Definition
ClaimReview is a Schema.org structured data type used to mark up fact-checking content. It identifies the claim being reviewed, who made it, the rating or verdict, and the organization providing the fact check. Like other schema-markup types, it gives machines a machine-readable description of what a page asserts.
In AI search, ClaimReview is valuable because answer engines need reliable ways to distinguish verified facts from contested or false claims. Properly marked fact-check content can support source selection, reduce misinformation, and help AI systems cite adjudicated evidence for YMYL topics where the cost of a wrong answer is high.
ClaimReview should be used only when a page genuinely performs fact-checking. It is not a generic trust badge. The markup must match visible page content and should include clear methodology, author or organization information, publication dates, and links to evidence.
For GEO, ClaimReview is part of a broader trust stack: entity-seo signals, author credentials, transparent sourcing, freshness, and structured-content that helps machines understand what was checked and what conclusion was reached.
Examples of ClaimReview
- A health publisher marks up a reviewed claim about supplement efficacy with ClaimReview, including the claim text, rating, reviewer, and evidence sources.
- A newsroom uses ClaimReview on election misinformation pages so search and AI systems can identify the verdict and cite the fact-checking organization.
- A financial education site avoids ClaimReview on opinion pieces because the pages do not adjudicate a specific factual claim.
- A GEO team validates ClaimReview markup after an AI answer continues citing an outdated false statistic.
