Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations declare readOnlyHint and idempotentHint, which align with the described read-only status check. The description adds valuable context about conditional return values: authenticated:true with empty pending[] when all connected, and connect_url when credentials missing, going beyond the annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.