mcpField
L
loan-calculator

loan-calculator

Local
github.com/theluckystrikeFinance2Updated 1d ago
Repository

About loan-calculator

loan-calculator is an MCP server that computes loan and mortgage payments and amortization schedules locally using the standard amortization formula. It is for people who want to calculate total interest, inspect monthly balances, or compare loan terms in a conversation.

Key features

  1. 01Calculate monthly payments, total paid, and interest
  2. 02Generate month-by-month amortization schedules
  3. 03Show principal, interest, and remaining balance
  4. 04Handle zero-interest loans

Use cases

  1. 01Estimate mortgage payments and total interest
  2. 02Review the first year of car-loan payments
  3. 03Compare loan costs across rates and terms

MCP support

As an MCP server, it provides MCP clients with `loan_payment` and `loan_amortize` tools for calculating payments and amortization schedules.

Configuration

Local server config is the same for every client. Copy it into your client’s MCP config file.

No install method listed yet

We haven’t collected a package or remote endpoint for this server. Follow the instructions in the project README.

Repository
Packages
mcpbloan-calculator.mcpb0.22.0

Tools

No tool list yet

Local servers expose tools only once running on your machine, and the maintainer has not provided a tool list.

Details

From the project README

MCP Loan Calculator — monthly payments and full amortization in one sentence

Give Claude (or any MCP client) real loan math: loan_payment for the monthly payment and total interest of a loan, loan_amortize for the full month-by-month schedule. Standard amortization formula, computed on your machine, no rate-shopping site and no spreadsheet.

Why a loan server

Mortgage and loan calculators on the web bury the answer under ads and lead forms. Here you ask "what's the monthly payment on a 420,000 loan at 5.5% for 25 years" and get the number, the total interest, and — if you want it — every row of the amortization schedule: principal vs interest per month, balance after each payment, the month the balance crosses half. Useful for comparing offers side by side in one conversation.

What it does

  • loan_payment — principal, annual rate (%), term in years → monthly payment, total paid, total interest. Zero-interest loans are handled exactly (straight-line division), not by a formula edge case.
  • loan_amortize — the same inputs → the full schedule, month by month, with running balance. Ask for "first 12 months" or the whole term.

Install

{
  "mcpServers": {
    "mcp-loan-calculator": {
      "command": "npx",
      "args": ["-y", "github:theluckystrike/mcp-loan-calculator"]
    }
  }
}

Try it

  • "Monthly payment on a 420,000 mortgage at 5.5% over 25 years, plus total interest."
  • "Amortize a 30,000 car loan at 7.9% for 5 years — show me the first year."
  • "Compare: 25 years at 5.5% vs 20 years at 5.2%. Which costs less overall?"

Part of the luckystrike MCP suite

Free, part of the luckystrike MCP suite — productivity & finance servers that turn AI chat into working documents and calculations. Listing in the official MCP Registry.

Docs (GitMCP)

Live docs endpoint: https://gitmcp.io/theluckystrike/mcp-loan-calculator

Comments

Markdown supported

New to MCP?

From what the protocol is to installing your first server, these answers cover most first questions.

An open protocol that defines how AI applications connect to external tools and data in a uniform way. Clients talk to the model; MCP servers provide tools, resources and prompt templates. They exchange standard messages, so one server can be reused by many clients.