Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The phrase 'Look up' implies a read-only operation, but the description does not explicitly state that it has no side effects, nor does it mention authentication requirements, error behavior, or what happens with invalid links. Since annotations are absent, the description carries the burden and covers the basic read-only nature but lacks deeper behavioral disclosure.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.