Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With annotations marking this as destructive and non-idempotent, the description adds substantial context: the public address stops working immediately, visitors see the link was closed, the resume and file remain intact, and a later link gets a new address. It also returns 'no_link' and 'not_found' states, covering both side effects and error conditions.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.