Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations exist, so the description carries full responsibility. It discloses the core state change ('status = active') but omits important behavioral context such as idempotency, behavior when the user is already active, permission requirements, or what the operation returns. For a mutation tool, this is a significant gap.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.