Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden. It only states the action, but does not disclose potential side effects (e.g., teleport confirmation, whether the action is instant or requires server restart), error cases (e.g., invalid player or invalid coordinates), or any impact on gameplay. Minimal behavioral disclosure for a tool that mutates server state.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.