Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare destructiveHint=true and idempotentHint=true, so the destructive nature is known. The description adds context about clearing sensitive data and that the memory was previously stored, but does not disclose additional behaviors like irreversibility or error handling. With annotations present, this is acceptable but not rich.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.