Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden. It does disclose that the action is irreversible ('cannot be undone'), which is critical. However, it omits other behavioral details like whether deletion is cascading, permission requirements, or any side effects.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.