Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare destructiveHint=true and idempotentHint=true, so the safety profile is covered. The description adds genuine non-annotation context — that a Django ProtectedError is surfaced as a 409 Conflict listing dependents — which tells the agent how failure looks and that deletion may be blocked by references. It stops short of saying what gets destroyed or whether cascade occurs, and the sentence is truncated.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.