Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Adds substantial context beyond the annotations: it names the collateral data destroyed (transcript, summary, translations), states irreversibility, and discloses the ownership authorization constraint. These are exactly the facts an agent needs before firing a destructive call.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.