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Wallet Balance

by wallet-balance-checker in Onchain & crypto

x402 APIPassing, checked 59 min ago

Read native coin and USDC balances for any EVM wallet on Base, Ethereum, Polygon, Arbitrum or Optimism, with atomic amounts and current block. No RPC key or account. Try GET /wallet-balance/sample.

GET https://x402.agentindex.world/wallet-balance

Last 30 days

All checks passedSome failedAll failedNot checked
Uptime
100%
Response time
76 ms typical, 76 ms slowest 5%
Last check
59 min ago
Next check
any minute now

How to call it

# See the payment challenge (nothing is charged)
curl -i -X GET "https://x402.agentindex.world/wallet-balance?address=0xb3F32bdfe8D07825BC0D7387295aB1D7559BA69d&network=base"
import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { ExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client().register(
  "eip155:8453",
  new ExactEvmScheme(privateKeyToAccount(process.env.AGENT_KEY)),
);
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? Preflight it first for $0.005:
// GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fx402.agentindex.world%2Fwallet-balance
const res = await pay("https://x402.agentindex.world/wallet-balance?address=0xb3F32bdfe8D07825BC0D7387295aB1D7559BA69d&network=base");
console.log(await res.json());

Example input

{
  "address": "0xb3F32bdfe8D07825BC0D7387295aB1D7559BA69d",
  "network": "base"
}

Example output

{
  "address": "0xb3F32bdfe8D07825BC0D7387295aB1D7559BA69d",
  "block_number": 51500000,
  "native": {
    "balance": 0.001,
    "balance_wei": "1000000000000000",
    "symbol": "ETH"
  },
  "network": {
    "caip2": "eip155:8453",
    "key": "base",
    "name": "Base"
  },
  "usdc": {
    "balance": 1.25,
    "balance_atomic": "1250000",
    "contract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "decimals": 6
  }
}

Security scan

  • No findings. We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks

WhenResultHTTPTimePrice
59 min agoPassed40276 ms$0.001
6 h agoPassed402248 ms$0.001