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manylives.me Finance Calculator
x402
manylives.me Finance Calculator is a paid API for AI agents from manylives.me, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-13).
Performs exact financial math for loan repayment, compound growth, NPV, IRR, and ROI calculations.
Price / call$0.002
Success—
StatusUnknown
How this service works
Exact finance maths: loan repayment and total interest, compound growth with regular contributions, NPV and IRR of cash flows, and ROI with annualised return.
Output
Returns a JSON object with the operation type and the computed financial metrics. For loans: monthly payment, total paid, and total interest. For compound growth: future value. For NPV: net present value. For IRR: internal rate of return as a percentage. For ROI: return on investment percentage and annualised return.
Example use cases
Mortgage affordability check
“I'm looking at a $350,000 home loan at 5.5% interest over 25 years — what would my monthly payment be and how much total interest would I pay?”
Retirement savings projection
“If I invest $50,000 now and add $500 every month at a 7% annual rate compounded monthly, how much will I have after 30 years?”
Investment IRR evaluation
“I have a project that costs $100,000 upfront and returns $30,000, $40,000, $35,000, and $25,000 over the next four years — what's the IRR so I can compare it against my hurdle rate?”
Technical details
Endpoint
GEThttps://manylives.me/paid/calc/finance?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need precise, deterministic financial math without relying on an LLM's arithmetic. Ideal for mortgage calculators, investment return projections, capital budgeting decisions (NPV/IRR), and ROI analysis. Prefer this over general-purpose code execution when you want a lightweight, instant, paid-per-call financial computation with no setup.
Side effects
- Missing required 'op' query parameter returns an error
- Invalid or non-numeric values for rate, principal, or years cause calculation failure
- IRR calculation may fail to converge if cash flow sign patterns are ambiguous
- Negative principal or rate values may produce nonsensical results
- Malformed comma-separated flows string for NPV/IRR causes a parse error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"op": "loan",
"payment": 1798.65,
"total_paid": 647514,
"total_interest": 247514
}
}Tags
x402
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