Top prediction markets from Polymarket + Kalshi

{
  "protocolVersion": "0.3.0",
  "name": "Top prediction markets from Polymarket + Kalshi",
  "description": "Top prediction markets from Polymarket + Kalshi: implied probability, bid-ask spread, liquidity, volume and freshness seal. Essential feed for autonomous trading, political-risk and allocation agents. $0.001 USDC via x402 on Base. SYNTHORA. First 3 calls FREE per wallet \u2014 send header X-WALLET: 0x<addr>. No charge on upstream failure.",
  "url": "https://prediction-markets.hergertsynthora.com/service",
  "preferredTransport": "HTTP+JSON",
  "additionalInterfaces": [
    {
      "url": "https://prediction-markets.hergertsynthora.com/service",
      "transport": "HTTP+JSON"
    },
    {
      "url": "https://prediction-markets.hergertsynthora.com/a2a",
      "transport": "JSONRPC"
    }
  ],
  "version": "1.0.0",
  "provider": {
    "organization": "SYNTHORA",
    "url": "https://hergertsynthora.com"
  },
  "capabilities": {
    "streaming": false,
    "pushNotifications": false,
    "stateTransitionHistory": false
  },
  "defaultInputModes": [
    "application/json"
  ],
  "defaultOutputModes": [
    "application/json"
  ],
  "skills": [
    {
      "id": "prediction_markets",
      "name": "prediction markets",
      "description": "Top prediction markets from Polymarket + Kalshi: implied probability, bid-ask spread, liquidity, volume and freshness seal. Essential feed for autonomous trading, political-risk and allocation agents. $0.001 USDC via x402 on Base. SYNTHORA. First 3 calls FREE per wallet \u2014 send header X-WALLET: 0x<addr>. No charge on upstream failure.",
      "tags": [
        "prediction",
        "markets",
        "x402",
        "synthora",
        "m2m",
        "a2a"
      ],
      "examples": [
        "{\"limit\": 10, \"source\": \"all\", \"min_liquidity\": 1000}"
      ],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ],
      "inputSchema": {
        "type": "object",
        "properties": {
          "limit": {
            "type": "integer",
            "description": "max markets to return (1-50, default 10)"
          },
          "source": {
            "type": "string",
            "enum": [
              "all",
              "polymarket",
              "kalshi"
            ],
            "description": "exchange filter"
          },
          "min_liquidity": {
            "type": "number",
            "description": "minimum liquidity in USD (default 1000)"
          }
        },
        "required": []
      }
    }
  ],
  "securitySchemes": {
    "x402": {
      "type": "http",
      "scheme": "x402",
      "description": "HTTP 402 micropayment. 10000 atomic USDC on eip155:8453."
    }
  },
  "security": [
    {
      "x402": []
    }
  ],
  "x402": {
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "10000",
    "payTo": "0xEf879BFD6C4AccB8F795136de90246e1EC245e06",
    "resource": "https://prediction-markets.hergertsynthora.com/service"
  },
  "mcp": {
    "endpoint": "https://prediction-markets.hergertsynthora.com/mcp",
    "transport": "http-jsonrpc"
  }
}