Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already indicate this is not read-only, not destructive, and open-world, so the basic mutation profile is clear. The description adds the immediate-vs-scheduled distinction but does not disclose additional behavioral context such as external side effects, irreversibility of publishing, or validation rules around scheduledAt.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.