Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already indicate destructiveHint=true and readOnlyHint=false, but the description adds valuable context by specifying that data files are deleted, which clarifies the irreversible nature beyond just 'destructive'. It doesn't mention permissions, rate limits, or confirmation steps, but the added detail about data files enhances transparency.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.