n8n Lexware Office Custom Node

A comprehensive n8n custom node for seamless integration with the Lexware Office API. This node provides full access to all major business resources including articles, contacts, invoices, orders, payments, and more, with advanced features like EU tax compliance, smart filtering, and comprehensive error handling.

🚀 Quick Start

Prerequisites

• n8n: Version 0.125.0 or higher
• Node.js: Version 18.0.0 or higher
• Lexware Office API: Valid API credentials

Installation

Method 1: NPM Install (Recommended)

cd ~/.n8n/custom
npm install @pixelandprocess_de/n8n-nodes-lexware-office

Note: The package will be installed as @pixelandprocess_de/n8n-nodes-lexware-office in your custom nodes directory.

Method 2: Manual Installation

git clone https://github.com/fwartner/n8n-nodes-lexware-office.git
cd n8n-nodes-lexware-office
npm install && npm run build
cp -r dist ~/.n8n/custom/@pixelandprocess_de/n8n-nodes-lexware-office

Method 3: Docker Installation

volumes:
  - ./custom-nodes:/home/node/.n8n/custom
environment:
  - N8N_CUSTOM_EXTENSIONS=/home/node/.n8n/custom

Then install the package in the custom-nodes directory:

mkdir -p custom-nodes
cd custom-nodes
npm install @pixelandprocess_de/n8n-nodes-lexware-office
docker-compose restart n8n

Method 4: GitHub Installation

For developers or users who want the latest features:

cd ~/.n8n/custom
git clone https://github.com/fwartner/n8n-nodes-lexware-office.git
cd n8n-nodes-lexware-office
npm install && npm run build
cp -r dist ../@pixelandprocess_de/n8n-nodes-lexware-office

See GitHub Installation Guide for detailed instructions.

Configuration

1. Restart n8n after installation
2. Add credentials for your Lexware Office API
3. Use the node in your workflows

✨ Features

• 🔗 Full API Coverage: All major Lexware Office resources supported
• 🌍 EU Tax Compliance: Built-in support for European business requirements
• 🔍 Smart Filtering: Advanced search and filtering capabilities
• 📊 Status Management: Comprehensive status tracking and transitions
• 📄 Document Generation: PDF rendering and file download support
• ⚡ Performance: Optimized with rate limiting and caching
• 🛡️ Error Handling: Robust error management and validation
• 🔧 Type Safety: Full TypeScript support with comprehensive interfaces

📦 Supported Resources

| Resource | Operations | Description | |----------|------------|-------------| | 📋 Articles | CRUD + Specialized | Product and service management | | 👥 Contacts | CRUD + Specialized | Customer and vendor management | | 🌍 Countries | CRUD + Specialized | Geographic and tax information | | 🧾 Invoices | CRUD + Specialized | Full lifecycle management | | 📋 Orders | CRUD + Specialized | Order confirmation and documents | | 💰 Payments | CRUD + Specialized | Payment processing and tracking | | 📝 Quotations | CRUD + Specialized | Quote management and conversion | | 📊 Vouchers | CRUD + Specialized | Accounting voucher handling | | 📁 Files | CRUD + Specialized | Document management and metadata | | ⏰ Dunnings | CRUD + Specialized | Payment reminder management | | 🚚 Delivery Notes | CRUD + Specialized | Delivery tracking and management | | 💳 Credit Notes | CRUD + Specialized | Credit and refund management | | 💸 Down Payment Invoices | CRUD + Specialized | Partial payment handling | | 🔔 Event Subscriptions | CRUD + Specialized | Webhook and event management | | ⏱️ Payment Conditions | CRUD + Specialized | Payment terms and conditions | | 🏷️ Posting Categories | CRUD + Specialized | Accounting categorization | | 🎨 Print Layouts | CRUD + Specialized | Document formatting and templates | | 👤 Profiles | CRUD + Specialized | User and system profiles | | 🔄 Recurring Templates | CRUD + Specialized | Automated recurring operations | | 🚀 Triggers | Webhook Events | Real-time event monitoring and webhooks |

🎯 Available Operations

| Operation | Description | Resources | |-----------|-------------|-----------| | Create | Create new resources | All resources | | Get | Retrieve single resource | All resources | | Get All | List resources with filtering | All resources | | Update | Modify existing resources | All resources | | Delete | Remove resources | All resources | | Specialized | Resource-specific operations | Varies by resource | | Webhook Triggers | Real-time event monitoring | All business events |

🔔 Webhook Triggers & Events

The Lexware Office Trigger Node provides real-time event monitoring capabilities for your workflows:

Event Types Supported

• Contact Events: contact.created, contact.updated, contact.deleted
• Invoice Events: invoice.created, invoice.status.changed, invoice.paid, invoice.overdue
• Quotation Events: quotation.created, quotation.accepted, quotation.rejected
• Payment Events: payment.received, payment.processed
• Article Events: article.created, article.updated, article.deleted
• File Events: file.uploaded
• Dunning Events: dunning.created, dunning.status.changed

Advanced Features

• Smart Filtering: Filter by contact ID, voucher type, status, amount, and date ranges
• Webhook Security: HMAC-SHA256 signature verification
• Retry Mechanism: Automatic retry of failed deliveries
• Event Logging: Comprehensive monitoring and statistics

Use Cases

• Automated Customer Communication: Welcome emails, payment confirmations
• Invoice Processing: Status updates, payment reconciliation
• Sales Follow-up: Quotation management, opportunity tracking
• Document Management: File processing, automated workflows

📖 Complete Trigger Documentation - Detailed webhook trigger guide

🏗️ Project Structure

n8n-lexware-office/
├── 📁 dist/                    # Compiled JavaScript files
├── 📁 nodes/                   # Node implementations
│   └── 📁 LexwareOffice/      # Main node with SVG icon
│       ├── LexwareOffice.node.ts      # Main node implementation
│       └── LexwareOfficeTrigger.node.ts # Webhook trigger node
├── 📁 credentials/             # Credential types
├── 📁 resources/               # API resource handlers
├── 📁 utils/                   # Utility functions
├── 📁 types/                   # TypeScript type definitions
├── 📁 constants/               # Constants and enums
├── 📁 scripts/                 # Build scripts
├── 📄 package.json             # Package configuration
├── 📄 tsconfig.json            # TypeScript configuration
├── 📄 README.md                # This file
├── 📄 INSTALLATION.md          # Installation guide
├── 📄 LICENSE                  # MIT license
├── 📄 .eslintrc.js            # ESLint configuration
├── 📄 .prettierrc             # Prettier configuration
└── 📁 .github/                 # GitHub configurations

🔧 Advanced Features

Smart Filtering

• Multi-criteria filtering with AND/OR logic
• Text-based search across multiple fields
• Date range filtering with timezone support
• Custom field filtering for extended data

EU Tax Compliance

• XRechnung support for German e-invoices
• EU country detection and tax rate management
• Distance sales support for cross-border operations
• Tax classification with automatic validation

Error Handling

• Comprehensive error codes with detailed messages
• HTTP status handling with proper error responses
• Rate limiting with automatic retry logic
• Validation errors with field-specific messages

📚 Documentation

• 📖 Installation Guide - Complete setup instructions
• 🐙 GitHub Installation - Install directly from GitHub
• 🔧 API Reference - Detailed operation documentation
• 🚀 Quick Start - Get up and running fast
• 🏗️ Project Structure - Code organization
• 📋 Supported Resources - Available functionality
• 🔔 Webhook Triggers - Complete trigger and event documentation

🛠️ Development

Setup

git clone https://github.com/fwartner/n8n-nodes-lexware-office.git
cd n8n-nodes-lexware-office
npm install

Available Scripts

| Script | Description | |--------|-------------| | npm run build | Build the project | | npm run dev | Watch mode for development | | npm run clean | Clean build artifacts | | npm run lint | Run ESLint | | npm run lint:fix | Fix ESLint issues | | npm run format | Format code with Prettier | | npm run format:check | Check code formatting | | npm test | Run tests (placeholder) |

Building for Production

npm run clean
npm run build
npm pack --dry-run  # Test package creation

Testing

# Build and test package
npm run build
npm pack --dry-run

# Verify dist folder contents
ls -la dist/

🤝 Contributing

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

• 🐛 Report Bugs: Use our Bug Report Template
• 💡 Request Features: Use our Feature Request Template
• 🔧 Submit PRs: Follow our Pull Request Template
• 📚 Improve Docs: Help make our documentation better

📄 License

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

🆘 Support

• 📖 Documentation: Check our Installation Guide
• 💬 GitHub Issues: Report problems or request features
• 🌐 n8n Community: Visit the n8n Community Forum
• 📧 Email: Contact us at [email protected]

🌟 Why Choose This Node?

• 🔒 Enterprise Ready: Production-grade with comprehensive error handling
• 🌍 EU Compliant: Built-in support for European business requirements
• 📊 Comprehensive: Covers all major Lexware Office resources
• 🚀 Performance: Optimized with smart caching and rate limiting
• 🛡️ Reliable: Robust error handling and validation
• 🔧 Maintainable: Clean, well-documented TypeScript code
• 🤝 Community: Open source with active community support

📊 Statistics

• 12+ Business Resources supported
• 50+ Operations available
• 25+ Event Types for webhook triggers
• 100% TypeScript codebase
• MIT License for maximum flexibility
• Active Development with regular updates
• Community Driven with open contribution

⭐ Star This Repository

If this project helps you, please give it a star! It motivates us to keep improving and adding new features.

📞 Contact

• Author: Florian Wartner
• Email: [email protected]
• GitHub: @fwartner
• Website: pixelandprocess.de

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