Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden of behavioral disclosure. It only states 'Delete a wiki page' without revealing whether the deletion is permanent, requires special permissions, affects subpages, or returns a confirmation. This is a significant omission 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.