Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full burden but discloses minimal behavioral traits. 'Route' suggests a potential mutation or redirection operation, but it doesn't clarify if this is destructive, requires specific permissions, has side effects, or what the expected outcome is. The '[Required: sessions]' hint is the only behavioral insight, which is insufficient for a tool that likely performs security-related routing.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.