ToolVet
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Evm Call

by eth_call read-only contract call in Onchain & crypto

x402 APIPassing, checked 3 h ago

Read-only contract call (eth_call) on Ethereum, Base, Arc or BNB Chain: pass ?to=&data= (hex calldata) and optional &from=, get the returned bytes or the revert reason, at a named block. Nothing is signed or sent.

GET
https://apexfaucet.xyz/api/x402/evm-call
Price
$0.001
per call in USDC
Uptime
100%
last 30 days
Response time
327 ms
3.7 s 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 · Watch with other listings

How to call it

GET https://apexfaucet.xyz/api/x402/evm-call

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://apexfaucet.xyz/api/x402/evm-call?chain=base&data=0x313ce567&from=0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045&to=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Parameters

ParameterTypeRequiredDescription
chainstringNoChain to read: ethereum, base, arc or bnb. Default ethereum. One of: ethereum, base, arc, bnb.
datastringYesHex calldata: 4-byte selector plus ABI-encoded arguments.
fromstringNoOptional caller address.
tostringYesContract to call.

Example response

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

{
  "data": {
    "block": 52559424,
    "blockTime": "2026-10-13T16:16:35.000Z",
    "chain": "base",
    "ok": true,
    "result": "0x0000000000000000000000000000000000000000000000000000000000000006",
    "reverted": false,
    "to": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
  },
  "ok": true,
  "paid": 0.001
}

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://apexfaucet.xyz/api/x402/evm-call?chain=base&data=0x313ce567&from=0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045&to=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://apexfaucet.xyz/api/x402/evm-call?chain=base&data=0x313ce567&from=0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045&to=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%2Fapexfaucet.xyz%2Fapi%2Fx402%2Fevm-call
const res = await pay("https://apexfaucet.xyz/api/x402/evm-call?chain=base&data=0x313ce567&from=0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045&to=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://apexfaucet.xyz/api/x402/evm-call?chain=base&data=0x313ce567&from=0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045&to=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913")
    print(res.status_code, res.text)

Security scan

No findings

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Recent checks

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3 days agoPassed402184 ms$0.001