ToolVet
77trust / 100

X402 Seller Check

by x402 Seller Check in Onchain & crypto

x402 APIPassing, checked 47 min ago

x402 proves payment, not trust: an agent handed a URL pays blind, and the payee may be a real service or a burner that takes the USDC and vanishes. Give a url and/or a payTo wallet and get GO/WARN/STOP: is the URL a well-formed 402 resource, does its price match, and is the seller wallet sanctioned, a fresh throwaway, or paying a different address than you expected. Screens the PAYMENT side the protocol drops — not a guarantee the service returns good data.

GET
https://402.com.tr/api/x402/x402-seller-check
Price
$0.04
per call in USDC
Uptime
100%
last 30 days
Response time
504 ms
692 ms slowest 5%
Last check
Passed
47 min 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://402.com.tr/api/x402/x402-seller-check

Each call costs $0.04 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://402.com.tr/api/x402/x402-seller-check?payTo=0x973a31858f4d2125f48c880542da11a2796f12d6&url=https%3A%2F%2F402.com.tr%2Fapi%2Fx402%2Ftoken-risk

Parameters

ParameterTypeRequiredDescription
payTostringNoSeller wallet (optional if url given)
urlstringNox402 endpoint URL

Example response

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

{
  "checkedAt": "2026-10-11T17:13:49.733Z",
  "decision": "GO",
  "payTo": "0x973A31858f4D2125f48C880542DA11a2796f12D6",
  "reasonsCount": 0
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.04.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://402.com.tr/api/x402/x402-seller-check?payTo=0x973a31858f4d2125f48c880542da11a2796f12d6&url=https%3A%2F%2F402.com.tr%2Fapi%2Fx402%2Ftoken-risk'

# 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://402.com.tr/api/x402/x402-seller-check?payTo=0x973a31858f4d2125f48c880542da11a2796f12d6&url=https%3A%2F%2F402.com.tr%2Fapi%2Fx402%2Ftoken-risk' \
  | 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 $0.04 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.04" });
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 $0.04 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2F402.com.tr%2Fapi%2Fx402%2Fx402-seller-check
const res = await pay("https://402.com.tr/api/x402/x402-seller-check?payTo=0x973a31858f4d2125f48c880542da11a2796f12d6&url=https%3A%2F%2F402.com.tr%2Fapi%2Fx402%2Ftoken-risk");
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 $0.04 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.04"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://402.com.tr/api/x402/x402-seller-check?payTo=0x973a31858f4d2125f48c880542da11a2796f12d6&url=https%3A%2F%2F402.com.tr%2Fapi%2Fx402%2Ftoken-risk")
    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
47 min agoPassed402356 ms$0.04
6 h agoPassed402692 ms$0.04
10 h agoPassed402485 ms$0.04
15 h agoPassed402661 ms$0.04
20 h agoPassed402513 ms$0.04
Show 10 older checks
24 h agoPassed402496 ms$0.04
29 h agoPassed402497 ms$0.04
33 h agoPassed402423 ms$0.04
37 h agoPassed402519 ms$0.04
41 h agoPassed402563 ms$0.04
46 h agoPassed402505 ms$0.04
2 days agoPassed402535 ms$0.04
2 days agoPassed402497 ms$0.04
2 days agoPassed402479 ms$0.04
3 days agoPassed402530 ms$0.04

History

11 Oct 2026Price changed from $0.02 to $0.04