Structured data entities are linked (@id). Entities without @id links are disconnected fragments — three statements that happen to sit on one page.
The check reads every JSON-LD entity on a page and looks for @id references between them: the WebPage that is part of the WebSite, the article whose publisher is the Organization, the Organization with one stable @id reused everywhere.
Entities without @id links are disconnected fragments — three statements that happen to sit on one page. Linked, they are one coherent organization with pages, articles and products that an engine can merge across the site.
In the JSON-LD, check that the Organization has an @id (https://yourdomain/#org) and that other entities refer to it with "publisher": {"@id": "…#org"} rather than repeating a name.
Schema & entity check → — free, no signup.
author, publisher, isPartOf, about point at the @id.What the agent does: the agent's Organization block carries a stable @id that every page shares; your templates can point at it.
Part of the 23 checks · group: Brand identity — JSON-LD on the page, entity links (@id, sameAs), Wikidata record, consistent external profiles.
A URL-shaped identifier for an entity, so two mentions of it can be recognised as the same thing. https://yourdomain/#org on every page means one organization, not one per page.
The page check reads your public pages from outside and runs all 22 — free, no signup, no AI engine involved.