ToolVet
77trust / 100

Onchain Address

by Rooms by Aurmada in Onchain & crypto

x402 APIPassing, checked 1 h ago

Use it when you need a wallet's live ETH and USDC balance on Base or Ethereum, or need to know whether an address is a contract or an EIP-7702 delegated account (for example before sending funds). Also returns code size and nonce. Read live from public RPC nodes at the latest block. Never charged for errors: we settle the payment only after a successful answer.

GET https://rooms.aurmada.com/x402/v1/onchain/address

Last 30 days

All checks passedSome failedAll failedNot checked
Uptime
100%
Response time
334 ms typical, 521 ms slowest 5%
Last check
1 h ago
Next check
any minute now

How to call it

# See the payment challenge (nothing is charged)
curl -i -X GET "https://rooms.aurmada.com/x402/v1/onchain/address?address=0x3304E22DDaa22bCdC5fCa2269b418046aE7b566A&chain=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%2Frooms.aurmada.com%2Fx402%2Fv1%2Fonchain%2Faddress
const res = await pay("https://rooms.aurmada.com/x402/v1/onchain/address?address=0x3304E22DDaa22bCdC5fCa2269b418046aE7b566A&chain=base");
console.log(await res.json());

Example input

{
  "address": "0x3304E22DDaa22bCdC5fCa2269b418046aE7b566A",
  "chain": "base"
}

Example output

{
  "address": "0x3304E22DDaa22bCdC5fCa2269b418046aE7b566A",
  "block": "52400000",
  "chain": "base",
  "chain_id": 8453,
  "code_size_bytes": 0,
  "eip7702_delegated_to": null,
  "is_contract": false,
  "native": {
    "balance": "1.5",
    "symbol": "ETH",
    "wei": "1500000000000000000"
  },
  "nonce": 12,
  "usdc": {
    "balance": "2.5",
    "contract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "decimals": 6,
    "raw": "2500000"
  }
}

Security scan

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

Recent checks

WhenResultHTTPTimePrice
1 h agoPassed402687 ms$0.002
5 h agoPassed402332 ms$0.002
9 h agoPassed402521 ms$0.002
13 h agoPassed402334 ms$0.002
17 h agoPassed402223 ms$0.002
20 h agoPassed402328 ms$0.002
24 h agoPassed402380 ms$0.002
27 h agoPassed402297 ms$0.002
31 h agoPassed402334 ms$0.002
34 h agoPassed402364 ms$0.002
38 h agoPassed402420 ms$0.003
42 h agoPassed402333 ms$0.003
45 h agoPassed402427 ms$0.003
2 days agoPassed402288 ms$0.003
2 days agoPassed402207 ms$0.003

History

12 Oct 2026Price changed from $0.003 to $0.002