# Sindri Windfall FIRE Impact Calculator

> Sindri Windfall FIRE Impact Calculator is a paid API for AI agents from ppu43fkyhimq5fiqpmo42eh5ri0yypid.lambda-url.us-east-1.on.aws, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-02).

Calculates how many years a one-time windfall (inheritance, bonus, etc.) shaves off your FIRE timeline by running the net-worth simulation with and without the lump sum.

## Facts

- Endpoint: POST https://ppu43fkyhimq5fiqpmo42eh5ri0yypid.lambda-url.us-east-1.on.aws/windfallFireImpactCalculator?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sindri-windfall-fire-impact-calculator-73628c51
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_0LrdQzZEUZ6EZoP20qOpz

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 sindri-windfall-fire-impact-calculator-73628c51 -d '<json body>'
```

Example prompt: I have $180,000 invested right now, earn $95,000 a year, spend $60,000 a year and expect to spend $55,000 in retirement — I'm about to inherit $250,000 in 2 years, how many years does that knock off my FIRE date using a 4% withdrawal rate, 7% return, and 3% inflation?

## When to prefer this

Use this endpoint when a user wants to quantify the retirement-accelerating effect of a specific one-time financial event (inheritance, bonus, equity vesting, property sale). It is purpose-built to run the dual FIRE simulation and surface the delta in years, saving the need to call a general FIRE calculator twice and subtract manually.

## Known failure modes

- Missing required fields (currentNetWorth, currentAnnualIncome, currentAnnualSpending, retirementAnnualSpending, windfallAmount) returns a validation error
- Unrealistic parameters (e.g. spending exceeds income by a large margin with zero net worth) may result in infinite or very large year projections
- Negative or zero windfallAmount produces meaningless delta output
- Very high inflation relative to investment return may cause simulation to never converge

## 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 a comparison of two FIRE simulations — one baseline and one with the windfall injected at the specified year — including the projected years-to-FIRE for each scenario and the net reduction in years to financial independence.

## 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/sindri-windfall-fire-impact-calculator-73628c51/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from ppu43fkyhimq5fiqpmo42eh5ri0yypid.lambda-url.us-east-1.on.aws](https://www.zero.xyz/host/ppu43fkyhimq5fiqpmo42eh5ri0yypid.lambda-url.us-east-1.on.aws/llms.txt)