Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden. 'List' implies a read-only operation, and 'for every configured connector' discloses the scope (all connectors, not filtered). It does not mention return format or potential errors, but for a simple list operation, the behavior is adequately transparent.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.