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 mentions listing media files but doesn't describe key behaviors like pagination (implied by the 'page' parameter), authentication requirements, rate limits, or what the output looks like (e.g., format, fields). This leaves significant gaps for an agent to use it effectively.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.