# Windfall FIRE Impact Calculator

> Windfall FIRE Impact Calculator is a paid API for AI agents from x402.outpimp.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).

Runs the FIRE net-worth simulation with and without a one-time windfall and reports how many years the lump sum shaves off your time to financial independence.

## Facts

- Endpoint: POST https://x402.outpimp.com/windfallFireImpactCalculator
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/windfall-fire-impact-calculator-a08ab6d5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_SFs7ytF908K4VQzdRw1Lu

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability windfall-fire-impact-calculator-a08ab6d5 -d '<json body>'
```

Example prompt: I have $150k invested, earn $80k a year, spend $50k a year now and expect to spend $45k in retirement. If I inherit $200k in year 2, how many years does that shave off my FIRE timeline? Use a 7% return, 3% inflation, and 4% safe withdrawal rate.

## When to prefer this

Choose this endpoint when you need a fast, deterministic dual-scenario FIRE simulation comparing a baseline retirement timeline against one augmented by a one-time cash event. It is ideal for agents helping users reason about inheritances, bonuses, asset sales, or any lump-sum financial event. Prefer this over generic compound-interest calculators when the user specifically wants to know the FIRE-date delta caused by a windfall.

## Known failure modes

- Missing required fields (currentNetWorth, currentAnnualIncome, currentAnnualSpending, retirementAnnualSpending, windfallAmount) return a validation error
- Negative or zero values for spending/income may produce unrealistic or infinite timelines
- Safe withdrawal rate or return rate set to 0 causes division-by-zero or non-convergence
- Very large windfallYear values may push the windfall past the baseline FIRE date, returning zero years saved
- Network or payment failure (x402 protocol) returns a 402 Payment Required error

## How this service works

Windfall impact on FIRE timeline calculator. Runs the FIRE net-worth simulation twice — with and without a one-time lump sum added at a given year — and reports how many years the windfall shaves off your time to financial independence.

## Output

Returns two full FIRE simulation runs — one baseline and one with the windfall injected at the specified year — along with the number of years saved and projected FIRE dates for each scenario, allowing direct side-by-side comparison.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "swr": {
   "type": "number",
   "default": 0.04,
   "description": "Safe withdrawal rate, as a fraction. Default 0.04."
  },
  "windfallYear": {
   "type": "number",
   "default": 0,
   "description": "Number of years from now the windfall is received. Default 0."
  },
  "inflationRate": {
   "type": "number",
   "default": 0.03,
   "description": "Expected annual inflation rate, as a fraction. Default 0.03."
  },
  "windfallAmount": {
   "type": "number",
   "description": "One-time lump sum received."
  },
  "currentNetWorth": {
   "type": "number",
   "description": "Current invested net worth."
  },
  "currentAnnualIncome": {
   "type": "number",
   "description": "Current annual take-home income."
  },
  "investmentReturnRate": {
   "type": "number",
   "default": 0.07,
   "description": "Expected annual investment return, as a fraction. Default 0.07."
  },
  "currentAnnualSpending": {
   "type": "number",
   "description": "Current annual spending."
  },
  "retirementAnnualSpending": {
   "type": "number",
   "description": "Expected annual spending in retirement."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/windfall-fire-impact-calculator-a08ab6d5/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.outpimp.com](https://www.zero.xyz/host/x402.outpimp.com/llms.txt)