"Known" matching MCP connectors:

KnownGate is the food verification layer for people and AI agents: it checks food against what must not be in it, or a number it must stay under, and returns evidence-backed verdicts with their sources and read dates. Official registry entry com.knowngate/verify; Streamable HTTP; tools check_item, check_venue, check_plan, register; repo github.com/FocusedCreativity/knowngate; homepage knowngate.com.