{"endpoints":{"complete_checkout_session_template":"/checkout-sessions/{session_id}/complete","create_checkout_session":"/checkout-sessions"},"signing_keys":[{"alg":"ES256","crv":"P-256","kid":"merchant-demo-1","kty":"EC","use":"sig","x":"9Aj2Bdqax6b1l9AWbhZ1In-LRppDCIeQMKKE9-4BwoA","y":"_T3zUuOYA_X8HVUl_v7eJnL0bzUQjgFBxV0Ynx0e3Bg"}],"ucp":{"capabilities":["ap2_mandates"],"display_name":"Demo-Supermarkt","payment_handlers":["sepa_transfer"],"services":["checkout"],"version":"2026-04-08"}}