Reference checker

Paste a reference list. Each reference is checked against Crossref and PubMed: retracted, identifiers that point to another paper, or not found, with the evidence.

Reference list

or

Code settles what it can: it looks up each DOI and PubMed ID and compares titles. A model investigates only the references the code can't settle, and whatever it can't settle is shown as unsettled. Not found is not the same as fake: books, reports and web pages are often missing from both databases.

The same three tools are open to any MCP client at /mcp. Source on GitHub.