Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full behavioral burden, yet it discloses only that there is "no setup" and that it works in any chatbot. It does not say what the tool actually returns (a prompt? a playbook? generated titles?), whether it is read-only or mutating, or how the optional query influences behavior, so the safety and output profile remain opaque.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.