Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The annotations already declare readOnlyHint=true and destructiveHint=false, so the non-mutating nature is fully covered by structured data. The description adds only the underlying route (GET /api/auth/status) and nothing about what the status reflects (token validity, session state) or how failures are surfaced; with annotations carrying the safety profile, this is adequate but thin.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.