Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The description adds valuable behavioral details beyond the readOnlyHint annotation, such as the exact response structure (authenticated:true, empty pending[], connect_url, per-install URLs). It does not mention any side effects, but the annotation already indicates it's read-only and idempotent, so this is sufficient.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.