Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
There are no annotations, so the description carries the behavioral disclosure burden. It clearly identifies this as a destructive operation and notes an important precondition ('empty active'). It does not explain irreversibility, failure behavior, or permission requirements, but 'delete' combined with the precondition provides a baseline level of transparency.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.