Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare destructiveHint=true, idempotentHint=true, openWorldHint=true and readOnlyHint=false, so the safety profile is covered structurally. The description adds nothing on top of that — no note that deletion is permanent, whether the webhook stops firing immediately, or what happens to historical logs. With annotations carrying the burden, this is the minimum-additive case, not a contradiction.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.