Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full behavioral burden. It discloses the return payload and notes that tokens are fake, which is useful, and 'Return' implies read-only behavior. However, it does not address error behavior for unknown channels, whether config is scoped to the current app, or the response format.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.