Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and closed-world, so the safety profile is fully covered and the description does not contradict it. What it adds is that the payload is the full document text plus a public citation URL and release metadata, but that return detail largely duplicates the output schema. For a read-only tool with complete annotations, this is adequate but not rich.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.