Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations present, the description carries the full burden of behavioral disclosure, but it only conveys that the operation is a read ('Get'). It does not disclose whether returned incidents are open, resolved, or both; how the hours parameter shapes results beyond the schema; or any pagination or result-limit behavior.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.