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 the tool destroys logs and that logs are stored in-memory, but it does not explicitly warn that the action is irreversible or describe any side effects. Basic behavioral disclosure is present, but richer context is missing 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.