Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description must disclose behavioral traits. It only states that the tool 'gets' data, implying a non-destructive read, but does not mention any nuances such as whether it requires authentication, rate limits, or the exact fields returned (e.g., 'running', 'paused', simulation time).
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.