Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already signal that this is a destructive, non-read-only operation. The description adds the word 'permanently,' reinforcing irreversibility. It does not disclose potential side effects like whether associated sessions or knowledge bases are also deleted, or what happens if the agent does not exist. Given the annotations cover the core safety profile, this modest addition warrants a midpoint score.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.