n8n workflow to MCP server connector

Transform your N8N workflows into MCP servers instantly

A comprehensive platform that converts N8N workflows into Model Context Protocol (MCP) servers, enabling seamless integration with AI assistants like Claude, Cursor, and other MCP-compatible platforms. Build powerful automation tools using N8N's visual workflow editor and deploy them as callable AI functions.

✨ How to use

1. Copy the N8N template link/JSON from any workflow

2. Map your credentials through our intuitive interface

3. Deploy with one click!

Your N8N workflow gets deployed and creates a local hosted MCP server. Just paste the server URL into Claude, Cursor, Super Chain, or any MCP-compatible platform!

🎯 Key Features

🤖 MCP Server Creation

Convert your N8N workflows into MCP servers that AI assistants can use as custom tools

🔄 Dual Architecture

• Agent Marketplace: Web-based workflow management and deployment platform
• MCP Router: High-performance MCP server creation and routing system

🛠️ Comprehensive Workflow Management

• Browse and deploy pre-built workflow templates
• Upload and manage your custom N8N workflows
• Real-time credential configuration and testing
• One-click deployment to your N8N instance

🏗️ Architecture

graph TB
    subgraph "AI Assistant Layer"
        A[Claude/Cursor/Super Chain]
    end
    
    subgraph "N8N 2 MCP"
        B[Agent Marketplace<br/>Flask Web App]
        C[MCP Router<br/>FastAPI Service]
        D[Workflow Parser<br/>Analysis Engine]
    end
    
    subgraph "Infrastructure"
        E[Supabase Database]
        F[N8N Instance]
        G[Credential Manager]
    end
    
    A -->|MCP Protocol| C
    C -->|Dynamic MCP| F
    B -->|Workflow Management| E
    B -->|Deploy & Configure| F
    C -->|User Config| E
    B -->|Parse & Analyze| D
    D -->|Extract Requirements| G
    G -->|Secure Handling| F

📦 Installation

Prerequisites

• Python 3.11+
• N8N Instance (cloud.n8n.io or self-hosted)
• Supabase Account (for data storage)
• Playwright (required for N8N authentication)
• Docker (optional, for containerized deployment)

⚠️ Important: Playwright installation is required for N8N workflow execution. The system will use dummy credentials if Playwright is not properly installed, limiting functionality.

Quick Start

Option 1: Docker Compose (Recommended)

1. Clone the repository

   git clone https://github.com/Super-Chain/N8N2MCP.git
   cd N8N2MCP
   

2. Configure environment

   cp env.example .env
   # Edit .env with your actual configuration values
   

3. Start with Docker Compose

   docker-compose up -d
   

   This starts:

   • Flask App (Agent Marketplace) at: http://localhost:5000
   • MCP Router at: http://localhost:6545

4. View logs

   docker-compose logs -f
   

Option 2: Manual Installation

1. Clone the repository

   git clone https://github.com/Super-Chain/N8N2MCP.git
   cd N8N2MCP
   

2. Install dependencies

   pip install -r requirements.txt
   

3. Install Playwright browsers (Required)

   playwright install
   # This downloads the necessary browser binaries for N8N authentication
   

4. Configure environment

   # Copy and edit the .env file (see Environment Configuration section)
   cp .env.example .env
   

   # Supabase Configuration
   SUPABASE_URL=https://your-project-id.supabase.co
   SUPABASE_KEY=your_supabase_anon_key
   SUPABASE_SERVICE_KEY=your_supabase_service_role_key
   
   # N8N Configuration
   X_N8N_API_KEY=your_n8n_api_key
   N8N_BASE_URL=https://your-n8n-instance.com
   N8N_USERNAME=your_n8n_username
   N8N_PASSWORD=your_n8n_password
   
   # MCP Router Configuration
   N8N_BUILDER_URL=http://localhost:6545
   
   # Server Configuration
   FLASK_HOST=0.0.0.0
   FLASK_PORT=5000
   MCP_HOST=0.0.0.0
   MCP_PORT=6545
   
   # Optional: Authentication credentials (auto-populated)
   N8N_AUTH=
   N8N_BROWSER_ID=   
   

5. Start both servers

   python main.py
   

   This starts:

   • Flask App (Agent Marketplace) at: http://localhost:5000
   • MCP Router at: http://localhost:6545

6. Access to UI Front end : http://localhost:5000

Configuration Notes:

• SUPABASE_URL: Your Supabase project URL
• SUPABASE_KEY: Anon key for client-side operations
• SUPABASE_SERVICE_KEY: Service role key for admin operations
• N8N_BASE_URL: Your N8N instance URL (must include https://)
• N8N_BUILDER_URL: Must include http:// protocol

🔧 Usage

Creating MCP Servers from N8N Workflows

Method 1: Import N8N Templates

1. Browse Templates: Visit the N8N template
2. Import Template: Enter an N8N template URL from n8n.io
3. Configure Credentials: Fill in required API keys and service credentials
4. Deploy Workflow: Click deploy to create the workflow in your N8N instance
5. MCP Server Created: Automatically generates an MCP server endpoint

Method 2: Upload Custom Workflows

1. Upload JSON: Upload your N8N workflow JSON file / Copy and paste your JSON workflow
2. Review Analysis: Check detected nodes and required credentials
3. Configure & Deploy: Fill credentials and deploy to N8N
4. Access MCP Server: Use the generated MCP endpoint in AI tools

Using MCP Servers

# Example MCP server URL format:
http://localhost:6545/mcp/{workflow_id}/{api_key}

# Test MCP server:
curl http://localhost:6545/list  # List all registered MCP servers

🎨 Use Cases

🔍 Data Processing & Analysis

• Transform CSV/Excel files using N8N's data manipulation nodes
• Connect to databases and APIs for real-time data analysis
• Generate reports and visualizations from AI conversations

🌐 API Integration Hub

• Connect AI assistants to external services (Slack, Google, etc.)
• Create custom API endpoints for proprietary systems
• Build unified interfaces for multiple SaaS platforms

📧 Communication & Notifications

• Send emails, Slack messages, or Discord notifications
• Create automated reporting systems
• Build alert systems triggered by AI interactions

🔄 Workflow Automation

• Trigger complex business processes from AI conversations
• Create approval workflows and task management systems
• Build custom integrations with enterprise systems

🛠️ Development

Project Structure

N8N2MCP/
├── main.py                        # Unified server startup script
├── requirements.txt               # Consolidated Python dependencies
├── .env                          # Environment configuration (shared)
│
├── agent_marketplace/             # Flask web application
│   ├── app.py                    # Main Flask app with API endpoints
│   ├── database.py               # Supabase integration & data models
│   ├── n8n_workflow_parser.py    # Workflow analysis engine
│   ├── setup_supabase.py         # Database setup utilities
│   ├── templates/                # HTML templates
│   │   ├── workflows.html        # Main marketplace interface
│   │   └── static/               # CSS, JS assets
│   └── __init__.py               # Python package marker
│
├── mcp_router/                   # FastAPI MCP service
│   ├── mcp_router.py             # Main FastAPI application
│   ├── n8n_credential_extractor.py # N8N authentication
│   ├── credential_helper.py       # Credential management utilities
│   └── __init__.py               # Python package marker
│
└── README.md                     # This documentation

Database Setup

The system uses 2 main tables in Supabase:

Setup

1. Create Supabase Project: Set up a new project at supabase.com
2. Run SQL in Supabase SQL Editor:

-- Main workflow storage table
CREATE TABLE IF NOT EXISTS public.user_workflows (
    id UUID DEFAULT gen_random_uuid() PRIMARY KEY,
    user_id TEXT NOT NULL,
    template_id TEXT NOT NULL,
    template_url TEXT NOT NULL,
    workflow_name TEXT NOT NULL,
    workflow_json JSONB NOT NULL,
    workflow_description TEXT,
    n8n_workflow_id TEXT,
    source TEXT DEFAULT 'user_upload',
    credentials_required JSONB DEFAULT '[]'::jsonb,
    mcp_link TEXT,
    status TEXT DEFAULT 'pending',
    created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
    updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
);

-- MCP server configurations
CREATE TABLE IF NOT EXISTS public.mcp_configs (
    id UUID DEFAULT gen_random_uuid() PRIMARY KEY,
    workflow_id TEXT NOT NULL,
    user_apikey TEXT NOT NULL,
    code TEXT NOT NULL,
    created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
    updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
    UNIQUE(workflow_id, user_apikey)
);

-- Enable Row Level Security (recommended)
ALTER TABLE user_workflows ENABLE ROW LEVEL SECURITY;
ALTER TABLE mcp_configs ENABLE ROW LEVEL SECURITY;

🚀 Running the System

Unified Startup (Recommended)

python main.py

This automatically starts both services with:

• ✅ Environment validation
• ✅ Database setup verification
• ✅ Graceful shutdown handling
• ✅ Centralized logging

Individual Services

Agent Marketplace (Port 5000)

cd agent_marketplace
python app.py

MCP Router (Port 6545)

cd mcp_router
python mcp_router.py

Verification

# Test Agent Marketplace
curl http://localhost:5000/api/health

# Test MCP Router
curl http://localhost:6545/list

# View all endpoints
curl http://localhost:5000/api/health | grep endpoints

🔧 Troubleshooting

Common Issues

Port Already in Use

# Kill processes on ports 5000 and 6545
fuser -k 5000/tcp 6545/tcp
# Or restart with main.py which handles this automatically
python main.py

Database Connection Issues

# Verify Supabase configuration
python -c "from agent_marketplace.database import db_manager; print('✅ Database OK' if db_manager.supabase else '❌ Database connection failed')"

# Reset database tables
python agent_marketplace/setup_supabase.py

MCP Router Not Responding

# Check if MCP Router is running
curl http://localhost:6545/list

# View MCP Router logs
# Logs appear in terminal where main.py was started

N8N Workflow Creation Fails

• Verify N8N_BASE_URL includes https://
• Check X_N8N_API_KEY is valid and has workflow creation permissions
• Ensure N8N instance is accessible from your server

Missing Dependencies

# Install missing packages
pip install playwright
playwright install  # For N8N authentication (required)

# Or install all dependencies
pip install -r requirements.txt

Playwright Browser Issues

# If playwright browsers fail to download
playwright install --force

# For headless environments (servers)
playwright install chromium

# Check if playwright is working
python -c "from playwright.async_api import async_playwright; print('✅ Playwright OK')"

Development Tips

# Enable debug mode for Flask
export FLASK_DEBUG=1

# View detailed MCP Router logs
cd mcp_router && python mcp_router.py --log-level debug

# Test individual components
python -m agent_marketplace.n8n_workflow_parser  # Test parser
python -m mcp_router.mcp_router                  # Test MCP Router

🔐 Security Best Practices

• Credential Management: Never store user credentials server-side
• API Key Rotation: Regularly rotate N8N API keys and Supabase keys
• Network Security: Use HTTPS in production with proper SSL certificates
• Access Control: Implement proper authentication and authorization
• Data Isolation: Ensure proper user data segregation with RLS policies

🤝 Contributing

1. Fork the repository
2. Create a feature branch: git checkout -b feature/amazing-feature
3. Commit your changes: git commit -m 'Add amazing feature'
4. Push to the branch: git push origin feature/amazing-feature
5. Open a Pull Request

📄 License

This project is licensed under the MIT License - see the LICENSE file for details.

📋 Quick Reference

API Endpoints

Agent Marketplace (Port 5000)

• GET / - Main marketplace interface
• GET /api/health - Health check and available endpoints
• POST /api/import-n8n-template-enhanced - Import N8N template
• POST /api/deploy-workflow-to-n8n - Deploy workflow with credentials
• GET /api/user/uploaded-workflows - List user workflows
• GET /api/user/mcp-servers - List active MCP servers

MCP Router (Port 6545)

• GET /list - List all registered MCP servers
• POST /n8n/build - Create MCP server from N8N workflow
• GET /n8n/credentials/status - Check N8N credential status
• /mcp/{workflow_id}/{api_key} - MCP server endpoint

Key File Locations

• Configuration: .env (root directory)
• Main Startup: main.py
• Flask App: agent_marketplace/app.py
• MCP Router: mcp_router/mcp_router.py

🆘 Support

• Issues: GitHub Issues
• Documentation: Check this README and inline code documentation
• Community: Join our community discussions for help and feature requests

🙏 Acknowledgments

• N8N for the amazing workflow automation platform
• Model Context Protocol for enabling AI tool integration
• Supabase for the robust database infrastructure
• FastAPI and Flask for the web frameworks

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Built with ❤️ by the SUPERCHAIN team for the AI automation community