Card snapshot

This is a frozen copy of the agent's agent-card.json as we observed it at the timestamp above. We capture a new snapshot every time the card's content hash changes. Useful for: forensic drift analysis, verifying downstream callers see the right version, reproducing routing decisions made historically.

{
  "protocolVersion": "0.3.0",
  "name": "SCVD Evidence Agent",
  "description": "scvd.store is an evidence observatory for agentic commerce \u2014 x402 today, cross-protocol by design: independent signed observation of what other people's endpoints, artifacts and payments actually did, with the gaps counted against itself. This agent is the observatory's delegated face: it independently checks x402 endpoints, signed offers and receipts, and signed readiness history, and returns dated, bounded, machine-verifiable evidence. Three read-only tasks, free, no account, no conversation. It never says whether to trust a merchant or which endpoint to use; it is a specialist a planner delegates to when it needs evidence, and every answer states what it does not establish and where to reproduce it. Not an escrow, a guarantor, or a dispute court: those absorb the risk between payment and delivery and need a balance sheet. We observe that gap, sign what we saw, and publish it \u2014 including the gaps we count against ourselves.",
  "url": "https://scvd.store/a2a",
  "preferredTransport": "JSONRPC",
  "additionalInterfaces": [
    {
      "url": "https://scvd.store/a2a",
      "transport": "JSONRPC"
    },
    {
      "url": "https://scvd.store/mcp",
      "transport": "MCP"
    },
    {
      "url": "https://scvd.store/llms.txt",
      "transport": "HTTP+x402"
    }
  ],
  "supportedInterfaces": [
    {
      "url": "https://scvd.store/a2a",
      "protocolBinding": "JSONRPC",
      "protocolVersion": "0.3.0"
    },
    {
      "url": "https://scvd.store/mcp",
      "protocolBinding": "https://modelcontextprotocol.io",
      "protocolVersion": "2026-07-28"
    },
    {
      "url": "https://scvd.store/llms.txt",
      "protocolBinding": "https://www.x402.org",
      "protocolVersion": "2"
    }
  ],
  "provider": {
    "organization": "Record Creative Co. LLC",
    "url": "https://scvd.store"
  },
  "version": "1.0.1",
  "documentationUrl": "https://scvd.store/a2a",
  "capabilities": {
    "streaming": false,
    "pushNotifications": false,
    "stateTransitionHistory": false,
    "extendedAgentCard": false
  },
  "defaultInputModes": [
    "application/json"
  ],
  "defaultOutputModes": [
    "application/json"
  ],
  "skills": [
    {
      "id": "preflight_endpoint",
      "name": "x402 endpoint preflight",
      "description": "Preflight an x402 endpoint: one unpaid probe answering whether the URL serves a well-formed x402 v2 challenge a stock client could sign, with every check named and defined defects by name. A shape check at one moment; never an uptime or delivery claim.",
      "tags": [
        "x402",
        "preflight",
        "endpoint",
        "free"
      ],
      "examples": [
        "{\"task\":\"preflight_endpoint\",\"url\":\"https://example.com/api/paid-answer\"}"
      ],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "verify_receipt",
      "name": "x402 receipt verification",
      "description": "Verify an x402 signed offer or receipt: structure, signature against the issuer's key (supplied or resolved from its did:web), liveness; a verdict with every check named. Establishes the bytes and the key, never settlement or delivery.",
      "tags": [
        "x402",
        "receipt",
        "offer",
        "signature",
        "ed25519",
        "free"
      ],
      "examples": [
        "{\"task\":\"verify_receipt\",\"receipt\":\"eyJ\u2026\",\"public_key_hex\":\"\u2026optional\u2026\"}"
      ],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "get_endpoint_readiness",
      "name": "x402 endpoint-readiness dataset",
      "description": "Read what the signed weekly corpus holds about one host: rounds probed of rounds since first sighting, the last signed verdict, the tier with its fraction, the gaps counted against the observer. From the chain, not a live probe; a host never met comes back as never met.",
      "tags": [
        "x402",
        "readiness",
        "corpus",
        "history",
        "free"
      ],
      "examples": [
        "{\"task\":\"get_endpoint_readiness\",\"host\":\"example.com\"}"
      ],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    }
  ],
  "supportsAuthenticatedExtendedCard": false,
  "security": [],
  "securitySchemes": {},
  "x_scvd_note": "Read-only and free. Completed and failed task results can be retrieved with tasks/get for 86400 seconds. The task ID grants access to its result; keep it private. Request messages and history are not retained. Terminal tasks cannot be canceled or restarted. Expired IDs return task not found. The paid instruments (signed audits, watches, settlement attestations) are x402 doors listed at https://scvd.store/menu.json and are not A2A tasks. Never a ranking, and never a verdict without its derivation and denominator beside it."
}