Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so transparency is largely covered. The description adds valuable behavioral detail by specifying exact return states (authenticated:true with empty pending[] and connect_url when credentials are missing) that are not present in annotations, fully aligning with the safety profile.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.