Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already provide readOnlyHint=true, destructiveHint=false, idempotentHint=true, and openWorldHint=false, covering safety and idempotency. The description adds value by specifying this is for 'state management' and 'show current memory state,' which implies it's a read-only diagnostic tool. However, it doesn't disclose additional behavioral traits like rate limits, authentication needs, or what 'state' entails (e.g., memory usage, file status). No contradiction with annotations exists.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.