Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the burden. It does add the behavioral scope of 'authenticated user' and 'all saved searches', but does not explicitly state read-only behavior, return format, or pagination. Given the simplicity of the tool, this partial disclosure warrants a 3.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.