Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, openWorldHint, and idempotentHint, so the description's burden is reduced. The description adds context about using EPA TRI and GRI data and producing a roadmap, but it does not mention the async parameter or potential latency, which is a significant behavioral aspect given the async option in the schema.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.