{
  "tool_id": "art-476-map-agent-payment-mandate",
  "note": "golden_hash filled by golden-parity.test.mjs --update. Vector 1: AP2->x402, missing payer_ref makes mapping_ok false (honest gap, not invented). Vector 2: x402->ACP, missing payee_ref does not block ACP (not required there), purpose is lossy. Vector 3: AP2->ACP, human_not_present + max_amount lossy (ACP DRAFT-GENERIC has neither slot), mapping_ok true. Vector 4: unrecognised target protocol rejected honestly, never guessed.",
  "vectors": [
    {
      "name": "ap2_to_x402_missing_payer_ref",
      "description": "AP2 payment mandate translates to an x402 PaymentPayload (scheme:exact); AP2 has no payer-identifier field, so canonical payer_ref stays null and x402's required-field list (payer_ref/payee_ref/amount/expires_at) is not fully met -- missing_required_target_fields:[\"payer_ref\"], mapping_ok:false. human_not_present is also lossy (x402 has no human-presence slot). Demonstrates the receipt surfacing an honest cross-protocol gap rather than inventing a payer.",
      "policy_parameters": {
        "source_protocol": "ap2",
        "target_protocol": "x402",
        "source_mandate": {
          "mandate_id": "ap2-pay-001",
          "mandate_type": "payment",
          "merchant_id": "merchant-42",
          "amount": 25.5,
          "currency": "USDC",
          "issued_at": "2026-07-24T10:00:00Z",
          "expires_at": "2026-07-24T11:00:00Z",
          "human_not_present": true,
          "scope": {
            "max_amount": 100,
            "merchant_ids": [
              "merchant-42"
            ]
          }
        }
      },
      "output_payload": {
        "source_protocol": "ap2",
        "target_protocol": "x402",
        "mapping_table_version": "AI2-MAP-V1-2026-07-24",
        "protocol_versions": {
          "ap2": "AP2 v0.2 (per art-01/art-62 field usage, live 2026-07-18)",
          "x402": "x402 (Coinbase, scheme=exact; per art-26 field usage, live 2026-07-18)"
        },
        "canonical_pivot": {
          "mandate_id": "ap2-pay-001",
          "payer_ref": null,
          "payee_ref": "merchant-42",
          "amount": 25.5,
          "currency": "USDC",
          "max_amount": 100,
          "issued_at": "2026-07-24T10:00:00Z",
          "expires_at": "2026-07-24T11:00:00Z",
          "human_not_present": true,
          "purpose": "merchant-42"
        },
        "translated_mandate": {
          "x402Version": 1,
          "scheme": "exact",
          "maxAmountRequired": 100,
          "resource": "merchant-42",
          "payTo": "merchant-42",
          "asset": "USDC",
          "payload": {
            "authorization": {
              "from": null,
              "to": "merchant-42",
              "value": 25.5,
              "validAfter": "2026-07-24T10:00:00Z",
              "validBefore": "2026-07-24T11:00:00Z",
              "nonce": "ap2-pay-001"
            }
          }
        },
        "mapping_receipt": {
          "source_digest": "6f6c4f9b8f59c9a6d0b61825bdb522a00290df017299176cbcea232c6756059c",
          "target_digest": "b190008e4f0158fa351ebd7df33bd8285b850550fb78dc1ac1bb889d74c13ded",
          "mapping_table_version": "AI2-MAP-V1-2026-07-24",
          "lossy_fields": [
            "human_not_present"
          ]
        },
        "missing_required_target_fields": [
          "payer_ref"
        ],
        "mapping_ok": false
      },
      "compliance_flags": [
        "MAPPING_INCOMPLETE",
        "FIELDS_DROPPED_NOT_SILENT",
        "ESCALATION_RAISED"
      ],
      "golden_hash": "38c8b3c43c10bf22bb4b2b0a79710af74d39463b8d89c4a8c7bf289c19211918"
    },
    {
      "name": "x402_to_acp_lossy_purpose",
      "description": "x402 PaymentPayload (no payTo/authorization.to present, so canonical payee_ref is null) translates to ACP (DRAFT-GENERIC target). ACP's required fields (mandate_id/amount/currency) all resolve from x402's nonce/value/asset, so mapping_ok is true despite the missing payee_ref -- ACP does not require payee_ref. purpose (from x402 resource) is a declared lossy field because the ACP DRAFT-GENERIC profile has no purpose slot.",
      "policy_parameters": {
        "source_protocol": "x402",
        "target_protocol": "acp",
        "source_mandate": {
          "x402Version": 1,
          "scheme": "exact",
          "asset": "USDC",
          "resource": "order-9981",
          "payload": {
            "authorization": {
              "from": "agent-buyer-7",
              "value": "4200000",
              "validAfter": "2026-07-24T09:00:00Z",
              "validBefore": "2026-07-24T09:30:00Z",
              "nonce": "x402-nonce-abc"
            }
          }
        }
      },
      "output_payload": {
        "source_protocol": "x402",
        "target_protocol": "acp",
        "mapping_table_version": "AI2-MAP-V1-2026-07-24",
        "protocol_versions": {
          "x402": "x402 (Coinbase, scheme=exact; per art-26 field usage, live 2026-07-18)",
          "acp": "ACP DRAFT-GENERIC-2026-07-24 (unconfirmed public schema; re-verify before conformance claims)"
        },
        "canonical_pivot": {
          "mandate_id": "x402-nonce-abc",
          "payer_ref": "agent-buyer-7",
          "payee_ref": null,
          "amount": "4200000",
          "currency": "USDC",
          "max_amount": null,
          "issued_at": "2026-07-24T09:00:00Z",
          "expires_at": "2026-07-24T09:30:00Z",
          "human_not_present": null,
          "purpose": "order-9981"
        },
        "translated_mandate": {
          "checkout_session_id": "x402-nonce-abc",
          "buyer_id": "agent-buyer-7",
          "merchant_id": null,
          "total_amount": "4200000",
          "currency": "USDC",
          "created_at": "2026-07-24T09:00:00Z",
          "expires_at": "2026-07-24T09:30:00Z"
        },
        "mapping_receipt": {
          "source_digest": "f8d9f6091cdbdaf8e46c0bf5ec727233fe354b25de1ed8f47064ef0d0e601377",
          "target_digest": "622727fc815fc69bd880c8ac1d568687b116ae0769ac62f1e2d9ec445652d5c8",
          "mapping_table_version": "AI2-MAP-V1-2026-07-24",
          "lossy_fields": [
            "purpose"
          ]
        },
        "missing_required_target_fields": [],
        "mapping_ok": true
      },
      "compliance_flags": [
        "MAPPING_COMPLETE",
        "FIELDS_DROPPED_NOT_SILENT"
      ],
      "golden_hash": "0da72139dcbf33e8448230513b79b9c7cf3c646b8248dda426de20d883d0158d"
    },
    {
      "name": "ap2_to_acp_lossy_human_not_present",
      "description": "AP2 payment mandate with human_not_present=true translates to ACP (DRAFT-GENERIC profile); ACP has no human-presence slot so human_not_present is a declared lossy field even though all of ACP's required canonical fields (mandate_id, amount, currency) resolve and mapping_ok is true.",
      "policy_parameters": {
        "source_protocol": "ap2",
        "target_protocol": "acp",
        "source_mandate": {
          "mandate_id": "ap2-pay-002",
          "mandate_type": "payment",
          "merchant_id": "merchant-77",
          "amount": 9.99,
          "currency": "USD",
          "issued_at": "2026-07-24T12:00:00Z",
          "expires_at": "2026-07-24T12:15:00Z",
          "human_not_present": false,
          "scope": {
            "max_amount": 50
          }
        }
      },
      "output_payload": {
        "source_protocol": "ap2",
        "target_protocol": "acp",
        "mapping_table_version": "AI2-MAP-V1-2026-07-24",
        "protocol_versions": {
          "ap2": "AP2 v0.2 (per art-01/art-62 field usage, live 2026-07-18)",
          "acp": "ACP DRAFT-GENERIC-2026-07-24 (unconfirmed public schema; re-verify before conformance claims)"
        },
        "canonical_pivot": {
          "mandate_id": "ap2-pay-002",
          "payer_ref": null,
          "payee_ref": "merchant-77",
          "amount": 9.99,
          "currency": "USD",
          "max_amount": 50,
          "issued_at": "2026-07-24T12:00:00Z",
          "expires_at": "2026-07-24T12:15:00Z",
          "human_not_present": false,
          "purpose": null
        },
        "translated_mandate": {
          "checkout_session_id": "ap2-pay-002",
          "buyer_id": null,
          "merchant_id": "merchant-77",
          "total_amount": 9.99,
          "currency": "USD",
          "created_at": "2026-07-24T12:00:00Z",
          "expires_at": "2026-07-24T12:15:00Z"
        },
        "mapping_receipt": {
          "source_digest": "5d96c0fd1c4491936f1fff53eea503ebbe78ea2b03a0f5c7bdf1fe226f6b3964",
          "target_digest": "bb693287d6f56c0963c099d4c98b89248716e8a8df40db7a34bb8d27d0867244",
          "mapping_table_version": "AI2-MAP-V1-2026-07-24",
          "lossy_fields": [
            "max_amount",
            "human_not_present"
          ]
        },
        "missing_required_target_fields": [],
        "mapping_ok": true
      },
      "compliance_flags": [
        "MAPPING_COMPLETE",
        "FIELDS_DROPPED_NOT_SILENT"
      ],
      "golden_hash": "1559f2b8751b7376cb78300ef901d9545a1a6f8b5659954a083d94e87d33aa8c"
    },
    {
      "name": "unknown_protocol_rejected",
      "description": "target_protocol names a protocol outside {ap2, x402, acp} (\"visa_tap\") -- rejected honestly with error:\"unknown_protocol\" rather than guessing a mapping; confirms the kernel never emits a partial/garbage translation for an unrecognised protocol.",
      "policy_parameters": {
        "source_protocol": "ap2",
        "target_protocol": "visa_tap",
        "source_mandate": {
          "mandate_id": "ap2-pay-003",
          "amount": 10,
          "currency": "USD"
        }
      },
      "output_payload": {
        "error": "unknown_protocol",
        "detail": "source_protocol and target_protocol must each be one of ap2, x402, acp.",
        "source_protocol": "ap2",
        "target_protocol": "visa_tap"
      },
      "compliance_flags": [
        "MAPPING_REJECTED"
      ],
      "golden_hash": "8a013db75e07fe8e6e7338353a80fc3e890f67803cda1f678a8effde5598b282"
    }
  ]
}