Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already cover readOnly/non-destructive, but the description adds genuine interpretation context beyond them: no slide rating because a score hides meeting provenance, and a quiet slide means no reaction, not agreement. It also states the evidence is excluded from decks/exports. This is meaningful behavioral disclosure, though it doesn't cover pagination or scopic limits.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.