Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full burden but offers minimal behavioral insight. It states it 'gets' a list, implying a read-only operation, but doesn't disclose critical traits like whether it requires authentication, returns paginated results, includes metadata (e.g., deletion dates), or has rate limits. For a tool with zero annotation coverage, this leaves significant gaps in understanding its behavior.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.