ToolVet
78trust / 100

Erc20 Balance

by signals.edge.report in Onchain & crypto

x402 APIPassing, checked 1 h ago

Get ERC20 token balance for any wallet and token contract on Base (or Ethereum). Returns balance, decimals, and symbol via balanceOf. Use for live ERC20 holdings checks without an API key.

GET
https://signals.edge.report/v1/erc20-balance
Price
$0.001
per call in USDC
Uptime
100%
last 30 days
Response time
406 ms
630 ms slowest 5%
Last check
Passed
1 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://signals.edge.report/v1/erc20-balance

Each call costs $0.001 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://signals.edge.report/v1/erc20-balance?address=0x0000000000000000000000000000000000000001&chain=base&token=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Parameters

ParameterTypeRequiredDescription
addressstringYesWallet address to read ERC20 balance for
chainstringNoChain: base (default) or ethereum
tokenstringYesERC20 token contract address

Example response

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

{
  "balance": "12.5",
  "balanceRaw": "12500000",
  "chain": "base",
  "decimals": 6,
  "product": "edge-signals-erc20-balance",
  "symbol": "USDC",
  "token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "wallet": "0x0000000000000000000000000000000000000001"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.001.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://signals.edge.report/v1/erc20-balance?address=0x0000000000000000000000000000000000000001&chain=base&token=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913'

# 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://signals.edge.report/v1/erc20-balance?address=0x0000000000000000000000000000000000000001&chain=base&token=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913' \
  | 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 $0.001 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.001" });
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 $0.001 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fsignals.edge.report%2Fv1%2Ferc20-balance
const res = await pay("https://signals.edge.report/v1/erc20-balance?address=0x0000000000000000000000000000000000000001&chain=base&token=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913");
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 $0.001 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.001"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://signals.edge.report/v1/erc20-balance?address=0x0000000000000000000000000000000000000001&chain=base&token=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913")
    print(res.status_code, res.text)

Security scan

No findings

We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks

WhenResultHTTPTimePrice
1 h agoPassed402324 ms$0.001
6 h agoPassed402453 ms$0.001
10 h agoPassed402406 ms$0.001
14 h agoPassed402495 ms$0.001
18 h agoPassed402630 ms$0.001
Show 10 older checks
22 h agoPassed402339 ms$0.001
26 h agoPassed402389 ms$0.001
30 h agoPassed402511 ms$0.001
33 h agoPassed402422 ms$0.001
38 h agoPassed402563 ms$0.001
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2 days agoPassed402144 ms$0.001