Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety profile is covered. The description adds the behavioral fact that this is a liveness/availability probe, but provides no further context about what 'responding' means or what the response conveys. This is adequate for a trivial no-parameter read-only tool but does not go beyond the minimum.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.