known·good search mcp servers how we grade about the index

search / request a probe

Request a probe

Not in the index yet? Ask us to check. We fetch the site the way an agent does, test the five signals on the rubric, and list it if it passes — with the date. The probe decides, not the request: placement cannot be bought or asked for, only earned.

What happens next

You get an email either way. A pass means a dated listing at /site/{host}, re-probed on schedule. A fail means the reasons, in plain language, and nothing published. Sites that declare ai-input=no or block KnownGood-Verifier in robots.txt are never probed, even on request — change the declaration first.