Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already flag destructiveHint=true and readOnlyHint=false, so the safety profile is covered. The description still adds real value by naming what is removed (the project record, not the infrastructure) and the ordering precondition. It does not say whether the delete is hard or soft, or what happens on failure, which keeps it below a 5.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.