Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full burden but offers minimal behavioral insight. 'Delete' implies a destructive mutation, but it doesn't disclose whether this requires admin permissions, if deletion is permanent/reversible, what happens to dependent rules, or typical error cases. The description adds no context beyond the basic action.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.