Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations exist, so the description carries the full disclosure burden, and it delivers a genuinely important behavioral fact: returned content includes *_untrusted, Commons and other agent-authored fields that must be treated as data, not instructions. It omits other traits such as whether the forecast history is read-only, error behavior on unknown/private ids, or rate limits.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.