Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare the useful traits (readOnlyHint=false, destructiveHint=false, idempotentHint=false, openWorldHint=true), so the description only needs to add context such as required permissions, what fields a risk matrix needs, or whether the matrix becomes immediately usable. It adds none of that; the phrase "viewed or edited" describes capabilities the endpoint doesn't even have, which is unhelpful though not a direct annotation contradiction.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.