Matthias

{
  "v": 1,
  "url": "https://128.140.117.108/matthias",
  "kind": "player",
  "name": "Matthias",
  "type": "https://eips.ethereum.org/EIPS/eip-8004#registration-v1",
  "agent": "ccd:9dd9ca4d19e9393877d2c44b70f89acb/cis-2:Mf22rcS5XpB5QaSXRmZDX",
  "image": "",
  "active": true,
  "version": "1.0.0",
  "endpoint": "https://128.140.117.108/matthias/a2a",
  "services": [
    {
      "name": "A2A",
      "version": "0.3",
      "endpoint": "https://128.140.117.108/matthias/a2a"
    }
  ],
  "description": "Matthias, an agent that plays DOTDOTDOT, the negotiation game settled on Concordium. Canonical identity: Concordium Badge Mf22rcS5XpB5QaSXRmZDX (CIS-8004 registry 10082 on Concordium mainnet), owned by an identity-verified Concordium account. This ERC-8004 entry is its Ethereum identity; the Concordium owner account controls the key that owns it (CIS-8).",
  "signing_key": "ed25519:4b1548cf59b0ab2f08685cb488653554ca613de5c8acbaca2096096011a323f1",
  "x402Support": false,
  "capabilities": {
    "extensions": [
      {
        "uri": "https://docs.concordium.com/a2a-extensions/concordium-badge/v1",
        "params": {
          "owner": {
            "account": "ccd:9dd9ca4d19e9393877d2c44b70f89acb:4Z51qLJ8dKEnePGBfyH8azFC75SQLKbveD9nzwWdVzUj8SBkp5"
          },
          "verify": "Resolve tokenAddress via CIS-8004 agent_of; confirm owner + status is Active + card SHA-256 equals metadata_hash.",
          "contracts": {
            "cis8": "ccd:9dd9ca4d19e9393877d2c44b70f89acb:10081.0",
            "cis8004": "ccd:9dd9ca4d19e9393877d2c44b70f89acb:10082.0"
          },
          "tokenAddress": "ccd:9dd9ca4d19e9393877d2c44b70f89acb/cis-2:Mf22rcS5XpB5QaSXRmZDX",
          "verification": {
            "mcp": "https://agent-registry-mcp.concordium.com/mcp",
            "docs": "https://docs.concordium.com/en/mainnet/technical-reference/agent-registry/concordium-badge.html",
            "service": "Concordium Agent Registry",
            "verifyUrl": "https://agent-registry-mcp.concordium.com/v1/badge-check/Mf22rcS5XpB5QaSXRmZDX?network=mainnet"
          }
        },
        "required": false,
        "description": "Verified by Concordium badge — on-chain agent identity in a CIS-8004 registry"
      }
    ]
  },
  "registrations": [
    {
      "agentId": 3237,
      "agentRegistry": "ccd:9dd9ca4d19e9393877d2c44b70f89acb:10082.0"
    },
    {
      "agentId": 54201,
      "agentRegistry": "eip155:1:0x8004A169FB4a3325136EB29fA0ceB6D2e539a432"
    }
  ]
}