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Node.js MCP Weather Server

Node.js MCP Weather Server with Azure Deployment

A Model Context Protocol (MCP) server built with Express.js and Node.js that provides weather information using the National Weather Service API. Ready for deployment to Azure App Service with Azure Developer CLI (azd).

🌟 Features

  • Express.js Framework: Fast, unopinionated web framework for Node.js
  • MCP Protocol Compliance: Full support for JSON-RPC 2.0 MCP protocol
  • HTTP Transport: HTTP-based communication for web connectivity
  • Weather Tools:
    • get_alerts: Get weather alerts for any US state
    • get_forecast: Get detailed weather forecast for any location
  • Azure Ready: Pre-configured for Azure App Service deployment
  • Web Test Interface: Built-in HTML interface for testing
  • National Weather Service API: Real-time weather data from official US government source

💻 Local Development

Prerequisites

  • Node.js 22+ (or Node.js 18+)
  • npm (Node Package Manager)

Setup & Run

  1. Clone and install dependencies:
    git clone <your-repo-url> cd remote-mcp-webapp-node npm install
  2. Start the development server:
    npm run dev
  3. Access the server:
    • Server: http://localhost:8000
    • Health Check: http://localhost:8000/health
    • Test Interface: http://localhost:8000/test

🔌 Connect to the Local MCP Server

Using VS Code - Copilot Agent Mode

  1. Add MCP Server from command palette and add the URL to your running server's HTTP endpoint:
    http://localhost:8000
  2. List MCP Servers from command palette and start the server
  3. In Copilot chat agent mode, enter a prompt to trigger the tool:
    What's the weather forecast for San Francisco?
  4. When prompted to run the tool, consent by clicking Continue

Using MCP Inspector

  1. In a new terminal window, install and run MCP Inspector:
    npx @modelcontextprotocol/inspector
  2. CTRL+click the URL displayed by the app (e.g. http://localhost:5173/#resources)
  3. Set the transport type to HTTP
  4. Set the URL to your running server's HTTP endpoint and Connect:
    http://localhost:8000
  5. List Tools, click on a tool, and Run Tool

🚀 Quick Deploy to Azure

Prerequisites

Deploy in 3 Commands

# 1. Login to Azure azd auth login # 2. Initialize the project azd init # 3. Deploy to Azure azd up

After deployment, your MCP server will be available at:

  • Health Check: https://<your-app>.azurewebsites.net/health
  • MCP Capabilities: https://<your-app>.azurewebsites.net/mcp/capabilities
  • Test Interface: https://<your-app>.azurewebsites.net/test

🔌 Connect to the Remote MCP Server

Follow the same guidance as above, but use your App Service URL instead.

🧪 Testing

Visit /test endpoint for an interactive testing interface.

🌦️ Data Source

This server uses the National Weather Service (NWS) API:

  • Real-time weather alerts and warnings
  • Detailed weather forecasts
  • Official US government weather data
  • No API key required
  • High reliability and accuracy
-
security - not tested
F
license - not found
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quality - not tested

remote-capable server

The server can be hosted and run remotely because it primarily relies on remote services or has no dependency on the local environment.

An MCP server that provides weather information like forecasts and alerts for US locations using the National Weather Service API.

  1. 🌟 Features
    1. 💻 Local Development
      1. Prerequisites
      2. Setup & Run
    2. 🔌 Connect to the Local MCP Server
      1. Using VS Code - Copilot Agent Mode
      2. Using MCP Inspector
    3. 🚀 Quick Deploy to Azure
      1. Prerequisites
      2. Deploy in 3 Commands
    4. 🔌 Connect to the Remote MCP Server
      1. 🧪 Testing
        1. 🌦️ Data Source

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