Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full transparency burden. It openly declares it as a write operation ('write'), specifies the mechanism (supervisor), requires 'admin JWT with write_system_settings', and clearly states what it does NOT fix. This goes beyond the minimal and gives an accurate behavioral model.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.