Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries full burden but only states what the tool does, not how it behaves. It lacks details on permissions needed, rate limits, pagination, return format, or whether it's a read-only operation, which are critical for a tool fetching organizational data.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.