Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description bears full responsibility for behavioral disclosure. It only states 'stop', which implies halting the stream without deletion, but omits side effects, permissions required, or consequences for ongoing jobs or data. The description does not elaborate on what happens to the stream's resources.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.