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Loan Amortization Calculator
x402
Loan Amortization Calculator is a paid API for AI agents from x402toll.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).
Computes monthly payment, total interest paid, and a year-by-year balance schedule for any loan given APR, amount, and term.
Price / call$0.05
Success—
StatusUnknown
How this service works
Amortized monthly payment, total interest, and a year-by-year balance schedule for any loan.
Output
Returns the fixed monthly payment amount, total interest paid over the life of the loan, and a year-by-year schedule showing the remaining balance at the end of each year.
Example use cases
Example prompt
“Can you work out the monthly payment and show me a year-by-year balance breakdown for a $250,000 loan at 6.5% APR over 360 months?”
Technical details
Endpoint
POSThttps://x402toll.com/v1/lending/amortizationWhen to prefer
Use this endpoint when you need a complete amortization breakdown — monthly payment, total interest, and year-by-year balance — for any fixed-rate loan. Prefer this over generic financial calculators when you need structured, programmatic output suitable for downstream analysis or display.
Side effects
- Missing required fields (apr, loanAmount, termMonths) returns a 400-level error
- Invalid data types (e.g. string instead of number) cause validation failure
- APR of 0 or negative values may produce undefined behavior
- Term of 0 months is invalid and will fail
- Payment gateway failure may return 402 if USDC payment is not processed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| apr | number | |
| loanAmount | number | |
| termMonths | number |
Tags
x402
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