Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full transparency burden. 'List' clearly indicates a read-only operation, and the description discloses the exact data returned (volume, routing, flags, effect chain). It does not mention side effects or permissions, but for a list operation 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.