Calculators Loan Payment Calculator

Last 30 days

Uptime

100%

Response time

170 ms typical, 170 ms slowest 5%

Last check

2 min ago

Next check

in 27 min

How to call it

# See the payment challenge (nothing is charged)
curl -i -X GET "https://agenttools-hub.vercel.app/api/v1/calculators/loan-payment-calculator?annualRate=4.5&principal=300000&years=30"

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%2Fcalculators%2Floan-payment-calculator
const res = await pay("https://agenttools-hub.vercel.app/api/v1/calculators/loan-payment-calculator?annualRate=4.5&principal=300000&years=30");
console.log(await res.json());

Example input

{
  "annualRate": 4.5,
  "principal": 300000,
  "years": 30
}

Example output

{
  "result": {
    "answer": "1,520.06 / month",
    "answerLabel": "360 monthly payments",
    "details": [
      {
        "label": "Total repaid",
        "value": "547,220.13"
      },
      {
        "label": "Total interest",
        "value": "247,220.13"
      },
      {
        "label": "Interest as % of principal",
        "value": "82.41%"
      }
    ],
    "steps": [
      "r = 4.5% ÷ 12 = 0.375% monthly",
      "n = 30 × 12 = 360 payments",
      "M = P · r · (1+r)ⁿ ÷ ((1+r)ⁿ − 1) = 1,520.06"
    ],
    "value": 1520.055929
  },
  "tool": "loan-payment-calculator"
}

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