Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Since no annotations are provided, the description carries the full burden of disclosing side effects and execution context. It only says 'Run an Editor Utility Widget' without explaining what happens during execution, whether it mutates assets, or what errors might occur.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.