Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The description adds the workflow context of switching to a local server, which is useful beyond the annotations. However, it does not disclose details about session invalidation or post-logout behavior. The annotations (idempotentHint: true, destructiveHint: false) already provide a safety profile, so the description adds modest value.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.