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, and 'Lock/unlock a node' only restates the core mutation. It does not explain what locking does (e.g., prevents selection or editing), whether the operation is reversible, or any side effects. Minimal disclosure 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.