PROTOCOL FIELD BRIDGE · V1

Bring AP2, x402 and MPP to one enforceable boundary.

Paste a supported payment-protocol input, inspect every projected binding and produce the exact purchase envelope that your trusted authority signs. Field mapping is immediate; source-protocol conformance and execution remain fail-closed.

Source protocolProtocol source and trusted context

{
  "adapter": "X402_V2_PAYMENT_REQUIRED",
  "source": {
    "x402Version": 2,
    "resource": {
      "url": "https://api.example.test/v1/report/7",
      "description": "Research report access"
    },
    "accepts": [
      {
        "scheme": "exact",
        "network": "eip155:8453",
        "amount": "2500000",
        "asset": "eip155:8453/erc20:0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
        "payTo": "0x1111111111111111111111111111111111111111",
        "maxTimeoutSeconds": 300
      }
    ]
  },
  "context": {
    "mandate_id": "mnd_api_access_2048",
    "agent_id": "agent_research_07",
    "idempotency_key": "x402_report_7_attempt_1",
    "merchant_id": "merchant_data_api",
    "asset_decimals": 6,
    "payee_identity": {
      "profile": "MANDATESHIELD_PAYEE_IDENTITY_V1",
      "provider": "X402",
      "merchant_id": "merchant_data_api",
      "binding": {
        "network": "eip155:8453",
        "pay_to": "0x1111111111111111111111111111111111111111"
      },
      "verification": {
        "method": "TRUSTED_MERCHANT_MAPPING",
        "verifier": "example-merchant-registry",
        "evidence_ref": "https://registry.example.test/merchants/merchant_data_api"
      }
    }
  }
}

Do not enter private keys or payment credentials. Normalization checks only documented projection fields, exact payee bindings and explicit evidence references; it does not fetch or certify that evidence and never claims full protocol conformance, authorizes or executes payment.

AP2 · X402 V2 · MPP

One authority envelope for three payment protocols.

Choose a source, inspect the exact mapping and keep signature, trust and settlement checks in their correct boundaries.

Documented fields, honest assurance

The adapter decodes the selected documented projection. It neither establishes full source-protocol conformance nor turns a merchant offer or payment credential into delegated user authority.

Deterministic binding

Amount, merchant, asset, network, resource and checkout facts become one canonical envelope and digest suitable for strict signing.

One path to execution

Strict v2 verifies the signed envelope, reserves budget and issues a receipt. A trusted gateway still needs a fresh one-time provider permit.