Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full burden for behavioral disclosure. It states this is a mutation operation ('reschedule') but doesn't mention permission requirements, whether changes are reversible, potential side effects on other systems, rate limits, or what happens to deliveries outside the specified order_types. The return statement is minimal.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.