Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full burden but only states the action ('Delete') without behavioral details. It doesn't disclose whether deletion is permanent/reversible, requires specific permissions, has side effects (e.g., affecting associated agents), or returns confirmation data. For a destructive operation, this leaves critical gaps.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.