Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint and idempotentHint, and the description adds that the category parameter is enumerated and cannot carry personal information. This is a useful privacy constraint beyond the schema, but the description does not disclose potential rate limits or data freshness details.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.