4 services carry this tag in their source record. Tags come from the provider, not from us — a tag is a claim about what the service does, not proof that it does it well.
Resolve one research paper and fuse its metadata across OpenAlex, Crossref, Unpaywall and Semantic Scholar into a single cited JSON. Give a doi, arxiv, pmid, pmcid, openalex_id or title and get canonical metadata, author...
Paper lookup by DOI, arXiv id, PMID or OpenAlex id - abstract, authors, venue and citations
Resolve one research paper and fuse its metadata across OpenAlex, Crossref, Unpaywall and Semantic Scholar into a single cited JSON. Give a doi, arxiv, pmid, pmcid, openalex_id or title and get canonical metadata, author...
Paid scholar evidence card for a research claim (cycle 217, x402 $0.01) - GET ?query=<CLAIM_OR_TOPIC> OR ?sample=1|2|3 OR POST application/json {query}. KEYLESS arXiv (export.arxiv.org Atom), Crossref (api.crossref.org)...