Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already provide key behavioral hints: destructiveHint=true (indicates permanent deletion), readOnlyHint=false (confirms mutation), idempotentHint=false (non-idempotent), openWorldHint=true (open world). The description adds minimal value beyond this - it confirms the POST method but doesn't provide additional context about what gets destroyed, recovery options, or side effects. No contradiction with annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.