Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare destructiveHint=true and idempotentHint=true. The description adds context about use cases like clearing sensitive data, which goes beyond annotations. However, it does not discuss behavior for non-existent keys or confirm idempotency, though this is minor given the annotation coverage.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.