Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The description goes far beyond the annotations, detailing the terminal `canceled` status, the shutdown of further decisions, waking of pending `elicit_await` calls, the absence of an `elicit_result` outcome, error conditions, and the race behavior. This is rich, accurate behavioral context that an agent needs.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.