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24K Labs Retirement & FIRE Calculator
x402
24K Labs Retirement & FIRE Calculator is a paid API for AI agents from api.24klabs.ai, paid per call via x402, $0.004/call, status unknown (last checked 2026-09-15).
Calculates retirement corpus, years-to-financial-independence, and safe withdrawal amounts based on savings, contributions, return rate, inflation, and target spend.
Price / call$0.004
Success—
StatusUnknown
How this service works
Retirement corpus, years-to-FI and safe withdrawal draw from current savings, contribution, expected return, inflation and target annual spend (withdrawal rate configurable, default 4%).
Output
Returns the projected retirement corpus at the point of financial independence, the number of years required to reach FI, the safe annual withdrawal amount based on the configured withdrawal rate (default 4%), and related projections factoring in contributions, expected investment return, and inflation.
Example use cases
FIRE timeline for early retiree
“I currently have $180,000 saved, put away $30,000 a year, expect 8% returns and 3% inflation, and want to live on $50,000 a year in retirement — how many years until I'm financially independent and what corpus do I need?”
Retirement readiness check at 55
“I'm 55 with $900,000 saved, still contributing $20,000 a year, projecting 6% returns and 2.5% inflation, and targeting $75,000 a year in retirement spending — can you tell me my projected corpus and how long until I can retire?”
Safe withdrawal stress test
“If I have a $1.2 million portfolio, plan to withdraw $48,000 a year, assume 6% returns and 3% inflation, and use a 4% withdrawal rate — what does my retirement corpus projection look like and is my spend sustainable?”
Technical details
Endpoint
POSThttps://api.24klabs.ai/api/retirement-fire-calculatorWhen to prefer
Choose this endpoint when you need a fast, structured FIRE/retirement calculation that combines corpus projection, years-to-FI, and safe withdrawal in a single call. It is purpose-built for the FIRE movement's standard assumptions (configurable withdrawal rate defaulting to 4%) and accounts for inflation, making it superior to generic financial formula endpoints. Ideal for personal finance agents, retirement planning tools, or any workflow that needs parameterized retirement projections without building the math from scratch.
Side effects
- Missing required fields (e.g. no current savings or target spend) returning a 400 error
- Implausible inputs such as negative return rates or zero contributions causing computation errors
- Withdrawal rate set so low or high that results are nonsensical
- Inflation rate exceeding return rate producing undefined or infinite years-to-FI
- Payment failure or insufficient USDC balance causing 402 rejection
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inflation | number | |
| annual_spend | number | |
| current_savings | number | |
| expected_return | number | |
| withdrawal_rate | number | |
| annual_contribution | number |
Output
Schema · Response
{
"type": "json",
"example": {
"fire_number": 1250000,
"years_to_fi": 18,
"safe_annual_withdrawal": 50000
}
}Tags
x402
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