citation_check

io.agentsvc/services · Verify this server

Verify references before you publish or rely on them: up to 10 citations per call, as reference strings in any style, DOIs, or {title, authors, year, doi}. For each: status verified, mismatch (the work exists but authors, year or DOI are wrong, e.g. a real DOI that points to a different paper), uncertain or not_found (likely invented), the matched record with authors, year, venue, DOI and open-access link, the corrected issues, an APA-formatted reference, and a retraction flag with the notice date from Retraction Watch. Built for agents that write reports, papers or answers with sources. Sources: Crossref, OpenAlex, DataCite. Price: $0.005 USDC per call, paid inside this MCP call via x402 (USDC on Base, Solana, Polygon or Arbitrum). x402 MCP clients such as @x402/mcp pay automatically. Free sample: call with the example input {"citations":["Kahneman D, Tversky A. Prospect theory: An analysis of decision under risk. Econometrica 1979.","Wakefield AJ et al. Ileal-lymphoid-nodular hyperplasia, non-specific colitis, and pervasive developmental disorder in children. Lancet 1998.","doi:10.9999/fake.2020.12345"]}.