Paste a document. You get back mechanical convictions — counts whose members are not named, listings that do not match contents, marker vocabulary that slipped, totals graded above their weakest part, and internal references that resolve to nothing. Locations included. No style advice, no rewriting.
Free: 3 checks per day. Up to 200 KB per document. Your document is checked and discarded — never stored. These checks are pure parsing: no AI model reads your text on this page.
Weakest Mark · a verdict service for machine-made claims.
Need more than three a day? A prepaid pack of the same mechanical checks is
on the pricing page. Packs also run the
grounding pass — we fetch the source your document cites and
compare the claim against what it actually says. It is under development and
we say so; there is a real recorded run
on that page so you can judge it before paying.
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