# Purchase FIRE Impact Calculator

> Purchase 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 2026-10-12).

Calculates how many years a one-time purchase delays your FIRE (Financial Independence, Retire Early) date by running the net-worth simulation with and without the purchase deducted

## Facts

- Endpoint: POST https://ppu43fkyhimq5fiqpmo42eh5ri0yypid.lambda-url.us-east-1.on.aws/purchaseFireImpactCalculator?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/purchase-fire-impact-calculator-47d95bcb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_metxAUimZf-IMkStc6DE3

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 purchase-fire-impact-calculator-47d95bcb -d '<json body>'
```

Example prompt: I'm thinking about buying a $35,000 car right now. I have $200,000 invested, take home $80,000 a year, spend $50,000 a year currently and expect to spend $45,000 a year in retirement — can you tell me how many years that car purchase would push back my FIRE date, assuming a 7% return, 3% inflation, and a 4% safe withdrawal rate?

## When to prefer this

Use this endpoint when you need to quantify the true opportunity cost of a specific one-time purchase on a user's FIRE timeline, running a dual simulation comparison. Prefer this over a general FIRE calculator when the user is weighing a specific discretionary expense and wants to know its retirement delay in years, not just the dollar amount foregone.

## Known failure modes

- Missing required fields (purchaseAmount, currentNetWorth, currentAnnualIncome, currentAnnualSpending, retirementAnnualSpending) return a 400-level error
- Negative or zero net worth or income values may produce nonsensical projections
- Extremely high spending relative to income may cause the simulation to never converge on a FIRE date
- Invalid rate values (e.g. SWR or return rate above 1 or below 0) may cause unexpected results

## How this service works

Purchase impact on FIRE timeline calculator. Runs the FIRE net-worth simulation twice — with and without a one-time purchase amount deducted at a given year — and reports how many years that purchase delays financial independence, quantifying its true opportunity cost.

## Output

Returns a comparison of two FIRE simulation runs — one baseline and one with the purchase amount deducted at the specified year — showing the resulting FIRE dates for each scenario and the number of years the purchase delays 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."
  },
  "purchaseYear": {
   "type": "number",
   "default": 0,
   "description": "Number of years from now the purchase is made. Default 0."
  },
  "inflationRate": {
   "type": "number",
   "default": 0.03,
   "description": "Expected annual inflation rate, as a fraction. Default 0.03."
  },
  "purchaseAmount": {
   "type": "number",
   "description": "One-time purchase amount."
  },
  "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/purchase-fire-impact-calculator-47d95bcb/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)