ToolVet
77trust / 100

Tx

by On-chain Transaction Lookup in Onchain & crypto

x402 APIPassing, checked 34 min ago

Live status and details of a transaction by hash: success/failed/pending, from/to, value (wei + ether), nonce, block number, gas used, effective gas price and any created contract address. Returns `found:false` for unknown hashes. Reads live on-chain data with automatic endpoint fallback.

POST
https://chain.openverbs.com/v1/tx
Price
$0.003
per call in USDC
Uptime
100%
last 30 days
Response time
558 ms
681 ms slowest 5%
Last check
Passed
34 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

POST https://chain.openverbs.com/v1/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.

POST https://chain.openverbs.com/v1/tx
content-type: application/json

{
  "chain": "ethereum",
  "hash": "0x9ef1a5b4082c4f1f6bb2f2f67fb64115bd10815d6c20a2d1b5f9f5ddf8f8f8f8"
}

Parameters

ParameterTypeRequiredDescription
chainstringNoEVM chain to query. One of: ethereum, base, arbitrum, optimism, polygon. Default "ethereum". One of: ethereum, base, arbitrum, optimism, polygon.
hashstringYes32-byte transaction hash.

Example response

The listing has no example response.

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 -X POST 'https://chain.openverbs.com/v1/tx' \
  -H 'content-type: application/json' \
  --data-raw '{"chain":"ethereum","hash":"0x9ef1a5b4082c4f1f6bb2f2f67fb64115bd10815d6c20a2d1b5f9f5ddf8f8f8f8"}'

# 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 - -X POST 'https://chain.openverbs.com/v1/tx' \
  -H 'content-type: application/json' \
  --data-raw '{"chain":"ethereum","hash":"0x9ef1a5b4082c4f1f6bb2f2f67fb64115bd10815d6c20a2d1b5f9f5ddf8f8f8f8"}' \
  | 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.openverbs.com%2Fv1%2Ftx&method=POST
const res = await pay("https://chain.openverbs.com/v1/tx", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "chain": "ethereum",
    "hash": "0x9ef1a5b4082c4f1f6bb2f2f67fb64115bd10815d6c20a2d1b5f9f5ddf8f8f8f8"
  }),
});
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.post(
        "https://chain.openverbs.com/v1/tx",
        json={
            "chain": "ethereum",
            "hash": "0x9ef1a5b4082c4f1f6bb2f2f67fb64115bd10815d6c20a2d1b5f9f5ddf8f8f8f8",
        },
    )
    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
34 min agoPassed402552 ms$0.003
6 h agoPassed4021.6 s$0.003
11 h agoPassed402522 ms$0.003
15 h agoPassed402545 ms$0.003
20 h agoPassed402595 ms$0.003
Show 10 older checks
25 h agoPassed402560 ms$0.003
30 h agoPassed402507 ms$0.003
34 h agoPassed402576 ms$0.003
39 h agoPassed402579 ms$0.003
43 h agoPassed402177 ms$0.003
47 h agoPassed402596 ms$0.003
2 days agoPassed402552 ms$0.003
2 days agoPassed402565 ms$0.003
3 days agoPassed402641 ms$0.003
3 days agoPassed402558 ms$0.003