Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full burden for behavioral disclosure. It states the action ('logout all sessions') which implies a destructive operation affecting user access, but doesn't mention authentication requirements, side effects, rate limits, or what 'logout' entails compared to 'remove' sessions. This leaves significant behavioral gaps.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.