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 adds value by specifying that both incoming and outgoing references are returned, which is useful context. However, it does not disclose the response format, error behavior, or prerequisites (e.g., whether the task must exist), leaving gaps for an agent.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.