Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations provided, so the description bears full responsibility for behavioral disclosure. It fails to mention how invalid URLs are handled, the impact of include_subdomain parameter, or any return value structure. The description is too minimal for an agent to infer behavior beyond basic extraction.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.