ToolVet
78trust / 100

Base Tx

by Base Transaction in Onchain & crypto

x402 APIPassing, checked 5 h ago

🆕 A Base transaction by hash, unedited: from, to, value in wei and ETH, nonce, gas, fee caps, type, and the 4-byte method selector with the calldata size. Flags a contract creation (null to) and a still-pending transaction (null block) rather than leaving you to infer either. Unknown hashes answer found:false, not an error.

GET
https://402.com.tr/api/x402/base-tx
Price
$0.002
per call in USDC
Uptime
100%
last 30 days
Response time
488 ms
699 ms slowest 5%
Last check
Passed
5 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://402.com.tr/api/x402/base-tx

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/base-tx?hash=0x68fdf10f8eb842afcddf79b2a779ed78e5be35d698e95cee1966f1787eb02b5e

Parameters

ParameterTypeRequiredDescription
hashstringYesTransaction hash

Example response

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

{
  "blockNumber": 49707346,
  "chain": "base",
  "checkedAt": "2026-10-11T17:16:34.579Z",
  "found": true,
  "from": "0xE74817F4cDC15844314812B2271276E64e890fAE",
  "hash": "0x68fdf10f8eb842afcddf79b2a779ed78e5be35d698e95cee1966f1787eb02b5e",
  "isContractCreation": false,
  "pending": false
}

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/base-tx?hash=0x68fdf10f8eb842afcddf79b2a779ed78e5be35d698e95cee1966f1787eb02b5e'

# 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/base-tx?hash=0x68fdf10f8eb842afcddf79b2a779ed78e5be35d698e95cee1966f1787eb02b5e' \
  | 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%2Fbase-tx
const res = await pay("https://402.com.tr/api/x402/base-tx?hash=0x68fdf10f8eb842afcddf79b2a779ed78e5be35d698e95cee1966f1787eb02b5e");
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/base-tx?hash=0x68fdf10f8eb842afcddf79b2a779ed78e5be35d698e95cee1966f1787eb02b5e")
    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 agoPassed402487 ms$0.002
9 h agoPassed402639 ms$0.002
14 h agoPassed402435 ms$0.002
18 h agoPassed402806 ms$0.002
22 h agoPassed402699 ms$0.002
Show 10 older checks
26 h agoPassed402617 ms$0.002
31 h agoPassed402413 ms$0.002
35 h agoPassed402579 ms$0.002
39 h agoPassed402525 ms$0.002
43 h agoPassed402556 ms$0.002
2 days agoPassed402620 ms$0.002
2 days agoPassed402393 ms$0.002
2 days agoPassed402543 ms$0.002
3 days agoPassed402480 ms$0.002
3 days agoPassed402488 ms$0.002