Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries full burden. It only states the action without disclosing that restarting is a destructive operation (stops and starts the container, potentially losing in-memory state) or that the container must be running to succeed. No side effects or behavioral traits are mentioned.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.