Mortgage Refinance Calculator

Calculates mortgage refinance savings and the break-even point.

Overview

Calculates mortgage refinance savings and the break-even point. Same backend as refinance-analysis-calculator, surfaced for buyers comparing current loan balance, current rate, new rate, closing costs, monthly savings, and break-even months. Use it as a mortgage refinance calculator, refi savings calculator, or refinance break-even analysis.

Endpoint

Method	Endpoint	Price	Description
POST	/v1/marketplace/api/mortgage-refinance-calculator	$0.0115	Invoke Mortgage Refinance 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/mortgage-refinance-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/mortgage-refinance-calculator \
  -H 'Content-Type: application/json' \
  -H 'X-PAYMENT: <signed-payload>' \
  -d '{}'

Open in the marketplace