ToolVet
80trust / 100

Wallet Balances

by onchain-wallet-balances in Onchain & crypto

x402 APIPassing, checked 3 h ago

Native-coin balance + ERC-20 token balances (raw + human) for any address on Base, Ethereum, Arbitrum, Optimism, Polygon or BNB (default Base). On Base pass token symbols or 0x addresses (or a default common set); on other networks pass explicit 0x token addresses.

GET
https://api.agentstools.dev/wallet/balances
Price
$0.005
per call in USDC
Uptime
100%
last 30 days
Response time
27 ms
233 ms slowest 5%
Last check
Passed
3 h ago, next any minute now

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

Status and outage history · Atom feed

How to call it

GET https://api.agentstools.dev/wallet/balances

Each call costs $0.005 in USDC on Base, paid with the request over x402.

Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.

Example request

From the listing.

GET https://api.agentstools.dev/wallet/balances?address=0x2d3af92Df6129878509F152E531E1beC2b34C423&network=base&usd=false

Parameters

ParameterTypeRequiredDescription
addressstringYesWallet address (0x..)
networkstringNoEVM network to read from (default base) One of: base, ethereum, arbitrum, optimism, polygon, bnb.
tokensarray of stringNoBase: token symbols or 0x addresses (default common set, max 25). Other networks: explicit 0x addresses only
usdbooleanNoAdd best-effort USD values (Base only)

Example response

The provider's example. We can't check it without paying.

{
  "address": "0x2d3af92Df6129878509F152E531E1beC2b34C423",
  "chain": "eip155:8453",
  "native": {
    "balance": 0.12,
    "balance_raw": "...",
    "symbol": "ETH"
  },
  "network": "base",
  "tokens": [
    {
      "balance": 42.5,
      "balance_raw": "...",
      "token": "USDC"
    }
  ]
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.005.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://api.agentstools.dev/wallet/balances?address=0x2d3af92Df6129878509F152E531E1beC2b34C423&network=base&usd=false'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - 'https://api.agentstools.dev/wallet/balances?address=0x2d3af92Df6129878509F152E531E1beC2b34C423&network=base&usd=false' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode
JavaScript: pay and call
// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.005 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.005" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.005 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.agentstools.dev%2Fwallet%2Fbalances
const res = await pay("https://api.agentstools.dev/wallet/balances?address=0x2d3af92Df6129878509F152E531E1beC2b34C423&network=base&usd=false");
console.log(res.status, await res.text());
Python: pay and call
# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.005 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.005"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://api.agentstools.dev/wallet/balances?address=0x2d3af92Df6129878509F152E531E1beC2b34C423&network=base&usd=false")
    print(res.status_code, res.text)

Security scan

No findings

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Recent checks

WhenResultHTTPTimePrice
3 h agoPassed40227 ms$0.005
7 h agoPassed40226 ms$0.005
11 h agoPassed40227 ms$0.005
15 h agoPassed40227 ms$0.005
20 h agoPassed40222 ms$0.005
Show 10 older checks
24 h agoPassed40280 ms$0.005
28 h agoPassed40227 ms$0.005
32 h agoPassed40251 ms$0.005
36 h agoPassed40284 ms$0.005
40 h agoPassed40278 ms$0.005
43 h agoPassed40299 ms$0.005
47 h agoPassed40227 ms$0.005
2 days agoPassed40226 ms$0.005
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2 days agoPassed40223 ms$0.005