ToolVet
77trust / 100

Gas

by Agent Hub in Onchain & crypto

x402 APIPassing, checked 2 h ago

Live gas prices on Ethereum, Base, Arbitrum, Optimism and Polygon: gas price, next base fee, slow/normal/fast priority tips, and USD cost of a simple transfer.

GET https://agents.torbrooknews.com/v1/gas

Last 30 days

All checks passedSome failedAll failedNot checked

Status and outage history · Atom feed

Uptime
100%
Response time
684 ms typical, 828 ms slowest 5%
Last check
2 h ago
Next check
any minute now

How to call it

GET https://agents.torbrooknews.com/v1/gas

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://agents.torbrooknews.com/v1/gas?chains=ethereum%2Cbase

Parameters

ParameterTypeRequiredDescription
chainsstringNoComma list; default all five

Example response

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

{
  "chains": [
    {
      "base_fee_next_gwei": 0.005,
      "chain": "base",
      "gas_price_gwei": 0.006,
      "priority_fee_gwei": {
        "fast": 0.01,
        "normal": 0.001,
        "slow": 0.0001
      },
      "transfer_cost_usd": 0.0003
    }
  ]
}

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://agents.torbrooknews.com/v1/gas?chains=ethereum%2Cbase'

# 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://agents.torbrooknews.com/v1/gas?chains=ethereum%2Cbase' \
  | 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%2Fagents.torbrooknews.com%2Fv1%2Fgas
const res = await pay("https://agents.torbrooknews.com/v1/gas?chains=ethereum%2Cbase");
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://agents.torbrooknews.com/v1/gas?chains=ethereum%2Cbase")
    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
2 h agoPassed402828 ms$0.002
6 h agoPassed402801 ms$0.002
10 h agoPassed402832 ms$0.002
14 h agoPassed402221 ms$0.002
18 h agoPassed402491 ms$0.002
21 h agoPassed402684 ms$0.002
25 h agoPassed402145 ms$0.002
29 h agoPassed402708 ms$0.002
32 h agoPassed40250 ms$0.002
36 h agoPassed402733 ms$0.002
45 h agoPassed40236 ms$0.001

History

13 Oct 2026Price changed from $0.001 to $0.002