Fusion AI Node for n8n

A production-ready n8n community node package that provides seamless integration with Fusion AI's NeuroSwitch multi-provider orchestration platform.

🚀 Features

• Multi-Provider AI Access: Connect to OpenAI, Anthropic, Google, and other AI providers through a single unified interface
• NeuroSwitch Auto-Routing: Intelligent automatic provider selection based on availability and performance
• LangChain Integration: Full compatibility with n8n's AI Agent workflows and tool calling
• Secure Credentials: API keys are stored securely with noData: true protection
• Production Ready: Built with TypeScript, strict type checking, and comprehensive error handling

📦 Installation

From npm (Recommended)

npm install fusion-node

From Source

git clone https://github.com/Fusionaimcp4/n8n-nodes-fusion.git
cd n8n-nodes-fusion
npm install
npm run build

In n8n

1. Install the package in your n8n instance
2. Restart n8n
3. The Fusion AI nodes will appear in the node palette

🔧 Setup

1. Get Your Fusion API Key

1. Visit Fusion AI Platform
2. Sign up for an account
3. Generate your API key from the dashboard

2. Configure Credentials in n8n

Step-by-Step Credential Setup:

1. Open n8n: Navigate to your n8n instance
2. Go to Credentials: Click on "Credentials" in the left sidebar
3. Add New Credential: Click the "+" button or "Add Credential"
4. Search for Fusion: Type "Fusion API" in the search box
5. Select Fusion API: Click on "Fusion API" from the results
6. Enter Your Details:
   • API Key: Paste your Fusion AI API key
   • Base URL: Leave as default (https://api.mcp4.ai) or enter custom URL
7. Test Connection: Click "Test" to verify your credentials work
8. Save: Click "Save" to store your credentials
9. Name Your Credential: Give it a descriptive name like "Fusion AI Production"

Credential Fields Explained:

• API Key (Required): Your Fusion AI API key for authentication

  • Get this from your Fusion AI dashboard
  • Keep this secure and never share it publicly
  • The field is password-protected for security

• Base URL (Optional): The base URL for the Fusion AI API

  • Default: https://api.mcp4.ai
  • Only change if using a custom Fusion AI instance
  • Must include the protocol (https://)

Security Best Practices:

• Environment Variables: In production, use environment variables for API keys
• Credential Naming: Use descriptive names to identify different environments
• Access Control: Limit API key permissions to necessary scopes only
• Regular Rotation: Periodically rotate your API keys for enhanced security
• Monitoring: Monitor API usage and costs through the Fusion AI dashboard

Troubleshooting Credentials:

"Invalid API Key" Error:

• Verify the API key is correct and active
• Check for extra spaces or characters
• Ensure the API key hasn't expired

"Connection Failed" Error:

• Verify your internet connection
• Check if the Base URL is correct
• Ensure your firewall allows HTTPS connections to api.mcp4.ai

"Test Connection Failed":

• Double-check your API key
• Verify the Base URL is accessible
• Check n8n logs for detailed error messages

🎯 Usage

Fusion Chat Model Node (AI Agent Integration)

The primary node for AI Agent workflows:

1. Add Node: Drag "Fusion Chat Model" from the node palette
2. Select Model: Choose from available providers:
   • NeuroSwitch (auto routing) - Recommended
   • OpenAI: GPT-4, GPT-3.5-turbo
   • Anthropic: Claude 3 Sonnet, Claude 3 Haiku
   • Google: Gemini Pro, Gemini Pro Vision
3. Configure Options:
   • Temperature: 0.0-1.0 (default: 0.3)
   • Max Tokens: 1-4096 (default: 1024)
4. Connect to AI Agent: Use as a Language Model in AI Agent workflows

Example AI Agent Workflow

{
  "nodes": [
    {
      "name": "Fusion Chat Model",
      "type": "fusionChatModel",
      "parameters": {
        "model": "neuroswitch",
        "options": {
          "temperature": 0.3,
          "maxTokens": 1024
        }
      }
    },
    {
      "name": "AI Agent",
      "type": "aiAgent",
      "parameters": {
        "languageModel": "={{ $('Fusion Chat Model').item.json.response }}"
      }
    }
  ]
}

🔒 Security

Credential Protection

• API Keys: Stored securely with noData: true protection
• No Data Persistence: Credentials are not logged or stored in plain text
• Secure Transmission: All API calls use HTTPS encryption

Best Practices

1. Environment Variables: Use environment variables for API keys in production
2. Access Control: Limit API key permissions to necessary scopes
3. Monitoring: Monitor API usage and costs through Fusion AI dashboard
4. Rotation: Regularly rotate API keys for enhanced security

Reporting Security Issues

If you discover a security vulnerability, please do not open a public GitHub issue. Instead:

• Email: security@mcp4.ai
• Response Time: We aim to respond within 24-48 hours
• See: SECURITY.md for detailed reporting guidelines

🛠️ Development

Prerequisites

• Node.js >= 18.0.0
• npm or yarn
• TypeScript knowledge

Building from Source

# Clone repository
git clone https://github.com/Fusionaimcp4/n8n-nodes-fusion.git
cd n8n-nodes-fusion

# Install dependencies
npm install

# Build the project
npm run build

# Run linting
npm run lint

# Format code
npm run format

Project Structure

├── dist/                    # Built files (production)
├── nodes/Fusion/           # Source TypeScript files
│   ├── FusionChatModel.node.ts    # Main AI Agent node
│   ├── FusionApi.credentials.ts   # Credential configuration
│   └── fusion.svg                # Node icon
├── package.json           # Package configuration
├── tsconfig.json         # TypeScript configuration
└── README.md             # This file

📊 Supported Models

OpenAI

• GPT-4
• GPT-4 Turbo
• GPT-3.5-turbo
• GPT-3.5-turbo-16k

Anthropic

• Claude 3 Sonnet
• Claude 3 Haiku
• Claude 3 Opus

Google

• Gemini Pro
• Gemini Pro Vision

Auto-Routing (NeuroSwitch)

• Automatically selects the best available provider
• Handles failover and load balancing
• Optimizes for cost and performance

🐛 Troubleshooting

Common Issues

"Invalid model ID" Error

• Ensure the model string format is correct: provider:model_id
• Check that the model is active in your Fusion AI account

"Could not resolve parameter dependencies" Error

• This has been fixed in the latest version
• Update to the latest package version

Connection Timeout

• Verify your API key is correct
• Check your internet connection
• Ensure the base URL is accessible

Debug Mode

Enable debug logging in n8n to see detailed error messages:

N8N_LOG_LEVEL=debug npm start

📈 Performance

Optimization Tips

1. Use NeuroSwitch: Automatic routing optimizes for speed and cost
2. Batch Requests: Process multiple items in a single workflow execution
3. Cache Results: Store frequently used responses
4. Monitor Usage: Track token consumption and costs

Rate Limits

• Fusion AI handles rate limiting automatically
• NeuroSwitch provides intelligent queuing
• Respect individual provider rate limits

🤝 Contributing

We welcome contributions! Please see our Contributing Guidelines for details.

Development Setup

1. Fork the repository
2. Create a feature branch
3. Make your changes
4. Add tests if applicable
5. Submit a pull request

📄 License

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

🆘 Support

• Documentation: Fusion AI API Docs
• Issues: GitHub Issues
• Discussions: GitHub Discussions
• Email: support@mcp4.ai

🔄 Changelog

v0.1.4

• Initial release
• Fusion Chat Model node for AI Agent integration
• Multi-provider support (OpenAI, Anthropic, Google)
• NeuroSwitch auto-routing
• Secure credential handling
• Production-ready build system

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Made with ❤️ by the Fusion AI team