Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already provide readOnlyHint, idempotentHint, and destructiveHint=false, indicating safe, non-destructive behavior. The description adds focus on 'stale entries' and 'SaaS exposure' but doesn't disclose caching, rate limits, or error handling. With annotations present, the description provides minimal additional behavioral context.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.