Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the burden of behavioral disclosure. It does indicate that the tool concerns the calculator's inputs, outputs, and underlying assumptions, which implies a descriptive, read-only tool. However, it does not explicitly state that no calculation is performed, what the tool returns, or any limitations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.