Q

Quartermaster Balance Check · Balance

by Quartermaster Balance Check

GETBaseSolana

$0.001

per call · USD Coin on Base

Check ETH and USDC (or any ERC-20) balance of an address on Base — pre-flight funding checks for payments and settlement.

Endpoint

GET https://quartermaster.surewhynot.app/v1/balance

3

Calls / 30d

3

Unique payers / 30d

Sep 9

Last called

exact

Payment scheme

Call this service

TypeScript · @x402/fetch
import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";

const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);

const res = await fetchWithPay("https://quartermaster.surewhynot.app/v1/balance", {
  method: "GET",
});
const data = await res.json();
cURL
curl -X GET \
  "https://quartermaster.surewhynot.app/v1/balance?address=0xc2a36e22ecbf353086cf83e7beea78bc28a64083&token=usdc" \
  -H "X-PAYMENT: <signed x402 payment>"

Example response

{
  "address": "0xc2a3...4083",
  "eth": "0.0031",
  "network": "base",
  "token": {
    "address": "0x8335...2913",
    "balance": "12.5",
    "decimals": 6,
    "symbol": "USDC"
  }
}

Payment details

Pay to0x5253666c40432f009ebd99908b9cd2a7fd1019cb
AssetUSD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913
NetworksBase, Solana
Schemesexact

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