Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true and destructiveHint=false, so the safety profile is covered; the description adds useful behavior beyond that: newest-first ordering and the returned fields (method, headers, query params, body, timestamps). It does not cover retention/expiry or empty-result behavior, but adds real context over the annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.