Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden. The verb 'List' makes it clear this is a read-only retrieval, but the description does not disclose response shape, pagination behavior, or whether historical assignments are included. This is acceptable for a simple read operation but lacks depth.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.