ToolVet
80trust / 100

Tx

by Onchain Query API in Onchain & crypto

x402 APIPassing, checked 1 h ago

Transaction lookup and decode on any major EVM chain. Turns a raw tx hash into agent-readable facts: success or failure status, block number, sender and recipient, native value transferred, gas used, fee in native token and USD, and every ERC-20 transfer decoded with token symbol, decimals and human-readable amount. Returns found=false for an unknown hash instead of erroring.

GET
https://chain.cyberwarex.com/tx
Price
$0.003
per call in USDC
Uptime
100%
last 30 days
Response time
278 ms
534 ms slowest 5%
Last check
Passed
1 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://chain.cyberwarex.com/tx

Each call costs $0.003 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://chain.cyberwarex.com/tx?chain=base&hash=0x2f1c8b3d4e5a6f708192a3b4c5d6e7f8091a2b3c4d5e6f708192a3b4c5d6e7f8

Parameters

ParameterTypeRequiredDescription
chainstringNoEVM chain to query. One of: base, ethereum, arbitrum, optimism, polygon. Default: "base".
hashstringYesTransaction hash to look up.

Example response

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

Example response, 26 lines
{
  "block": 21874431,
  "chain": "base",
  "erc20_transfers": [
    {
      "from": "0x742d35Cc6634C0532925a3b844Bc454e4438f44e",
      "symbol": "USDC",
      "to": "0x1F98431c8aD98523631AE4a59f267346ea31F984",
      "token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "value": 25,
      "value_raw": "25000000"
    }
  ],
  "fee": {
    "native": 5.34e-7,
    "usd": 0.00171
  },
  "found": true,
  "from": "0x742d35Cc6634C0532925a3b844Bc454e4438f44e",
  "gas_used": 64231,
  "hash": "0x2f1c8b3d4e5a6f708192a3b4c5d6e7f8091a2b3c4d5e6f708192a3b4c5d6e7f8",
  "logs_count": 3,
  "status": "success",
  "to": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "value_native": 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 $0.003.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://chain.cyberwarex.com/tx?chain=base&hash=0x2f1c8b3d4e5a6f708192a3b4c5d6e7f8091a2b3c4d5e6f708192a3b4c5d6e7f8'

# 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://chain.cyberwarex.com/tx?chain=base&hash=0x2f1c8b3d4e5a6f708192a3b4c5d6e7f8091a2b3c4d5e6f708192a3b4c5d6e7f8' \
  | 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 $0.003 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.003" });
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 $0.003 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fchain.cyberwarex.com%2Ftx
const res = await pay("https://chain.cyberwarex.com/tx?chain=base&hash=0x2f1c8b3d4e5a6f708192a3b4c5d6e7f8091a2b3c4d5e6f708192a3b4c5d6e7f8");
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 $0.003 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.003"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://chain.cyberwarex.com/tx?chain=base&hash=0x2f1c8b3d4e5a6f708192a3b4c5d6e7f8091a2b3c4d5e6f708192a3b4c5d6e7f8")
    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
1 h agoPassed402157 ms$0.003
6 h agoPassed402347 ms$0.003
10 h agoPassed402301 ms$0.003
15 h agoPassed402192 ms$0.003
19 h agoPassed402159 ms$0.003
Show 10 older checks
23 h agoPassed402227 ms$0.003
27 h agoPassed402188 ms$0.003
31 h agoPassed402133 ms$0.003
35 h agoPassed402144 ms$0.003
39 h agoPassed402154 ms$0.003
43 h agoPassed402152 ms$0.003
47 h agoPassed402119 ms$0.003
2 days agoPassed402275 ms$0.003
2 days agoPassed402178 ms$0.003
2 days agoPassed402311 ms$0.003