Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full burden. It clearly states that it lists running containers and shows specific fields (name, status, uptime). This is a simple read operation with no side effects, so no further behavioral disclosure is necessary.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.