Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden. It indicates the operation is a read (implying non-destructive) but does not disclose what is actually returned (e.g., full tree structure, node paths, properties), whether the game must be running, or any potential side effects.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.