Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full burden but only states the action without disclosing behavioral traits. It doesn't mention if this is a read-only operation, requires authentication, has rate limits, returns specific data formats, or handles errors. This leaves significant gaps for an agent to understand how to invoke it safely.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.