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. 'Clone an existing node' implies a mutating operation, but it does not clarify whether the original node is preserved, where the clone is inserted, how x and y affect positioning, or what side effects occur. This is a significant gap for a 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.