🚀 NexusHub

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✨ Features

• 📡 Dual Interface - Supports both HTTP and stdio MCP protocols
• 💅 Modern Dashboard - Beautiful Protocol design system admin interface with dark mode by default
• 🔌 Integrated Services - Combines multiple MCP servers (Memory, GitHub, Brave Search)
• 🔍 Vector Database - Document ingestion and semantic search capabilities
• 🔑 API Management - Securely manage API keys and service configurations
• 🐳 Docker Integration - Easy deployment with Docker and Docker Compose
• 📋 Advanced Prompts - Pre-configured prompts for effective AI interactions
• 🔄 Real-time Status - Monitor the health of all connected services

🏛️ Architecture

NexusHub uses a Node.js backend with Express for the HTTP interface and native stdio handling for the CLI interface. The server integrates with several key services:

┌─────────────────────────────────────────────────────┐
│                  Claude Desktop                     │
└───────────┬─────────────────┬───────────┬───────────┘
            │                 │           │
            ▼                 ▼           ▼           
┌───────────────────┐ ┌─────────────┐ ┌─────────────┐ 
│    NexusHub MCP   │ │ Memory MCP  │ │ GitHub MCP  │ 
│       Server      │ │   Server    │ │   Server    │ 
└─────────┬─────────┘ └─────────────┘ └─────────────┘ 
          │                  ▲                ▲        
          ▼                  │                │        
┌─────────────────┐          │                │        
│  Vector Store   │          │                │        
└─────────────────┘          │                │        
          │                  │                │        
          ▼                  │                │        
┌─────────────────┐ ┌─────────────┐ ┌─────────────────┐
│ Filesystem API  │ │ Database API│ │   Docker API    │
└─────────────────┘ └─────────────┘ └─────────────────┘

🛠️ Available Tools

NexusHub provides the following tools to Claude AI:

Category	Tool	Description
Filesystem	fs_list_files	List files in a directory
	fs_read_file	Read file contents
	fs_write_file	Write to a file
Database	db_execute_query	Execute a read-only SQL query
	db_list_tables	List all tables in the database
	db_describe_table	Get table schema
	db_insert_data	Insert data into a table
Docker	docker_list_containers	List Docker containers
	docker_start_container	Start a container
	docker_stop_container	Stop a container
	docker_get_container_logs	Get container logs
Search	serper_search	Perform web search via Serper API
Vector DB	ingest_docs	Ingest documents into the vector store
	vector_search	Search for similar documents

🚀 Getting Started

Prerequisites

• Docker and Docker Compose
• Node.js 18+
• Python 3.8+ (for vector embedding)

Installation

1. Clone the repository:

   git clone https://github.com/webdevtodayjason/NexusHub.git
   cd NexusHub
   

2. Set up environment variables:

   cp .env.example .env
   # Edit .env file with your API keys
   

3. Start the services:

   docker-compose up -d
   

4. Access the dashboard: Open http://localhost:8001/dashboard in your browser

Configuration for Claude Desktop

NexusHub supports two different integration methods with Claude Desktop:

1. HTTP Mode

This mode connects to NexusHub via HTTP endpoints. Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "nexushub": {
      "name": "NexusHub MCP Server",
      "description": "Centralized MCP server with multiple capabilities",
      "url": "http://localhost:8001/mcp",
      "enabled": true
    }
  }
}

2. STDIO Mode (Recommended)

This mode uses direct process communication for better performance and reliability. It requires the NexusHub code to be available locally:

1. Prepare the wrapper scripts:

   # Make the wrapper script executable
   chmod +x /path/to/nexushub/nexushub-mcp.sh
   chmod +x /path/to/nexushub/src/mcp/adapters/stdio-wrapper.js
   chmod +x /path/to/nexushub/src/mcp/stdio-adapter.js
   

2. Add to your claude_desktop_config.json:

   {
     "mcpServers": {
       "nexushub": {
         "name": "NexusHub MCP Server",
         "description": "Centralized MCP server with multiple capabilities",
         "command": "/path/to/nexushub/nexushub-mcp.sh",
         "enabled": true
       },
       "brave-search": {
         "name": "Brave Search MCP",
         "description": "Provides web search capabilities via Brave Search API.",
         "command": "docker",
         "args": ["exec", "-i", "mcp_brave_search", "node", "dist/index.js"],
         "enabled": true
       },
       "github": {
         "name": "GitHub MCP",
         "description": "Provides GitHub repository interaction.",
         "command": "docker",
         "args": ["exec", "-i", "mcp_github", "node", "dist/index.js"],
         "enabled": true
       },
       "memory": {
         "name": "Memory MCP",
         "description": "Persistent knowledge graph memory.",
         "command": "docker",
         "args": ["exec", "-i", "mcp_memory", "node", "dist/index.js"],
         "enabled": true
       }
     }
   }
   

Note: Replace /path/to/nexushub with your actual NexusHub installation path.

Docker Containers

Make sure all Docker containers are running before starting Claude Desktop:

cd /path/to/nexushub
docker-compose up -d

This will start all required MCP servers:

• NexusHub (primary server with filesystem, database, Docker tools)
• Brave Search MCP (web search capabilities)
• GitHub MCP (repository interaction)
• Memory MCP (knowledge graph/persistent memory)

💡 Example Usage

Here are some examples of how to use NexusHub with Claude AI:

File Operations

Please use fs_list_files to show me all the JavaScript files in the src directory, 
then read the content of any interesting files you find.

Database Query

Can you use db_execute_query to find all users in the database who joined 
in the last month and have the "admin" role?

Vector Search

Please use vector_search to find documentation related to "authentication flow" 
and summarize the key points.

Combined Tools

First, use brave_web_search to find the latest best practices for React error boundaries. 
Then, use fs_read_file to examine our current implementation in ErrorBoundary.jsx, 
and suggest improvements based on what you found.

🧩 How to Add Your Own Tools

You can extend NexusHub with custom tools by adding new tool definitions to the /src/mcp/tools/ directory:

// src/mcp/tools/my-custom-tools.js

export function getToolDefinitions() {
  return {
    my_custom_tool: {
      name: 'my_custom_tool',
      description: 'Description of what the tool does.',
      inputSchema: {
        type: 'object',
        properties: {
          param1: {
            type: 'string',
            description: 'Description of parameter 1'
          }
          // Add more parameters as needed
        },
        required: ['param1']
      }
    }
  };
}

// Tool implementation
export async function myCustomTool(param1) {
  // Your custom tool logic here
  return { result: 'Success!' };
}

Then add the tool to /src/mcp/tools/index.js and /src/mcp/tools/handler.js.

🔄 Local Development

1. Install dependencies:

   npm install
   

2. Run in development mode:

   npm run dev
   

3. For stdio mode testing:

   npm run stdio
   

🧪 Running Tests

# Run all tests
npm test

# Run specific test suite
npm test -- --grep "API Keys"

🔧 Troubleshooting

Claude Desktop Integration Issues

1. "Unexpected token" errors when starting Claude Desktop:

   • Make sure your wrapper scripts have proper permissions: chmod +x nexushub-mcp.sh
   • Verify that all scripts filter non-JSON output correctly
   • Check log files in /tmp/nexushub-debug-*.log for details

2. MCP server not loading or tools not appearing:

   • Ensure Docker containers are running: docker ps | grep mcp
   • Check container logs: docker logs mcp_brave_search
   • Verify Claude Desktop configuration has the correct paths/commands
   • Try restarting Claude Desktop after making changes

3. Docker container issues:

   • Clear Docker logs if they get too large: docker system prune
   • Restart containers: docker-compose restart
   • Check for port conflicts: lsof -i :8001

Common Error Messages

Error	Solution
"Method not found"	The MCP server doesn't support this method. Check if you're using the correct tool name.
"Socket hang up"	Connection issue. Check if the MCP server is running.
"ENOENT"	File or directory not found. Check paths in your configuration.
"Permission denied"	File permission issue. Check script permissions.
"Unexpected token"	JSON parsing error. Check the MCP server's stdout output.

📚 Documentation

Tool Development Guides

• Quick Start Guide - Get up and running in 5 minutes
• Tool Development Guide - Comprehensive guide to creating tools
• AI Tool Creation Prompts - Optimized prompts for AI-assisted tool creation

Integration Guides

• Claude Desktop Integration - Connect NexusHub to Claude Desktop
• Claude CLI Integration - Use NexusHub with Claude CLI

MCP Resources

• Model Context Protocol Official Site
• MCP Quickstart for Claude Desktop Users
• Claude Code Documentation

For complete documentation, visit the NexusHub Wiki.

🤝 Contributing

Contributions are what make the open source community such an amazing place to learn, inspire, and create. Any contributions you make are greatly appreciated.

1. Fork the Project
2. Create your Feature Branch (git checkout -b feature/AmazingFeature)
3. Commit your Changes (git commit -m 'Add some AmazingFeature')
4. Push to the Branch (git push origin feature/AmazingFeature)
5. Open a Pull Request

📝 License

Distributed under the MIT License. See LICENSE for more information.

👨‍💻 Author

Jason Brashear

🙏 Acknowledgments

• Claude AI - For the amazing AI capabilities
• Model Context Protocol - For the protocol specification
• Protocol Design System - For the modern UI design language
• Tailwind CSS - For the utility-first CSS framework

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