Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint:true and idempotentHint:true, covering the safety profile. The description adds value by detailing the response behavior in different states (all providers connected vs. credentials missing), including the 'pending[]' array and connect_url. No contradictions 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.