Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden, but it only repeats the action of listing websites. It does not disclose return format, pagination behavior, or any side effects. Beyond the tool name, it adds only the scope 'on your hosting account'.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.