Loan Amortization Calculator

Calculates a loan's amortization and shows how extra payments shorten payoff and cut interest.

Overview

Calculates a loan's amortization and shows how extra payments shorten payoff and cut interest. Computes scheduled monthly payment, payoff months, total interest, total paid, and interest saved from extra monthly payments. Use it as a loan amortization calculator API, debt payoff schedule, or extra payment interest savings calculator.

Endpoint

Method	Endpoint	Price	Description
POST	/v1/marketplace/api/loan-amortization-calculator	$0.0115	Invoke Loan Amortization Calculator (General) and return the upstream response.

How to call it

Requests are paid per call over the x402 protocol. Call the endpoint, receive a 402 Payment Required quote, then repeat the request with the signed payment header. The SDKs do both steps for you.

# 1. Ask for a quote
curl -i -X POST https://api.jarvisclaw.ai/v1/marketplace/api/loan-amortization-calculator \
  -H 'Content-Type: application/json' \
  -d '{}'

# 2. Pay it (the SDK signs and retries for you)
curl -X POST https://api.jarvisclaw.ai/v1/marketplace/api/loan-amortization-calculator \
  -H 'Content-Type: application/json' \
  -H 'X-PAYMENT: <signed-payload>' \
  -d '{}'

Open in the marketplace