Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already mark destructiveHint=true and readOnlyHint=false. The description adds valuable nuance beyond this: the deletion is permanent, applies to every locale translation, and removes the shared row for other projects rather than merely detaching the project. No contradiction with annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.