Paste a reference list or a set of DOIs. Each one is resolved against public scholarly records to confirm it exists, flag any retraction, and pull clean metadata and a free full-text link where one exists.
A DOI that fails to resolve is very likely mistyped or fabricated, so this is a strong catch for invented citations. A resolved DOI is confirmed real. Retraction status comes straight from the record's own flag, not a guess.
It cannot judge whether a cited paper actually supports the claim you used it for. It does not see corrections or expressions of concern in every case, so for a high-stakes reference, confirm those on the publisher page too.
Runs entirely in your browser against the public OpenAlex and Crossref records. No sign-in, no data leaves the page except the lookups themselves.