Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the burden of behavioral disclosure. It does clarify that the result is a summary containing tracks, bad reviews, and suggested actions, implying a read-only digest. However, it does not explicitly state that no changes are made, whether authentication is required, or how the data is sourced.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.