Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description bears the full burden of behavioral disclosure. It communicates the scope ('for the authenticated user') and that it lists all schedules, but does not mention pagination, ordering, return format, or whether inactive schedules are included. It is minimally informative but not misleading.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.