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 only says 'Query,' which implies a read-only operation, but provides no details about authentication, response shape, data scope, or limitations. The wording essentially restates the tool name with no additional context.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.