DEX price quote across 7 chains (Ethereum, Base, Arbitrum, Optimism, Polygon, BNB, Unichai

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0xA0F9C380ad1E1be09046319fd907335B2B452B37",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "2000",
    "maxTimeoutSeconds": 300
  }
]

{
  "bazaar": {
    "info": {
      "input": {
        "method": "GET",
        "queryParams": {
          "amount": "1",
          "buy": "USDC",
          "chain": "8453",
          "sell": "ETH"
        },
        "type": "http"
      },
      "output": {
        "example": {
          "buy": "2079.54 USDC",
          "chainId": 8453,
          "gasFeeUSD": "0.0024",
          "gasLimit": "394000",
          "price": "1 ETH = 2079.54 USDC",
          "routing": "CLASSIC",
          "sell": "1 ETH"
        },
        "type": "json"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "method": {
              "enum": [
                "GET"
              ],
              "type": "string"
            },
            "queryParams": {
              "properties": {
                "amount": {
                  "description": "Amount to sell (human-readable, e.g. '1' for 1 ETH)",
                  "type": "string"
                },
                "buy": {
                  "description": "Token to buy (ETH, USDC, WBTC, or contract address)",
                  "type": "string"
                },
                "chain": {
                  "description": "Chain name or ID (e.g. 'base', '8453', 'arbitrum', '42161')",
                  "type": "string"
                },
                "operator": {
                  "description": "Optional operator address for browser auth bypass",
                  "type": "string"
                },
                "sell": {
                  "description": "Token to sell (ETH, USDC, WBTC, or contract address)",
                  "type": "string"
                },
                "sig": {
                  "description": "Optional EIP-191 signature for browser auth bypass",
                  "type": "string"
                },
                "slippage": {
                  "description": "Optional slippage tolerance in basis points (e.g. '100' for 1%)",
                  "type": "string"
                },
                "ts": {
                  "description": "Optional signature timestamp for browser auth bypass",
                  "type": "string"
                },
                "vault": {
                  "description": "Optional Rigoblock vault address for gas estimation",
                  "type": "string"
                }
              },
              "required": [
                "sell",
                "buy",
                "amount"
              ],
              "type": "object"
            },
            "type": {
              "const": "http",
              "type": "string"
            }
          },
          "required": [
            "type",
            "method"
          ],
          "type": "object"
        },
        "output": {
          "properties": {
            "example": {
              "properties": {
                "buy": {
                  "type": "string"
                },
                "chainId": {
                  "type": "integer"
                },
                "gasFeeUSD": {
                  "type": "string"
                },
                "gasLimit": {
                  "type": "string"
                },
                "price": {
                  "type": "string"
                },
                "routing": {
                  "type": "string"
                },
                "sell": {
                  "type": "string"
                }
              },
              "type": "object"
            },
            "type": {
              "type": "string"
            }
          },
          "required": [
            "type"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  }
}

curl "https://trader.rigoblock.com/api/quote"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

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