Annuity present/future value · Annuity

import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";

const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);

const res = await fetchWithPay("https://agent402.tools/api/annuity", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    "payment": 100,
    "periods": 10,
    "ratePerPeriod": 0.05,
    "type": "ordinary"
  }),
});
const data = await res.json();

curl -X POST \
  "https://agent402.tools/api/annuity" \
  -H "Content-Type: application/json" \
  -d '{"payment":100,"periods":10,"ratePerPeriod":0.05,"type":"ordinary"}' \
  -H "X-PAYMENT: <signed x402 payment>"

{
  "futureValue": 1257.79,
  "presentValue": 772.17,
  "type": "ordinary"
}