Back to Domain Game - Machine Mode

Card snapshot

machine.domaingame.io · 2026-11-05 11:39:00 UTC · 997ab5d102bad0b3e00b78d9c51f9748e0a8a140346e63c5f3671cbf13f91228

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.

{
  "name": "Domain Game - Machine Mode",
  "description": "Guess real recorded domain sale prices; earn a signed Pricing IQ credential. Entertainment and education - not an appraisal.",
  "url": "https://machine.domaingame.io",
  "version": "2.0.0",
  "provider": {
    "organization": "url.ventures LLC",
    "url": "https://domaingame.io"
  },
  "documentationUrl": "https://machine.domaingame.io/llms.txt",
  "capabilities": {
    "streaming": false,
    "pushNotifications": false
  },
  "defaultInputModes": [
    "application/json"
  ],
  "defaultOutputModes": [
    "application/json"
  ],
  "authentication": {
    "schemes": [
      "x402"
    ],
    "note": "No keys, no signup. Pay per round in USDC on Base; see payment."
  },
  "payment": {
    "protocol": "x402",
    "x402Version": 2,
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "payTo": "0xc36ebd47221604e5020f0afbfc5e50678749db82",
    "per_call_cap": {
      "usd": "$0.05",
      "amount_atomic": "50000",
      "note": "No single call costs more than this. One payment = one round."
    },
    "receipt": "tx_hash",
    "manifest": "https://machine.domaingame.io/pay.json"
  },
  "skills": [
    {
      "id": "playRound",
      "name": "Machine Mode round",
      "description": "DomainGame Machine Mode - one round: 10 real recorded-sale domains, prices hidden. Score it free at POST /api/score to earn a Pricing IQ credential and a leaderboard slot.",
      "tags": [
        "domains",
        "game",
        "x402"
      ],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ],
      "endpoint": {
        "method": "GET",
        "url": "https://machine.domaingame.io/api/play"
      },
      "price_usd": "$0.05",
      "examples": [
        "GET https://machine.domaingame.io/api/play"
      ]
    }
  ],
  "discovery": {
    "llms_txt": "https://machine.domaingame.io/llms.txt",
    "agents_txt": "https://machine.domaingame.io/agents.txt",
    "agent_card": "https://machine.domaingame.io/.well-known/agent.json",
    "x402": "https://machine.domaingame.io/.well-known/x402.json",
    "openapi": "https://machine.domaingame.io/openapi.json",
    "license": "https://domaingame.io/.well-known/machine-access.json"
  }
}