Crypto Gas Fee Calculator

Last 30 days

Uptime

13.3%

Response time

166 ms typical, 166 ms slowest 5%

Last check

1 h ago: Expected HTTP 402, got 308

Next check

any minute now

How to call it

# See the payment challenge (nothing is charged)
curl -i -X GET "https://agenttools-hub.vercel.app/api/v1/crypto/gas-fee-calculator?ethPriceUsd=3000&gasUnits=21000&gweiPrice=10"

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%2Fagenttools-hub.vercel.app%2Fapi%2Fv1%2Fcrypto%2Fgas-fee-calculator
const res = await pay("https://agenttools-hub.vercel.app/api/v1/crypto/gas-fee-calculator?ethPriceUsd=3000&gasUnits=21000&gweiPrice=10");
console.log(await res.json());

Example input

{
  "ethPriceUsd": 3000,
  "gasUnits": 21000,
  "gweiPrice": 10
}

Example output

{
  "result": {
    "answer": "$0.63",
    "answerLabel": "Transaction fee (USD)",
    "details": [
      {
        "label": "Fee in ETH",
        "value": "0.000210000000000000"
      },
      {
        "label": "Fee in wei (exact)",
        "value": "210000000000000"
      },
      {
        "label": "Fee in gwei",
        "value": "210000"
      },
      {
        "label": "ETH price used",
        "value": "$3,000"
      }
    ],
    "steps": [
      "wei = 21000 gas × 10 gwei × 10⁹ = 210000000000000",
      "ETH = 0.000210000000000000 · USD = 0.000210000000000000 × $3,000 = $0.63"
    ],
    "value": 0.63
  },
  "tool": "gas-fee-calculator"
}

Security scan

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