Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden of behavioral disclosure. It only states that it gets a space, without describing the return format, error handling, permissions, or whether the operation is idempotent. The description adds no behavioral context beyond what the tool name and schema already imply.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.