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 safety profile is fully covered. The description adds no behavior beyond that — it does not say whether defaults are workspace-scoped, user-scoped, or what they contain — so it contributes little.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.