Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden of behavioral disclosure. It does disclose the response scope — metadata and every task, implying a potentially large read operation. It does not mention pagination, error handling, authentication, or performance, but the core read-only behavior is stated.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.