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Calculator MCP Server

by QuantGeekDev
npmGitHub
TypeScript
48
4
  • Apple
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calculator

A Model Context Protocol (MCP) server built with mcp-framework.

Quick Start

# Install dependencies npm install # Build the project npm run build

Project Structure

calculator/ ├── src/ │ ├── tools/ # MCP Tools │ │ └── ExampleTool.ts │ └── index.ts # Server entry point ├── package.json └── tsconfig.json

Adding Components

The project comes with an example tool in src/tools/ExampleTool.ts. You can add more tools using the CLI:

# Add a new tool mcp add tool my-tool # Example tools you might create: mcp add tool data-processor mcp add tool api-client mcp add tool file-handler

Tool Development

Example tool structure:

import { MCPTool } from "mcp-framework"; import { z } from "zod"; interface MyToolInput { message: string; } class MyTool extends MCPTool<MyToolInput> { name = "my_tool"; description = "Describes what your tool does"; schema = { message: { type: z.string(), description: "Description of this input parameter", }, }; async execute(input: MyToolInput) { // Your tool logic here return `Processed: ${input.message}`; } } export default MyTool;

Publishing to npm

  1. Update your package.json:
    • Ensure name is unique and follows npm naming conventions
    • Set appropriate version
    • Add description, author, license, etc.
    • Check bin points to the correct entry file
  2. Build and test locally:
    npm run build npm link calculator # Test your CLI locally
  3. Login to npm (create account if necessary):
    npm login
  4. Publish your package:
    npm publish

After publishing, users can add it to their claude desktop client (read below) or run it with npx

## Using with Claude Desktop ### Installing via Smithery To install Calculator for Claude Desktop automatically via [Smithery](https://smithery.ai/server/@QuantGeekDev/mcp-add-sse): ```bash npx -y @smithery/cli install @QuantGeekDev/mcp-add-sse --client claude

Local Development

Add this configuration to your Claude Desktop config file:

MacOS: ~/Library/Application Support/Claude/claude_desktop_config.json Windows: %APPDATA%/Claude/claude_desktop_config.json

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

After Publishing

Add this configuration to your Claude Desktop config file:

MacOS: ~/Library/Application Support/Claude/claude_desktop_config.json Windows: %APPDATA%/Claude/claude_desktop_config.json

{ "mcpServers": { "calculator": { "command": "npx", "args": ["calculator"] } } }

Building and Testing

  1. Make changes to your tools
  2. Run npm run build to compile
  3. The server will automatically load your tools on startup

Learn More

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A Model Context Protocol server built with mcp-framework that allows users to create and manage custom tools for processing data, integrating with the Claude Desktop via CLI.

  1. Quick Start
    1. Project Structure
      1. Adding Components
        1. Tool Development
          1. Publishing to npm
            1. Local Development
            2. After Publishing
          2. Building and Testing
            1. Learn More

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