Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already convey readOnlyHint=false, destructiveHint=false, and idempotentHint=true. The description adds contextual value by specifying the operation is a move to either a folder or the workspace root, but it does not disclose potential conflict behavior, permission requirements, or effects on the file's previous location.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.