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 adds context about clearing sensitive data and previously saved memories, but it doesn't disclose additional behavioral traits beyond what annotations convey, such as what happens if the key doesn't exist. It meets the baseline but doesn't exceed it.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.