27A customer-support agent can issue refunds. Which checks must live outside the model, and how do you stop abuse?▼hardNew◆ premiumDesign a refund ledger that handles authorization, concurrent reservations, distinct partial refunds and uncertain provider outcomes. A stable retry key helps, but does not enforce the business budget.Open full answer →
28An agent proposes a high-value purchase for a user to approve. How do you make sure the approval covers exactly what gets executed?▼hardNew◆ premiumFreeze the resolved purchase, authenticate the approver and verify the same action at execution. Then handle mutable addresses, simultaneous workers and a supplier timeout without treating a hash as a complete transaction protocol.Open full answer →