Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations provided, so description carries full burden. It implies a read-only operation ('checks') and mentions it returns account info and token status. However, it lacks details on error behaviors (what happens with expired tokens), rate limits, or whether this call refreshes the token.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.