ToolVet
77trust / 100

Arc Read

by Contract read (view call), Arc in Onchain & crypto

x402 APIPassing, checked 4 h ago

Contract read on Arc: one view call on any contract, decoded, with block and time. ?address=0x...&fn=function balanceOf(address) view returns (uint256)&args=["0x..."] (args a JSON array, optional; &block=N for a past block). For agents that check owner, paused, allowance or a balance before acting, without running an RPC. Only view/pure functions; a revert, a non-contract or a bad signature is refused before payment.

GET
https://apexfaucet.xyz/api/x402/arc-read
Price
$0.001
per call in USDC
Uptime
100%
last 30 days
Response time
364 ms
654 ms slowest 5%
Last check
Passed
4 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/arc-read

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/arc-read?address=0x59933F316417C89d9dC5107B30f08C99b774Ea9D&fn=function+symbol%28%29+view+returns+%28string%29

Parameters

ParameterTypeRequiredDescription
addressstringYesThe contract to read.
fnstringYesA view/pure function signature, e.g. function balanceOf(address) view returns (uint256).

Example response

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

{
  "data": {
    "address": "0x59933f316417c89d9dc5107b30f08c99b774ea9d",
    "args": [],
    "block": 25139321,
    "chain": "Arc mainnet (5042)",
    "function": "symbol()",
    "method": "eth_call on Arc mainnet at the block shown; view/pure functions only; integers are returned as strings.",
    "ok": true,
    "result": "APEX",
    "timestamp": "2026-10-09T22:06:45.000Z"
  },
  "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/arc-read?address=0x59933F316417C89d9dC5107B30f08C99b774Ea9D&fn=function+symbol%28%29+view+returns+%28string%29'

# 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/arc-read?address=0x59933F316417C89d9dC5107B30f08C99b774Ea9D&fn=function+symbol%28%29+view+returns+%28string%29' \
  | 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%2Farc-read
const res = await pay("https://apexfaucet.xyz/api/x402/arc-read?address=0x59933F316417C89d9dC5107B30f08C99b774Ea9D&fn=function+symbol%28%29+view+returns+%28string%29");
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/arc-read?address=0x59933F316417C89d9dC5107B30f08C99b774Ea9D&fn=function+symbol%28%29+view+returns+%28string%29")
    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
4 h agoPassed402330 ms$0.001
9 h agoPassed402364 ms$0.001
14 h agoPassed402375 ms$0.001
19 h agoPassed402278 ms$0.001
23 h agoPassed402151 ms$0.001
Show 10 older checks
28 h agoPassed402380 ms$0.001
32 h agoPassed402260 ms$0.001
36 h agoPassed402330 ms$0.001
40 h agoPassed402431 ms$0.001
44 h agoPassed402297 ms$0.001
2 days agoPassed402495 ms$0.001
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3 days agoPassed402654 ms$0.001