Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden, and it does disclose the single most important trait: the deletion is irreversible. However, it omits other relevant behavior such as whether child/subpages are cascaded, permission or authorization requirements, and whether the action fails on a missing page — meaningful gaps 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.