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 states the action but omits important side effects such as irreversibility, impact on active sessions, or what 'jobs' refers to (e.g., queued jobs, cached job lists). This is a destructive operation, and the description does not provide safety context beyond the verb 'clear'.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.