Claim Checking

What the check measures

The result reports how many of your sentence's content terms were found in the closest passage, for example 6 of 7. That count is the only number shown, and it is a measurement of word overlap. Rivul AI does not report a confidence or a probability, because term overlap does not establish that a claim is true.

A sentence and its own denial share nearly every word. "Statins reduce mortality" and "statins did not reduce mortality" overlap almost completely, so a high term count on its own means nothing about agreement.

Evidence rule

A passage or abstract is used only when it is long enough to be a real excerpt (more than 80 characters). A paper title is never used as evidence, including a long title.

If every cited item lacks extracted text that meets that rule, the result is no match found.

Procedure

1. Step 1: Select the claim sentence in the editor, or place the cursor in that paragraph.
2. Step 2: Click Check on the selection bubble, or open Claims then Check claim. With text selected and focus outside the editor text, ⌘⇧V runs the same check; inside the editor it stays paste without formatting.
3. Step 3: Read the overlap badge, the term count, the explanation, and the quoted passage. Partial term overlap with an explanation that the wording does not agree means the terms matched but the passage negates the claim, reverses its direction, or calls the question open.

Limits

This check does not read for meaning. It catches common phrasings of disagreement, such as "did not", "failed to", "no significant effect", and a reversed direction like increased against decreased, but it will miss disagreement expressed in other ways.

A term match is a prompt to read the passage, never a substitute for reading it. Authors remain responsible for every claim in the manuscript.