Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, idempotentHint=true, openWorldHint=true, and destructiveHint=false, so the safety profile is fully covered structurally. The description adds a useful detail about the 'say' field containing a ready-to-read summary, which is genuinely beyond the annotations. But it does not explain ordering, pagination, or what an empty result means.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.