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 it only states 'List all alerts' without revealing any behavioral traits such as pagination, ordering, scope (e.g., user-specific vs. global), or whether it returns only current alerts versus historical ones. This is minimal and leaves significant ambiguity.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.