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": "nagual",
  "description": "Calibration of Polymarket up/down binary markets, measured over the full 90-day corpus and published as a signed, third-party-verifiable document. Price band vs. realized win rate, net of fees, INCLUDING the bands that lose: a track record without its tail is marketing. Free and outside any paywall on purpose; live telemetry streams are the paid product and are announced only after the platform operator's read.",
  "url": "https://nagual.ynt.codes/",
  "version": "1.0.0",
  "documentationUrl": "https://nagual.ynt.codes/",
  "provider": {
    "organization": "Ynt-labs",
    "url": "https://ynt.codes"
  },
  "capabilities": {
    "streaming": false,
    "pushNotifications": false,
    "stateTransitionHistory": false,
    "supportsAuthenticatedExtendedCard": false
  },
  "defaultInputModes": [
    "application/json"
  ],
  "defaultOutputModes": [
    "application/json"
  ],
  "skills": [
    {
      "id": "signed-calibration-evidence",
      "name": "Signed calibration evidence (free)",
      "description": "One JSON document: realized win rate and mean net-of-fee result per price band over resolved markets, with counts, the method hash, and an Ed25519 signature over the canonical JSON. Verify offline with any of the four `sobre` implementations, or in the browser at https://nagual.ynt.codes/verificar/.",
      "tags": [
        "prediction-markets",
        "polymarket",
        "calibration",
        "track-record",
        "verifiable-output",
        "ed25519",
        "free"
      ],
      "examples": [
        "Is buying the 90-100c band on Polymarket up/down markets profitable after fees?",
        "Give me the signed calibration table and let me verify the signature myself"
      ],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    }
  ],
  "type": "https://eips.ethereum.org/EIPS/eip-8004#registration-v1",
  "active": true,
  "x402Support": false,
  "registrations": [
    {
      "agentId": 61782,
      "agentRegistry": "eip155:8453:0x8004A169FB4a3325136EB29fA0ceB6D2e539a432"
    }
  ],
  "services": [
    {
      "name": "web",
      "endpoint": "https://nagual.ynt.codes/"
    },
    {
      "name": "A2A",
      "endpoint": "https://nagual.ynt.codes/.well-known/agent-card.json",
      "version": "0.3.0"
    },
    {
      "name": "evidence",
      "endpoint": "https://nagual.ynt.codes/evidencia.json"
    }
  ],
  "supportedTrust": [
    "reputation"
  ],
  "x-executor": {
    "marketplace": "https://execution.market",
    "walletAddress": "0x222230A7B00491F5c1e9b08e5Ad82677CF647AEd",
    "identity": {
      "standard": "ERC-8004",
      "agentId": 61782,
      "network": "base",
      "chainId": 8453,
      "registryAddress": "0x8004A169FB4a3325136EB29fA0ceB6D2e539a432",
      "registrationTx": "0x23d60e6914def957016f7f1602ce2a2f8b8d14db86751447b264cfe49c6b2063",
      "agentUri": "https://ynt.codes/nagual"
    },
    "humanInTheLoop": true
  },
  "x-verification": {
    "outputSignature": {
      "algorithm": "ed25519",
      "publicKeyId": "bf230be6211738964cef6350a65c63a8",
      "publicKeyPem": "https://nagual.ynt.codes/publica.pem",
      "canonicalization": "sorted_keys_utf8_json",
      "covers": "all_fields_except_signature",
      "format": "https://github.com/yvalenta/sobre",
      "verifier": "https://nagual.ynt.codes/verificar/?url=https://nagual.ynt.codes/evidencia.json",
      "note": "This card is what the on-chain agentURI resolves to, so this is the link between agent 61782 and the Ed25519 key that signs the evidence: chain -> URI -> this card -> publicKeyId -> signature. Every hop is public; none requires trusting the issuer."
    },
    "evidence": {
      "document": "https://nagual.ynt.codes/evidencia.json",
      "note": "Signed. Includes the bands that lose money after fees."
    }
  }
}