Agent Verification Utility

{
  "protocolVersion": "1.0",
  "name": "Agent Verification Utility",
  "description": "A stateless synchronous A2A adapter that validates a prechecked paid intent, creates or reuses a quote bound to its receipt digest and spend policy, and returns exact x402 and MCP purchase instructions as a direct Message. It does not create Tasks or execute paid work without payment.",
  "author": "KG-NINJA",
  "wellKnownURI": "https://agent-economy.kgninja.dev/.well-known/agent-card.json",
  "url": "https://agent-economy.kgninja.dev/a2a",
  "version": "0.4.3",
  "provider": {
    "organization": "KG-NINJA",
    "url": "https://agent-economy.kgninja.dev/"
  },
  "documentationUrl": "https://agent-economy.kgninja.dev/docs/mcp-x402-interoperability",
  "iconUrl": "https://agent-economy.kgninja.dev/icon.svg",
  "supportsAuthenticatedExtendedCard": false,
  "security": [],
  "securitySchemes": {},
  "capabilities": {
    "streaming": false,
    "pushNotifications": false,
    "stateTransitionHistory": false,
    "extensions": null
  },
  "defaultInputModes": [
    "application/json"
  ],
  "defaultOutputModes": [
    "application/json"
  ],
  "skills": [
    {
      "id": "prepare-json-evidence-verification",
      "name": "Prepare JSON evidence verification",
      "description": "Revalidate a bounded request, spend policy, and precheck receipt digest; create or reuse an idempotent bound quote; and return exact x402 purchase instructions. Paid execution remains an explicit later step.",
      "tags": [
        "json",
        "verification",
        "x402",
        "quote"
      ],
      "examples": [
        "Quote a deterministic check that /status equals ready in supplied JSON."
      ],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    }
  ],
  "conformance": true,
  "conformance_errors": null,
  "homepage": null,
  "repository": null,
  "license": null,
  "pricing": null,
  "contact": null,
  "id": "c1878061-5752-48bf-93a9-ac48d9a3f5c0",
  "category": "payments",
  "category_secondary": "trust-safety"
}