Top Polymarket prediction markets by 24h volume

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x0Cb12Df486381A0EBeBc0EF338dA80657f68f9cB",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "10000",
    "maxTimeoutSeconds": 300
  }
]

{
  "bazaar": {
    "info": {
      "input": {
        "method": "GET",
        "queryParams": {
          "limit": 20,
          "sort": "volume"
        },
        "type": "http"
      },
      "output": {
        "example": {
          "count": 3,
          "markets": [
            {
              "id": "3713394",
              "liquidity": 435.25,
              "question": "Will the highest temperature in Panama City be 29°C on August 20?",
              "volume": 99.99,
              "volume24hr": 85
            }
          ],
          "source": "polymarket",
          "success": true,
          "timestamp": "2026-08-20T13:00:00.000Z"
        },
        "type": "json"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "method": {
              "enum": [
                "GET"
              ],
              "type": "string"
            },
            "queryParams": {
              "properties": {
                "limit": {
                  "default": 20,
                  "description": "Number of markets (1-50, default 20)",
                  "maximum": 50,
                  "minimum": 1,
                  "type": "integer"
                },
                "sort": {
                  "default": "volume",
                  "description": "Sort field",
                  "enum": [
                    "volume",
                    "liquidity",
                    "startDate"
                  ],
                  "type": "string"
                }
              },
              "type": "object"
            },
            "type": {
              "const": "http",
              "type": "string"
            }
          },
          "required": [
            "type",
            "method"
          ],
          "type": "object"
        },
        "output": {
          "properties": {
            "example": {
              "type": "object"
            },
            "type": {
              "type": "string"
            }
          },
          "required": [
            "type"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  }
}

curl "https://api.speccy.cloud/v1/predictions/polymarket"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

const res = await fetch("https://api.speccy.cloud/v1/predictions/polymarket");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

import httpx
res = httpx.get("https://api.speccy.cloud/v1/predictions/polymarket")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header