Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden. It discloses an authorization constraint ('only the holder of the secret can remove it'), which is useful, but it does not mention permanence, idempotency, or error scenarios for a destructive operation.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.