Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries full burden for behavioral disclosure. It only says 'delete' which implies destructive action but doesn't disclose side effects (e.g., cascading deletes, soft vs hard delete behavior, reversibility, or auth requirements). Parameters like 'hard_delete' and 'recursive' hint at behavior but are not explained.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.