Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The description hints at an external dependency ('verified against... published IP data on seoapi.com') but does not explicitly state that a network call is required, nor does it disclose potential issues like rate limits, latency, or error handling. Without annotations, the description carries the full burden and falls short.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.