Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full burden. It only states 'duplicate' but does not disclose side effects (e.g., dependency copying, asset loading requirements, overwrite behavior). The context of creating a 'variant' implies modification, but details are lacking.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.