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 but fails completely. It doesn't mention that this is a write operation requiring permissions, doesn't describe what happens upon creation (e.g., returns a meeting ID), doesn't warn about required fields, and provides no information about rate limits, error conditions, or system behavior.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.