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 offers none. It does not clarify whether cancellation is reversible, if it triggers refunds, affects associated enrollments/invoices, or requires specific permissions. For a mutation operation, this omission is significant.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.