Calculator MCP

Name: Calculator MCP
Author: tech-sushant

by tech-sushantversion 1.0.1i★ –iRuns on your computer

Registry nameio.github.tech-sushant/calculator-mcp

Install

Overview

Description from the maker (original English)

A simple Model Context Protocol calculator server

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 checksi1 of 1 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: Runs on your computer
Transport: stdio
Category: Other

Install

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

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
The registry lists no key to fill in.

You need

npmNode.js installed (for the npx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

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

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "calculator": {
      "command": "npx",
      "args": [
        "-y",
        "@tech-sushant/calculator-mcp"
      ]
    }
  }
}

Run this in your terminal

claude mcp add calculator -- npx -y @tech-sushant/calculator-mcp

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "calculator": {
      "command": "npx",
      "args": [
        "-y",
        "@tech-sushant/calculator-mcp"
      ]
    }
  }
}

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": {
    "calculator": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@tech-sushant/calculator-mcp"
      ]
    }
  }
}

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.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

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

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

What it can do

Runs on your computer; the tool list appears in your AI app after you install 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 8, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account tech-sushant, 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
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Otheri

More stars than 0% of the other 18372 servers in this category
Published to the registry more recently than 1% of the other 18372 servers in this category
Basic checks equal to or better than 100% of the other 18372 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 Calculator MCP safe?

It passed 1 of 1 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?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.0.1) reached the registry 12 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, A1RO — Irish employment tools

Alternatives

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Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

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A1RO — Irish employment tools

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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.

Calculator MCP Server

A simple Model Context Protocol (MCP) server that provides basic calculator functionality through MCP tools.

Features

This MCP server provides the following calculator tools:

add: Add two numbers together
subtract: Subtract second number from first number
multiply: Multiply two numbers together
divide: Divide first number by second number (with zero-division protection)
power: Raise first number to the power of second number
sqrt: Calculate square root of a number (with negative number protection)

Installation

Install dependencies:

npm install

Build the TypeScript code:

npm run build

Usage

Running the Server

Start the MCP server:

npm start

Or run in development mode:

npm run dev

MCP Client Configuration

To use this calculator MCP server with an MCP client (like Claude Desktop), add it to your MCP configuration:

"mcpServers": { "calculator": { "command": "node", "args": ["/path/to/calculator-mcp/dist/index.js"], "env": {} } } }

Available Tools

add

Adds two numbers together.

Parameters: a (number), b (number)
Example: add(5, 3) returns 5 + 3 = 8

subtract

Subtracts the second number from the first.

Parameters: a (number), b (number)
Example: subtract(10, 4) returns 10 - 4 = 6

multiply

Multiplies two numbers together.

Parameters: a (number), b (number)
Example: multiply(6, 7) returns 6 × 7 = 42

divide

Divides the first number by the second.

Parameters: a (number), b (number)
Example: divide(15, 3) returns 15 ÷ 3 = 5
Error handling: Returns error for division by zero

power

Raises the base to the power of the exponent.

Parameters: base (number), exponent (number)
Example: power(2, 8) returns 2^8 = 256

sqrt

Calculates the square root of a number.

Parameters: number (number)
Example: sqrt(16) returns √16 = 4
Error handling: Returns error for negative numbers

Development

Project Structure

calculator-mcp/

├── src/ │ └── index.ts # Main MCP server implementation ├── dist/ # Compiled JavaScript output ├── package.json # Dependencies and scripts ├── tsconfig.json # TypeScript configuration └── README.md # This file

Building

npm run build

Development Mode

npm run dev

Error Handling

The calculator includes proper error handling for:

Division by zero
Square root of negative numbers
Invalid tool names
General execution errors

All errors are returned with appropriate error messages and the isError flag set to true.

License

MIT

Calculator MCP

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

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 Otheri

Common questions

Alternatives

Spec Driven Development

Remote Desktop Commander

A1RO — Irish employment tools

README from the maker

Calculator MCP Server

Features

Installation

Usage

Running the Server

MCP Client Configuration

Available Tools

add

subtract

multiply

divide

power

sqrt

Development

Project Structure

Building

Development Mode

Error Handling

License