Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, idempotentHint, and destructiveHint=false, so the safety profile is covered. The description adds valuable context beyond annotations: it explains the exact response structure (authenticated:true, empty pending[]) and the behavior when credentials are missing (returns connect_url and per-install URLs). This enriches the agent's understanding without contradicting any annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.