ToolVet
72trust / 100

Contract Info

by Contract Identity in Onchain & crypto

x402 APIPassing, checked 5 h ago

🆕 What sits at a Base address: contract or plain wallet, and if a contract, whether it declares ERC-721 or ERC-1155 via ERC-165 or carries the ERC-20 shape, plus name, symbol, decimals and code size. Interface support is read from the contract's own declaration first and only inferred when there is none — the ordering matters, because NFTs answer totalSupply() too.

GET
https://402.com.tr/api/x402/contract-info
Price
$0.002
per call in USDC
Uptime
100%
last 30 days
Response time
431 ms
649 ms slowest 5%
Last check
Passed
5 h ago, next in 41 min

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/contract-info

Each call costs $0.002 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/contract-info?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Parameters

ParameterTypeRequiredDescription
addressstringYesContract address

Example response

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

{
  "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "chain": "base",
  "checkedAt": "2026-10-08T08:48:20.232Z",
  "decimals": 6,
  "isContract": true,
  "standard": "ERC-20",
  "symbol": "USDC",
  "totalSupplyRaw": "4393615214196661"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.002.

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/contract-info?address=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://402.com.tr/api/x402/contract-info?address=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 $0.002 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.002" });
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 $0.002 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2F402.com.tr%2Fapi%2Fx402%2Fcontract-info
const res = await pay("https://402.com.tr/api/x402/contract-info?address=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 $0.002 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.002"})
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/contract-info?address=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
5 h agoPassed402431 ms$0.002
15 h agoPassed402358 ms$0.002
26 h agoPassed402430 ms$0.002
35 h agoPassed402431 ms$0.002
39 h agoPassed402371 ms$0.002
Show 10 older checks
44 h agoPassed402364 ms$0.002
2 days agoPassed402463 ms$0.002
2 days agoPassed402439 ms$0.002
2 days agoPassed402502 ms$0.002
3 days agoPassed402517 ms$0.002
3 days agoPassed402484 ms$0.002
3 days agoPassed402363 ms$0.002
3 days agoPassed402382 ms$0.002
3 days agoPassed402486 ms$0.002
3 days agoPassed402406 ms$0.002