Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden of behavioral disclosure. It only says 'Download' without any details about what happens to the downloaded content (saved to disk, returned as output), whether an active session is required, or potential side effects. This is a significant gap for a tool that likely interacts with a remote system.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.