Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden, but it only states that the tool returns a single catalog entry with effect/stats where casclash provides them. It does not disclose what happens when no entry is found, whether the result is a full object or a summary, pagination, or any other behavioral trait.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.