Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden of behavioral disclosure, but it only says 'Stop.' It doesn't reveal whether stopping is idempotent (safe to call when nothing is running), whether workflow state is reset or preserved, whether it affects recordings, or what the return value signals. For a state-changing control operation, this is a significant gap.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.