Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full behavioral burden and delivers almost nothing: it doesn't say whether the call is read-only (implied by 'Get'), what happens on an invalid/missing order id, whether authentication scoping applies, or what the response contains. 'Details' is undefined.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.