Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description must reveal behavioral traits, but it only notes a plan requirement. It fails to mention whether the operation is read-only, what data is returned (e.g., count, time range), or any side effects, leaving the agent without critical behavioral context.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.