Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the operation is known to be safe and repeatable. The description adds the filtering-vs-full-fetch behavior and example topics, but does not state matching semantics or result shape; the added behavioral context is modest.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.