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Fire Calculator

by Sindri in Markets & finance

x402 APIPassing, checked 2 h ago

FIRE (Financial Independence, Retire Early) calculator. Projects year-by-year net worth growth to determine how many years until your portfolio can sustainably fund retirement spending at a given safe withdrawal rate — precise compound-growth simulation an LLM cannot reliably run mentally. incomeGrowthRate is deflated by inflationRate internally. Past retirementAge the simulation draws down retirementAnnualSpending with no further income.

POST https://ppu43fkyhimq5fiqpmo42eh5ri0yypid.lambda-url.us-east-1.on.aws/fireCalculator

Last 30 days

All checks passedSome failedAll failedNot checked
Uptime
100%
Response time
132 ms typical, 132 ms slowest 5%
Last check
2 h ago
Next check
any minute now

How to call it

# See the payment challenge (nothing is charged)
curl -i -X POST "https://ppu43fkyhimq5fiqpmo42eh5ri0yypid.lambda-url.us-east-1.on.aws/fireCalculator" \
  -H "content-type: application/json" \
  -d '{"currentAge":30,"currentAnnualIncome":80000,"currentAnnualSpending":50000,"currentNetWorth":200000,"retirementAnnualSpending":40000}'
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%2Fppu43fkyhimq5fiqpmo42eh5ri0yypid.lambda-url.us-east-1.on.aws%2FfireCalculator
const res = await pay("https://ppu43fkyhimq5fiqpmo42eh5ri0yypid.lambda-url.us-east-1.on.aws/fireCalculator", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({"currentAge":30,"currentAnnualIncome":80000,"currentAnnualSpending":50000,"currentNetWorth":200000,"retirementAnnualSpending":40000}),
});
console.log(await res.json());

Example input

{
  "currentAge": 30,
  "currentAnnualIncome": 80000,
  "currentAnnualSpending": 50000,
  "currentNetWorth": 200000,
  "retirementAnnualSpending": 40000
}

Example output

{
  "data": {
    "fireNumber": 1000000,
    "netWorthTrajectory": [
      {
        "netWorth": 200000,
        "year": 0
      }
    ],
    "params": {
      "currentAge": 30,
      "currentAnnualIncome": 80000,
      "currentAnnualSpending": 50000,
      "currentNetWorth": 200000,
      "employerMatchPercent": 0,
      "incomeGrowthRate": 0,
      "inflationRate": 0.03,
      "investmentReturnRate": 0.07,
      "pretaxAnnualIncome": 80000,
      "retirementAge": 67,
      "retirementAnnualSpending": 40000,
      "swr": 0.04
    },
    "projectedAge": 57,
    "yearsToFI": 27
  },
  "ok": true
}

Security scan

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

Recent checks

WhenResultHTTPTimePrice
2 h agoPassed402132 ms$0.01
7 h agoPassed402139 ms$0.01