query:

• "quoted phrase" : words must appear as a contiguous phrase

• OR : match either term (replaces default AND)

• -term : exclude titles containing this term

Returns up to 50 results per page, sorted by match score. Each result contains the full DOI object, a numeric score, and an HTML snippet showing where the query matched the title.

Examples: search_articles(query="cell thermometry") search_articles(query='single "cell thermometry"', is_oa=True) search_articles(query="machine learning OR deep learning", is_oa=False, page=2)