Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden. It discloses the return format (summary string with compatibility, missing packages, and install commands) and the criteria (requirements and platform_compatibility). It does not mention potential side effects or error conditions, but as a read-only validation tool, this is adequate.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.