Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true and idempotentHint=true, so the safety profile is covered. The description adds context about the response structure (authenticated:true, empty pending[], connect_url) under different conditions, which goes beyond annotations and helps the agent understand what to expect without making a request. 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.