Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Beyond the destructive annotation, the description discloses concrete effects: Site Developers and Viewers lose access, workspace Viewers lose access to every workspace site, and users are signed out. It also clarifies the permission boundary that non-owners can only remove themselves.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.