Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The annotations already declare destructiveHint=true and idempotentHint=true, so the description is not the sole source of safety information. The description adds valuable context by defining exactly which projects are eligible for deletion and ruling out launched projects, though it does not explicitly say whether deletion is irreversible or what happens to associated resources.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.