Native coin and ERC-20 token balance for any wallet address on Base, Polygon, Arbitrum, Op

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0xCa03Fb4b1D2f66f5a83A5cA91021b874ac4a34a3",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "2000",
    "maxTimeoutSeconds": 120
  },
  {
    "scheme": "exact",
    "network": "eip155:137",
    "payTo": "0xCa03Fb4b1D2f66f5a83A5cA91021b874ac4a34a3",
    "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
    "amount": "2000",
    "maxTimeoutSeconds": 120
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "payTo": "CTmExzd1k8DNcmmuWGVCGoxsBshNcwFFhCe65QG57Vhd",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "2000",
    "maxTimeoutSeconds": 120
  }
]

{
  "bazaar": {
    "info": {
      "input": {
        "method": "GET",
        "queryParams": {
          "address": "0x0000000000000000000000000000000000000000",
          "chain": "base"
        },
        "type": "http"
      },
      "output": {
        "example": {
          "address": "0x…",
          "chain": "base",
          "native": {
            "amount": "0.000001",
            "symbol": "ETH",
            "wei": "1000000"
          }
        },
        "type": "json"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "properties": {
            "method": {
              "enum": [
                "GET"
              ],
              "type": "string"
            },
            "queryParams": {
              "properties": {
                "address": {
                  "type": "string"
                },
                "chain": {
                  "type": "string"
                }
              },
              "type": "object"
            },
            "type": {
              "enum": [
                "http"
              ],
              "type": "string"
            }
          },
          "required": [
            "type",
            "method",
            "queryParams"
          ],
          "type": "object"
        },
        "output": {
          "properties": {
            "example": {
              "type": "object"
            },
            "type": {
              "enum": [
                "json"
              ],
              "type": "string"
            }
          },
          "required": [
            "type"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  }
}

curl "https://multichain-rpc.clankerceo.workers.dev/balance"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

const res = await fetch("https://multichain-rpc.clankerceo.workers.dev/balance");
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://multichain-rpc.clankerceo.workers.dev/balance")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header