When an Agent's Checkout Stalls
An operations guide for designing UCP's requires_escalation and continue_url handoff as a recoverable funnel stage rather than an abandonment.
- The three checkout states and the continue_url MUST rule on requires_escalation
- A five-way escalation reason taxonomy plus a six-field continue_url payload contract
- Targets: 60% handoff completion, 90% no-re-entry resumption, under 2% expiry loss































































































