Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With readOnlyHint and openWorldHint already declaring the safety profile, the description adds real context: the listing is deliberately thin (title, department, work location), full detail requires a follow-up call, and the endpoint is credential-free public JSON. It doesn't cover rate limits or pagination, but the added behavioral detail is substantial.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.