Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already convey that this is destructive and not read-only, and the description adds the useful context that write permission is required. However, it does not disclose potential consequences such as permanence, impact on dependent action chains, or what happens after deletion.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.