What Is The SBMM Trust Signals Checker?
The SBMM Trust Signals Checker reads the trust and policy pages your site links to and a bounded sample of its articles, and shows the evidence a first-time reader would find there: the about, contact, privacy, terms and editorial pages, who wrote each sampled article and how that is shown, the dates each one gives in its text and its markup, the sources it links to from its own content, the publisher your markup declares and the profiles it lists.
This is the honest half of what is usually sold as an E-E-A-T audit. E-E-A-T comes from Google's Quality Rater Guidelines, where it describes what human raters are asked to weigh up. It is not a number Google computes, so nothing here produces one, and nothing here says whether a site is trustworthy or an author is an expert. Every line is something that was read, with where it was read.
The checks a person still has to make are listed separately and clearly labelled. Whether the photographs are real, whether the founder actually exists, whether a claim is sourced honestly: none of that can be read from a page, and a tool that scores it anyway is guessing.