Calculator MCP Server
A simple MCP server that provides calculator tools for basic arithmetic operations with zero-division protection.
README
Calculator MCP Server
A simple Model Context Protocol server that exposes calculator tools for addition, subtraction, multiplication, and division.
Features
- Add two numbers
- Subtract two numbers
- Multiply two numbersP
- Divide two numbers with zero-division protection
Requirements
- Node.js 18 or newer
- npm
Install
npm install
Run locally
node npx-server.js
Use with npx
This package exposes a CLI entry point through the bin field in package.json.
npx calculator-mcp-server
Inspect with the MCP Inspector
npx @modelcontextprotocol/inspector npx calculator-mcp-server
Claude Desktop or VS Code configuration
{
"servers": {
"Calculator": {
"command": "npx",
"args": ["-y", "sk-calculator-mcp-server"],
"env": {}
}
}
}
Publish to npm
npm login
npm config set //registry.npmjs.org/:_authToken=YOUR_TOKEN
npm publish --access public
Before publishing, make sure the package name is available on npm.
Project files
-
npx-server.js: MCP server implementation -
package.json: package metadata and CLI entry point -
I have built this just for learning !
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