{
  "name": "MandateShield Payment Authority Agent",
  "description": "Checks whether an AI-agent purchase stays inside the user's explicit amount, currency, merchant, consent, expiry and replay boundaries before payment.",
  "url": "https://mandateshield.com/a2a",
  "protocolVersion": "1.0",
  "supportedInterfaces": [
    {
      "url": "https://mandateshield.com/a2a",
      "protocolBinding": "JSONRPC",
      "protocolVersion": "1.0"
    }
  ],
  "provider": {
    "organization": "MandateShield",
    "url": "https://mandateshield.com"
  },
  "version": "2.0.0",
  "documentationUrl": "https://mandateshield.com/developers",
  "capabilities": {
    "streaming": false,
    "pushNotifications": false,
    "extendedAgentCard": false
  },
  "defaultInputModes": ["application/json", "text/plain"],
  "defaultOutputModes": ["application/json", "text/plain"],
  "skills": [
    {
      "id": "verify-cryptographic-payment-authority",
      "name": "Verify Cryptographic Payment Authority",
      "description": "Verify JWS, AP2 SD-JWT or Visa TAP-style HTTP message evidence, enforce purchase bindings and return a signed portable decision receipt.",
      "tags": [
        "cryptographic authorization",
        "signed mandate",
        "SD-JWT",
        "RFC 9421",
        "AP2",
        "TAP",
        "decision receipt"
      ],
      "examples": [
        "Verify that this AP2 payment mandate cryptographically binds the final payee and amount.",
        "Validate fresh TAP request evidence before allowing checkout."
      ],
      "inputModes": ["application/json"],
      "outputModes": ["application/json"]
    },
    {
      "id": "check-ai-payment-authority",
      "name": "Check AI Payment Authority",
      "description": "Evaluate a normalized purchase envelope immediately before payment execution. Returns ALLOW, REVIEW or BLOCK with exact findings and a receipt.",
      "tags": [
        "agentic commerce",
        "AI payments",
        "payment authorization",
        "AP2",
        "UCP",
        "TAP",
        "x402",
        "ACP"
      ],
      "examples": [
        "Check whether this $124.90 rail purchase stays inside a $150 AP2 mandate.",
        "Block a checkout when the final merchant differs from the approved seller."
      ],
      "inputModes": ["application/json", "text/plain"],
      "outputModes": ["application/json", "text/plain"]
    }
  ]
}