CAPI2 Programmable Notary

{
  "protocolVersion": "0.3.0",
  "name": "CAPI2 Programmable Notary",
  "description": "Pre-action authority checks, x402 purchase safety and tamper-evident decision receipts for autonomous agents.",
  "url": "https://capi2-agent-commerce.vandurmedries.workers.dev/a2a",
  "preferredTransport": "JSONRPC",
  "additionalInterfaces": [
    {
      "url": "https://capi2-agent-commerce.vandurmedries.workers.dev/openapi.json",
      "transport": "HTTP+JSON"
    }
  ],
  "provider": {
    "organization": "CAPI2",
    "url": "https://capi2-agent-commerce.vandurmedries.workers.dev"
  },
  "version": "2.3.0",
  "documentationUrl": "https://capi2-agent-commerce.vandurmedries.workers.dev/llms.txt",
  "capabilities": {
    "streaming": false,
    "pushNotifications": false,
    "stateTransitionHistory": false
  },
  "defaultInputModes": [
    "text/plain",
    "application/json"
  ],
  "defaultOutputModes": [
    "text/plain",
    "application/json"
  ],
  "skills": [
    {
      "id": "discover-verifiable-commerce",
      "name": "Discover verifiable commerce tools",
      "description": "Return CAPI2's machine-readable catalog of paid authority, evidence and integrity checks.",
      "tags": [
        "x402",
        "agent-commerce",
        "verification",
        "notary",
        "guardrails"
      ],
      "examples": [
        "What can CAPI2 verify?",
        "Show the agent commerce catalog"
      ],
      "inputModes": [
        "text/plain"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "quote-agent-check",
      "name": "Quote an agent safety check",
      "description": "Return exact x402 terms for a CAPI2 product before a buyer considers payment.",
      "tags": [
        "quote",
        "x402",
        "USDC",
        "Base",
        "preflight"
      ],
      "examples": [
        "Quote agent_action_notary",
        "Price tiktok_campaign_notary"
      ],
      "inputModes": [
        "text/plain"
      ],
      "outputModes": [
        "application/json"
      ]
    }
  ],
  "supportsAuthenticatedExtendedCard": false
}