ToolVet
78trust / 100

Evm Nft

by SiteCheck in Onchain & crypto

x402 APIPassing, checked 2 h ago

ERC-721 facts for one token: owner, collection name and symbol, tokenURI, and its metadata (name, description, image) when the URI is http(s) or ipfs. The metadata fetch has a 5-second timeout and a 256 KB cap; a failed fetch is reported in metadataNote and does not fail the call.

GET
https://api.sitecheck-api.workers.dev/api/evm/nft
Price
$0.002
per call in USDC
Uptime
100%
last 30 days
Response time
86 ms
972 ms slowest 5%
Last check
Passed
2 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://api.sitecheck-api.workers.dev/api/evm/nft

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://api.sitecheck-api.workers.dev/api/evm/nft?chain=ethereum&contract=0xBC4CA0EdA7647A8aB7C2061c2E118A18a936f13D&tokenId=1

Parameters

ParameterTypeRequiredDescription
chainstringNobase (default), ethereum, arbitrum, optimism or polygon
contractstringYesERC-721 contract, 0x…
tokenIdstringYesToken id, decimal

Example response

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

{
  "chain": "ethereum",
  "checkedAt": "2026-10-14T05:36:06.915Z",
  "collection": {
    "name": "BoredApeYachtClub",
    "symbol": "BAYC"
  },
  "contract": "0xBC4CA0EdA7647A8aB7C2061c2E118A18a936f13D",
  "disclaimer": "Information only, not financial advice.",
  "metadata": {
    "description": null,
    "image": "https://ipfs.filebase.io/ipfs/QmPbxeGcXhYQQNgsC6a36dDyYUcHgMLnGKnF8pVFmGsvqi",
    "name": null
  },
  "owner": "0x46EFbAedc92067E6d60E84ED6395099723252496",
  "source": "https://ethereum-rpc.publicnode.com (eth_call ownerOf, tokenURI, name, symbol); the token URI's metadata",
  "tokenId": "1",
  "tokenUri": "ipfs://QmeSjSinHpPnmXmspMjwiXyN6zS4E9zccariGR3jxcaWtq/1"
}

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://api.sitecheck-api.workers.dev/api/evm/nft?chain=ethereum&contract=0xBC4CA0EdA7647A8aB7C2061c2E118A18a936f13D&tokenId=1'

# 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://api.sitecheck-api.workers.dev/api/evm/nft?chain=ethereum&contract=0xBC4CA0EdA7647A8aB7C2061c2E118A18a936f13D&tokenId=1' \
  | 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%2Fapi.sitecheck-api.workers.dev%2Fapi%2Fevm%2Fnft
const res = await pay("https://api.sitecheck-api.workers.dev/api/evm/nft?chain=ethereum&contract=0xBC4CA0EdA7647A8aB7C2061c2E118A18a936f13D&tokenId=1");
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://api.sitecheck-api.workers.dev/api/evm/nft?chain=ethereum&contract=0xBC4CA0EdA7647A8aB7C2061c2E118A18a936f13D&tokenId=1")
    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
2 h agoPassed402129 ms$0.002
6 h agoPassed402972 ms$0.002
11 h agoPassed40260 ms$0.002
15 h agoPassed40263 ms$0.002
19 h agoPassed40243 ms$0.002
Show 2 older checks
23 h agoPassed402902 ms$0.002
27 h agoPassed40286 ms$0.002