Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full behavioral burden. It usefully discloses that one-time backup codes are returned, but it omits whether confirming setup enables 2FA, what permissions are required, whether backup codes are shown only once, and how invalid or expired tokens are handled for this security-sensitive mutation.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.