Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the safety profile is already known. The description adds valuable behavioral specifics beyond this: the state-dependent response with 'authenticated:true and empty pending[]' when connected, and the presence of 'connect_url for the toolkit and per-install URLs' when credentials are missing. It does not contradict annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.