Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations are minimal (only title); description bears full burden. It lists what info is gathered but does not mention side effects, permissions, or return format. It is clear that it is a read-only operation, but additional context (e.g., no destructive actions) would improve transparency.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.