Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries full burden. It discloses the destructive nature ('Remove all content') and the non-destructive aspect of preserving the slide ('keeping the slide itself'). It adds context beyond the schema by clarifying the slide is not deleted, but it does not mention reversibility, permissions, or effects on slide metadata.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.