Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare destructiveHint=true, readOnlyHint=false, and idempotentHint=true. The description aligns with these and adds context about clearing sensitive data and pairing with remember/recall. However, it does not disclose additional behavioral traits such as behavior when the key does not exist or confirmation of deletion, so it adds moderate value beyond annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.