Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations declare destructive=true and readOnly=false, and the description goes well beyond them: it explains this is a soft-delete that renames the row to a discarded tombstone, that the original slug is freed immediately, and that it is owner-only. This is exactly the behavior an agent must know before invoking a destructive tool.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.