Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden. It discloses that this is a minting operation, the destination wallet, and the supported environments, which is useful. However, it does not explain network prerequisites, whether the operation is irreversible, or what happens if used outside the supported environments.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.