McpStamp Loan Amortization

Name: McpStamp Loan Amortization
Author: theluckystrike

by theluckystrikeversion 0.23.0i★ –iComputer or cloud

Registry nameio.github.theluckystrike/amortization

Install

Overview

Description from the maker (original English)

Loan and lease schedules: level payment, interest split, early settlement cost and journals.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi3 of 3 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Computer or cloud
Transport: stdio, Streamable HTTP
Category: Online shops & payments
You need to fill in: MCP_LICENSE_KEY

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 3 of 3 passed
Runs on the maker’s server: what you ask it goes through their server.
Can do 9 things (tools) loan_create, loan_schedule, loan_repay_early, loan_journal …
You fill in yourself: MCP_LICENSE_KEY

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

Runs in the cloudNothing to install; it connects over the internet

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Works in Claude on the web, desktop and mobile:

Open Settings → Connectors
Press Add custom connector
Paste the address below and press Add
If it asks you to sign in, sign in with the maker

https://mcp.zovo.one/mcp/amortization

Download the maker’s .mcpb file

The link goes to the maker’s own file; we do not host or repackage it. Open the file and Claude Desktop installs it.

Run this in your terminal

claude mcp add --transport http amortization https://mcp.zovo.one/mcp/amortization

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "amortization": {
      "url": "https://mcp.zovo.one/mcp/amortization"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "amortization": {
      "type": "http",
      "url": "https://mcp.zovo.one/mcp/amortization"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

ChatGPT connects only to servers on the internet:

Open ChatGPT on the web → Settings → Connectors (Apps)
Press Create or Add (some plans need Developer mode under Advanced first)
Paste the address below, give it a name and save
If it asks you to sign in, sign in with the maker

https://mcp.zovo.one/mcp/amortization

Menu names can differ slightly by plan and over time.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

MCP_LICENSE_KEY secret env
Optional Pro license key (MCPL1....). Verified offline.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Tool names and descriptions exactly as the server reported them on Nov 6, 2026. The maker wrote them, not us; we show them as plain text.

loan_create
Record a loan or lease and return its id, level payment and effective annual rate. principal_minor, fees and balloon are whole MINOR units; rate_bps is the nominal annual rate in basis points. Free: 3 agreements.
loan_schedule
Build one loan's schedule: opening balance, payment, interest, principal and closing per period, with total interest. The last period absorbs rounding, landing exactly on the balloon or zero. loans_report totals it.
loan_repay_early
Work out what settling or overpaying costs as of a period: the outstanding balance, the penalty if one is given, the recalculated remaining schedule and the interest saved, stated gross and net of the penalty. Pro.
loan_journal
Return the double entry for one payment period or month: debit interest expense and loan liability, credit cash, in the cash book's account names, with an expense_add-ready payload. Give period or month, not both. Pro.
loan_list
List the register with terms, level payment, effective annual rate and, at as_of, periods paid, balance outstanding, interest to date and the next payment, totalled per currency. Free; loans_report is the Pro roll-up.
loan_delete
Remove one loan or lease from the register and give its free-tier slot back. Refused, with the entry named, if a journal has already been taken from it. Free.
loans_report
The debt at as_of: per loan what is outstanding, whether it is settled, the next payment, and the interest and principal charged in a year, then totals per currency. Contractual balance, not cash paid. Pro.
license_status
Report this endpoint's licence state for your token as JSON: the product, the tier free or pro, why it is not Pro, and the checkout URL. Call it to explain a free-tier refusal. No arguments, nothing changes.
license_activate
Turn Pro on for this connection with key, an MCPL1. . issued at checkout for this server or the bundle. Data under your token stays; a wrong or expired key changes nothing. license_status confirms it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account theluckystrike, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
✓ Pass
Endpoint responds
Responded in 46 ms (HTTP 200)
– Not applicable
Sign-in with OAuth
No sign-in needed
✓ Pass
No hidden instructions in tool descriptions
Read 9 tool descriptions and found no hidden instructions to the AI

Compared with others in Online shops & paymentsi

More stars than 0% of the other 1752 servers in this category
Published to the registry more recently than 82% of the other 1752 servers in this category
Basic checks equal to or better than 100% of the other 1752 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is McpStamp Loan Amortization safe?

It passed 3 of 3 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: MCP_LICENSE_KEY

Does it run on my computer or in the cloud?

Either way works: install it on your computer or connect to the cloud version.

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.23.0) reached the registry 5 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Spree Commerce: open-source B2B and marketplace ecommerce, Stripe MCP, MCP Cn Commerce

Alternatives

Servers in the same category from other makers, sorted by stars.

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MCP Cn Commerce

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README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

mcp-amortization

In the [official MCP Registry](https://registry.modelcontextprotocol.io/v0.1/servers/io.github.theluckystrike%2Famortization/versions/latest) (io.github.theluckystrike/amortization). Loan and lease schedules for an AI assistant. Give it the terms of a credit agreement, the amount, the nominal annual rate in basis points, how often interest compounds, how often a payment falls due, the term in periods, the method, any arrangement fee and any balloon, and it works out the payment, the effective annual rate, and the schedule period by period: opening balance, payment, interest, principal, closing balance. It answers what settling early would cost and save, and hands back the double entry for a payment in the same account names the cash book uses. Everything is integer minor units, and every closing balance reaches the balloon, or zero, exactly. Nothing is sent anywhere: the register is a file on your machine.

npm publish for @theluckystrike/mcp-amortization is pending, so npx -y @theluckystrike/mcp-amortization returns 404 today. Until then, the .mcpb one-click bundle or a clone+build is the working path.

Install

Claude Desktop, macOS ~/Library/Application Support/Claude/claude_desktop_config.json, Windows %APPDATA%\Claude\claude_desktop_config.json:

"mcpServers": { "amortization": { "command": "npx", "args": ["-y", "@theluckystrike/mcp-amortization"] } } }

claude mcp add amortization -- npx -y @theluckystrike/mcp-amortization

Cursor, ~/.cursor/mcp.json (global) or .cursor/mcp.json (project). Same entry as Claude Desktop.

Tools

Tool	What it does
`loan_create`	Record a loan or lease from its terms. Returns `LOAN-YYYY-NNNN`, the level payment, the effective annual rate and the total interest
`loan_schedule`	The schedule: opening, payment, interest, principal, closing for every period, and the total interest
`loan_repay_early`	What settling or overpaying at a period costs: the outstanding balance, the penalty, the recalculated remaining schedule and the interest saved, gross and net of the penalty
`loan_journal`	The double entry for a period or a month: debit interest expense and loan liability, credit cash, plus an `expense_add`-ready payload
`loan_list`	The register, with the balance outstanding and the next payment date at any date
`loan_delete`	Remove one agreement and give its slot back. Refused, with the entry named, if a journal has already been taken from it
`loans_report`	What is owed per currency, when each next payment falls due, and the interest charged in a calendar year
`license_status`, `license_activate`	Your tier, and activating a Pro key

Free vs Pro

	Free	Pro
Loans in the register	3	Unlimited
Schedules	Unlimited	Unlimited
Delete an agreement (`loan_delete`)	Yes	Yes
Early repayment (`loan_repay_early`)	-	Yes
Journals (`loan_journal`)	-	Yes
Report (`loans_report`)	-	Yes

loan_delete is free on purpose. The cap is on agreements held, so recording the same lease twice would otherwise cost two of the three slots with no way back but a key; a duplicate is refused by loan_create before anything is written, naming the record it matches, and anything already in the register comes back out with loan_delete. A loan a journal has been taken from is refused instead, and named, because those lines are already in somebody's ledger.

The schedule is never metered. The payment and the interest are the question this server exists to answer, and a free tier that hides the answer is a demo. The meter is on the number of agreements held, which is the unit of work.

Get Pro: https://mcp.zovo.one/buy/amortization, $19 one-time for this server, or $39 for the bundle.

A measured insight

Quoting a rate per quarter as the nominal rate over four is worth 1.0 percent of the interest, in the lender's favour. Take EUR 10,000 at a nominal 12 percent compounded MONTHLY, repaid in four quarterly instalments. The rate for one quarter is the equivalent rate, (1 + 0.12/12)^3 - 1 = 3.0301 percent, not 0.12/4 = 3.0000 percent. That 3-basis-point difference sets the payment at EUR 2,692.21 instead of EUR 2,690.27 and the total interest at EUR 768.84 instead of EUR 761.08: EUR 7.76 more, 1.0 percent of the whole interest bill, on a one-year loan of ten thousand. The two rates look identical in a quote and diverge in the schedule, which is why this server takes every equivalent rate through the compounding clock and prints the periodic rate it used to six decimal places.

The same arithmetic is why the effective annual rate is reported beside the nominal one on every loan: a nominal 12 percent compounded monthly is an effective 12.68 percent, and 0.68 of a percent is the part of the price the headline rate does not carry.

Privacy

All data stays local, in ${XDG_DATA_HOME:-~/.local/share}/mcp-servers/amortization/. Two files: loans.json and counter.json. No network call is made by this server at all, for any tool. No schedule is stored: every row is derived from the terms on the call, because a stored schedule is a second copy of a figure the rate and the term already decide, and the copy is the one that gets believed after somebody edits the rate.

Built by theluckystrike. https://github.com/theluckystrike

Use these docs as an MCP server

Any MCP client (Claude, Cursor, Windsurf, VS Code) can read this repository's documentation directly via GitMCP - no install:

Docs MCP URL: https://gitmcp.io/theluckystrike/mcp-amortization

McpStamp Loan Amortization

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Online shops & paymentsi

Common questions

Alternatives

Spree Commerce: open-source B2B and marketplace ecommerce

Stripe MCP

MCP Cn Commerce

README from the maker

mcp-amortization

Install

Tools

Free vs Pro

A measured insight

Privacy

Use these docs as an MCP server