Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full burden for behavioral disclosure. 'Build Docker image' implies a potentially resource-intensive operation that creates artifacts, but doesn't mention execution context (local vs remote), permissions needed, whether it modifies system state, typical runtime, or error conditions. For a tool that likely executes docker build commands, this lacks important behavioral context.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.