Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare destructiveHint=true, openWorldHint=true and idempotentHint=false, so the risk profile is covered structurally. The description adds genuinely useful behavior beyond that: an ownership/trust prerequisite and the need for an interactive Windows x64 desktop session. It omits the most important behavioral fact for a destructive tool, namely that input is delivered to whatever currently has focus and can therefore land in the wrong window.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.