Calculator SSE MCP Server

What is Calculator SSE?

Calculator SSE is a demo Node.js + TypeScript MCP (Model Context Protocol) server that exposes simple calculation tools—BMI (Body Mass Index) and addition—via Server-Sent Events (SSE) transport. It is designed for integration into GitHub Copilot Agent and Microsoft Copilot Studio for real-time streaming responses.

How to use Calculator SSE?

Install dependencies with npm install, compile TypeScript with npm run build, then start the server with npm run start (default port 3001). The SSE endpoint is at GET /sse. For GitHub Copilot Agent, add an MCP server entry in .vscode/mcp.json with type sse and url http://localhost:3001/sse. For Microsoft Copilot Studio, set up a custom connector using the provided Swagger specification.

Key features of Calculator SSE

• SSE (Server-Sent Events) transport for real-time responses
• BMI Calculator tool (calculate-bmi)
• Addition tool (calculate-sum)
• Ready for GitHub Copilot Agent integration
• Ready for Microsoft Copilot Studio integration
• Azure App Service deployment support

Use cases of Calculator SSE

• Prototyping MCP server integration with GitHub Copilot Agent
• Demonstrating MCP tool integration in Microsoft Copilot Studio
• Testing SSE-transport MCP servers in local development
• Learning MCP SDK and best practices with a simple calculator example