Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden of behavioral disclosure. It mentions that the tool can both hide and unhide, implying reversibility, but it does not explain the side effects, the meaning of the 'confirm' parameter, or whether confirmation is required for irreversible actions. This leaves significant ambiguity about the tool's behavior.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.