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agent402.tools Financial Math (Compound & Loan)
x402
agent402.tools Financial Math (Compound & Loan) is a paid API for AI agents from agent402.tools, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Computes compound interest future value or monthly loan payment and total cost given principal, rate, and term.
Price / call$0.001
Success—
StatusUnknown
How this service works
Financial math. op: "compound" (future value of principal at a rate) or "loan" (monthly payment + total for a loan).
Output
For 'compound' op: returns the future value of the principal after the specified term at the given rate and compounding frequency. For 'loan' op: returns the monthly payment amount and the total cost of the loan over its full term.
Example use cases
Example prompt
“What would my monthly payment and total repayment be on a $25,000 car loan at 6.9% annual interest over 5 years? Also, separately, if I invest $10,000 at 5% compounded monthly for 10 years, what's the future value?”
Technical details
Endpoint
POSThttps://agent402.tools/api/financeWhen to prefer
Use this endpoint when you need quick, accurate financial math for either compound interest projections or loan payment calculations without building your own formulas. Prefer it over general-purpose code execution when you need a reliable, paid-API-grade financial computation with structured output. Best for single-scenario calculations; use the sibling loan-comparison or amortization-schedule endpoints for multi-scenario or period-by-period breakdowns.
Side effects
- Missing required fields (op, principal, annualRatePct, years/months) returns an error
- Invalid op value (not 'compound' or 'loan') returns an error
- Zero or negative principal or rate may produce unexpected results
- Payment failure (x402) if USDC balance insufficient — returns 402 status
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| op | string | compound | loan |
| years | number | |
| months | number | |
| principal | number | |
| annualRatePct | number | |
| compoundsPerYear | number |
Output
Schema · Response
{
"type": "json",
"example": {
"totalPaid": 23199.36,
"totalInterest": 3199.36,
"monthlyPayment": 386.66
}
}Tags
x402
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