Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden of disclosing side effects. It only states the action without mentioning that the node is removed from its old parent, whether the new parent must exist, what happens to the node's position, or whether the operation is reversible. This is insufficient for a structural mutation tool.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.