Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnly, idempotent, openWorld and non-destructive behavior, so the safety profile is fully covered. The description adds that results are ranked and canonicalized, which is useful, but it says nothing about result limits, ranking logic, or behavior on empty/no-match input.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.