Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries full burden. It states the tool returns a canonical list, implying a read-only operation with no side effects. It does not disclose source, caching, or authentication needs, but for a zero-parameter tool, the behavior is minimal and acceptable.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.