Cross-DEX price, liquidity and gross arbitrage spread for ONE BSC pair in a single call, a

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x2740651e046c59aB2A6510401140643292d3a96F",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "10000",
    "maxTimeoutSeconds": 300
  }
]

{
  "bazaar": {
    "info": {
      "input": {
        "method": "GET",
        "queryParams": {
          "pair": "WBNB/USDC"
        },
        "type": "http"
      },
      "output": {
        "example": {
          "bestBuy": {
            "price": 546.2,
            "venue": "pancakeV3:500"
          },
          "bestSell": {
            "price": 546.9,
            "venue": "pancake"
          },
          "blockNumber": 107399076,
          "chainId": 56,
          "crossDex": {
            "buyVenue": "pancakeV3:500",
            "grossSpreadBps": 14.05,
            "grossUsd": 3.2,
            "optimalInput": {
              "amount": 2.1,
              "token": "WBNB",
              "usd": 1148
            },
            "sellVenue": "pancake",
            "surface": "v2v3",
            "tickBoundaryBreach": false
          },
          "liquidity": {
            "totalTvlUsd": 9800000,
            "venues": 7
          },
          "midSpreadBps": 27.4,
          "nativeUsd": 546.6,
          "network": "bsc",
          "pair": "WBNB/USDC",
          "pricesByVenue": [
            {
              "feeBps": 25,
              "price": 546.6,
              "surface": "v2",
              "tvlUsd": 1348000,
              "venue": "pancake"
            },
            {
              "feeBps": 5,
              "price": 546.2,
              "surface": "v3",
              "tvlUsd": 2100000,
              "venue": "pancakeV3:500"
            }
          ],
          "source": "rpc",
          "ts": "2026-07-01T00:00:00.000Z"
        },
        "type": "json"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "method": {
              "enum": [
                "GET"
              ],
              "type": "string"
            },
            "queryParams": {
              "properties": {
                "fee": {
                  "description": "Optional PancakeSwap v3 fee tier to restrict the v3 probe (e.g. 100, 500, 2500, 10000). Omit to probe all v3 tiers + v2.",
                  "type": "string"
                },
                "pair": {
                  "description": "Token pair as SYM/SYM; first symbol is the USD-priceable side (e.g. WBNB/USDC, WBNB/USDT, CAKE/WBNB).",
                  "type": "string"
                }
              },
              "required": [
                "pair"
              ],
              "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://x402.donnyautomation.com/call"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

const res = await fetch("https://x402.donnyautomation.com/call");
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://x402.donnyautomation.com/call")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header