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feat: implement 'requires_escalation' triggered by risk signals #25

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feat: implement 'requires_escalation' triggered by risk signals #25

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@0x8000-0000 0x8000-0000 commented Jan 17, 2026

Why:

  • To enable conformance testing of the checkout escalation flow according to spec.
  • Provides a deterministic way to trigger 'requires_escalation' via 'risk_signals' payload in 'complete_checkout'.

What:

  • Removed hardcoded buyer name check.
  • Updated 'complete_checkout' to check for 'simulation_trigger': 'escalation_required' in 'risk_signals'.
  • When triggered, returns 200 OK with status 'requires_escalation', 'continue_url', and 'requires_buyer_input' message, instead of completing the order.

@0x8000-0000 0x8000-0000 requested a review from a team January 17, 2026 00:09
@0x8000-0000 0x8000-0000 mentioned this pull request Jan 17, 2026
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feat: implement 'requires_escalation' and fix AP2 verification
cbf87e2 
Why:
- To enable conformance testing of the checkout escalation flow according to spec.
- To fix AP2 signature verification logic and missing exceptions which caused tests to fail/pass falsely.

What:
- Updated 'complete_checkout' to check for 'simulation_trigger': 'escalation_required'.
- Added '/recover/{checkout_id}' mock endpoint for 'continue_url'.
- Fixed 'Ap2VerificationError' definition and usage.
- Restored '_verify_ap2_mandate' method.
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