Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With only readOnlyHint=false and destructiveHint=false in annotations, the description carries the burden and discloses meaningful behavior: widgets are copied, receive fresh ids, and inherit type/datasources from the selection. It does not explicitly say original widgets remain untouched, but 'copied' makes that a reasonable inference.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.