Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already state readOnlyHint=true and destructiveHint=false, so the safety profile is covered. The description adds behavioral context: it is 'bounded' (paginated), 'newest-first' (ordering), and excludes specific fields (content, embeddings, prompts, org ids, arbitrary metadata). This goes beyond the annotations and clarifies the response scope without contradiction.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.