Gas

Last 30 days

Uptime

100%

Response time

340 ms typical, 340 ms slowest 5%

Last check

3 h ago

Next check

any minute now

How to call it

# See the payment challenge (nothing is charged)
curl -i -X GET "https://base-gas-x402-production.up.railway.app/gas?gasLimit=21000"

import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { ExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client().register(
  "eip155:8453",
  new ExactEvmScheme(privateKeyToAccount(process.env.AGENT_KEY)),
);
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? Preflight it first for $0.005:
// GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fbase-gas-x402-production.up.railway.app%2Fgas
const res = await pay("https://base-gas-x402-production.up.railway.app/gas?gasLimit=21000");
console.log(await res.json());

Example input

{
  "gasLimit": 21000
}

Example output

{
  "baseFeePerGas": "0.012",
  "blockNumber": "12345678",
  "chain": "base-mainnet",
  "chainId": 8453,
  "estimatedTransferCost": {
    "eth": "0.000000294",
    "gasLimit": 21000,
    "gwei": "294"
  },
  "fetchedAt": "2026-06-22T00:00:00.000Z",
  "gasPrice": "0.014",
  "priorityFeePerGas": {
    "high": "0.004",
    "low": "0.001",
    "medium": "0.002"
  }
}

Security scan

• No findings. We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

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