Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the burden and does supply useful traits: explicit read-only status, newest-first ordering, pagination, and the returned field set. It omits auth/prerequisite context and what 'paged' concretely implies (default page size, whether a total count is returned, how to exhaust history).
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.