ToolVet
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Receipt

by Transaction Receipt API in Onchain & crypto

x402 APIPassing, checked 23 min ago

Live transaction receipt by hash via `eth_getTransactionReceipt`: success/failed status, block number, from/to, created contract address, gas used, cumulative gas, effective gas price (wei + gwei), tx type and the emitted event logs (capped). Complements `tx` (which reads the transaction itself). Returns `found:false` for unknown/pending hashes. Reads live on-chain data with automatic endpoint fallback.

POST
https://chain.openverbs.com/v1/receipt
Price
$0.003
per call in USDC
Uptime
100%
last 30 days
Response time
541 ms
732 ms slowest 5%
Last check
Passed
23 min ago, next in 5 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

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

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/receipt
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/receipt' \
  -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/receipt' \
  -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%2Freceipt&method=POST
const res = await pay("https://chain.openverbs.com/v1/receipt", {
  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/receipt",
        json={
            "chain": "ethereum",
            "hash": "0x9ef1a5b4082c4f1f6bb2f2f67fb64115bd10815d6c20a2d1b5f9f5ddf8f8f8f8",
        },
    )
    print(res.status_code, res.text)

Security scan

No findings

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Recent checks

WhenResultHTTPTimePrice
23 min agoPassed402560 ms$0.003
6 h agoPassed402534 ms$0.003
11 h agoPassed402627 ms$0.003
15 h agoPassed402606 ms$0.003
20 h agoPassed402171 ms$0.003
Show 10 older checks
25 h agoPassed402328 ms$0.003
30 h agoPassed402732 ms$0.003
34 h agoPassed402541 ms$0.003
39 h agoPassed402167 ms$0.003
43 h agoPassed402572 ms$0.003
47 h agoPassed402504 ms$0.003
2 days agoPassed402501 ms$0.003
2 days agoPassed402499 ms$0.003
3 days agoPassed402561 ms$0.003
3 days agoPassed402171 ms$0.003