Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already cover the safety profile (readOnly, idempotent, non-destructive, closed-world), yet the description still adds real context: the author-only access restriction and the deliberate design that entries are lightweight summaries rather than full artifacts. It does not mention rate limits or pagination behavior, keeping it just below top marks.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.