MCP Calculator Service

Integrations

Manages environment variables for the MCP server, including Anthropic API keys and port configurations.
Used for making HTTP requests to the calculator API endpoints, enabling the MCP server to perform mathematical operations like addition, subtraction, multiplication, division, and power calculations.
Powers the API endpoints for both the calculator service and MCP server, handling requests for mathematical operations and tool execution.

MCP Calculator Service

A Model-Context-Protocol (MCP) implementation for a calculator service that uses Claude AI to process natural language requests and perform mathematical calculations.

Architecture

The service consists of three main components:

Calculator API (calculator-api.js): Handles basic mathematical operations
MCP Server (mcp-server.js): Manages LLM integration and tool orchestration
MCP Client (mcp-client.js): Provides a user interface for interacting with the service

Setup

Install dependencies:

npm install

Create a .env file in the root directory with the following variables:

ANTHROPIC_API_KEY=your_api_key_here
PORT=3000
MCP_PORT=3001

Running the Service

You can run all components concurrently:

npm start

Or run them individually:

# Calculator API
npm run start:calculator

# MCP Server
npm run start:mcp

# MCP Client
npm run start:client

Usage

Once the service is running, you can interact with it through the client interface. Here are some example commands:

"Add 5 and 3"
"What is 10 plus 20?"
"Calculate 7.5 + 2.25"
"Multiply 4 by 6"
"What is 8 times 3?"

Type "help" for more examples or "exit" to quit.

API Endpoints

Calculator API (Port 3000)

POST /:operation - Perform mathematical operations (add, subtract, multiply, divide, power)
GET /health - Health check endpoint

MCP Server (Port 3001)

GET /tools - List available tools
POST /execute/:toolId - Execute a specific tool
POST /agent - Process natural language requests
GET /health - Health check endpoint

Error Handling

The service includes comprehensive error handling for:

Invalid mathematical operations
Division by zero
Invalid parameter types
LLM response parsing errors
Network errors

Dependencies

@anthropic-ai/sdk: ^0.51.0
axios: ^1.6.7
body-parser: ^1.20.2
cors: ^2.8.5
dotenv: ^16.4.5
express: ^4.18.3
concurrently: ^8.2.2 (dev dependency)

This server cannot be installed

security - not tested

license - not found

quality - not tested

A service that processes natural language requests to perform mathematical calculations by integrating Claude AI with a calculator API through the Model-Context-Protocol architecture.

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