ToolVet
75trust / 100

Gas

by Multi-chain Gas Snapshot in Onchain & crypto

x402 APIPassing, checked 3 h ago

Live gas snapshot for Base, Ethereum and BNB Smart Chain: gas price, base fee, block utilization, and estimated native cost of a transfer, ERC-20 transfer and swap.

GET
https://automaton-tx-explainer.vercel.app/v1/gas
Price
$0.005
per call in USDC
Uptime
83.3%
last 30 days
Response time
234 ms
427 ms slowest 5%
Last check
Passed
3 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://automaton-tx-explainer.vercel.app/v1/gas

Each call costs $0.005 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://automaton-tx-explainer.vercel.app/v1/gas?chain=all

Parameters

ParameterTypeRequiredDescription
chainstringYesall | base | ethereum | bsc

Example response

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

{
  "chains": [
    {
      "baseFeeGwei": "0.004",
      "chain": "base",
      "estNativeCost": {
        "transfer21k": "0.000000105"
      },
      "gasPriceGwei": "0.005"
    }
  ]
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.005.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://automaton-tx-explainer.vercel.app/v1/gas?chain=all'

# 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://automaton-tx-explainer.vercel.app/v1/gas?chain=all' \
  | 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 $0.005 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.005" });
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 $0.005 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fautomaton-tx-explainer.vercel.app%2Fv1%2Fgas
const res = await pay("https://automaton-tx-explainer.vercel.app/v1/gas?chain=all");
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 $0.005 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.005"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://automaton-tx-explainer.vercel.app/v1/gas?chain=all")
    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
3 h agoPassed402427 ms$0.005
8 h agoPassed402216 ms$0.005
13 h agoPassed402224 ms$0.005
18 h agoPassed402234 ms$0.005
23 h agoPassed402248 ms$0.005
Show 1 older checks
27 h agoExpected HTTP 402, got 502502241 ms-