MCP Calendar Assistant

# MCP Calendar Assistant A powerful Model Context Protocol (MCP) server that provides intelligent calendar and task management capabilities. This server allows AI assistants to interact with your calendar through natural language, handling everything from simple event creation to complex scheduling analysis. ## 🌟 Features ### Core Calendar Operations - **Multi-Calendar Support**: Google Calendar (with Outlook/Apple Calendar planned) - **Event Management**: Create, read, update, delete calendar events - **Smart Scheduling**: Find free time slots across multiple calendars - **Availability Checking**: Check if people are available for meetings - **Meeting Suggestions**: AI-powered optimal meeting time recommendations ### Task & Reminder Management - **Smart Reminders**: Create and manage tasks with priorities and due dates - **Natural Language**: Process tasks from unstructured text input - **Analytics**: Track completion rates and productivity patterns ### Intelligence Features - **Schedule Analysis**: Understand your scheduling patterns and habits - **Contact Suggestions**: Auto-suggest frequent collaborators - **Similar Events**: Find related events for context - **Working Hours**: Respect user preferences and constraints ### Performance & Reliability - **Intelligent Caching**: Redis-powered caching with configurable TTLs - **Batch Operations**: Efficient bulk calendar operations - **Error Handling**: Robust error recovery and retry mechanisms - **Rate Limiting**: Built-in protection against API abuse ## 🏗️ Architecture ``` ┌─────────────────┐ ┌──────────────────┐ ┌─────────────────┐ │ AI Assistant │────│ MCP Calendar │────│ Calendar APIs │ │ (Claude, etc) │ │ Server │ │ (Google, etc) │ └─────────────────┘ └──────────────────┘ └─────────────────┘ │ ┌──────────────────┐ │ PostgreSQL + │ │ Redis │ └──────────────────┘ ``` ## 🚀 Quick Start ### Prerequisites - Node.js 18+ - PostgreSQL 12+ - Redis 6+ (optional but recommended) - Google Cloud Project with Calendar API enabled ### 1. Clone and Install ```bash git clone <repository-url> cd mcp-calendar-server npm install ``` ### 2. Environment Setup ```bash cp .env.example .env # Edit .env with your configuration ``` ### 3. Google Calendar Setup 1. Go to [Google Cloud Console](https://console.cloud.google.com/) 2. Create a new project or select existing 3. Enable the Google Calendar API 4. Create OAuth 2.0 credentials 5. Add your credentials to `.env` ### 4. Database Setup ```bash # Start PostgreSQL and Redis (using Docker) docker-compose up -d postgres redis # Or install locally and create database createdb calendar_assistant ``` ### 5. Build and Start ```bash npm run build npm start # Or for development npm run dev ``` ## 🔧 Configuration ### Environment Variables | Variable | Description | Default | |----------|-------------|---------| | `DATABASE_URL` | PostgreSQL connection string | `postgresql://localhost:5432/calendar_assistant` | | `REDIS_URL` | Redis connection string | `redis://localhost:6379` | | `GOOGLE_CLIENT_ID` | Google OAuth client ID | Required | | `GOOGLE_CLIENT_SECRET` | Google OAuth client secret | Required | | `JWT_SECRET` | Secret for JWT tokens | Required | ### Feature Flags ```env FEATURE_CACHING=true # Enable Redis caching FEATURE_BATCHING=true # Enable batch operations FEATURE_PREFETCHING=true # Enable predictive data loading FEATURE_ANALYTICS=false # Enable usage analytics FEATURE_MULTI_PROVIDER=false # Enable multiple calendar providers ``` ## 📋 Available Tools ### Calendar Operations - `get_calendars` - List available calendars - `get_calendar_events` - Retrieve events from a calendar - `create_calendar_event` - Create new events - `update_calendar_event` - Modify existing events - `delete_calendar_event` - Remove events - `find_free_time` - Find available time slots - `check_availability` - Check if people are free - `suggest_meeting_times` - AI-powered meeting suggestions ### Task Management - `create_reminder` - Create tasks and reminders - `get_reminders` - Retrieve tasks with filtering - `update_reminder` - Modify existing tasks - `complete_reminder` - Mark tasks as completed ### Analytics & Insights - `analyze_schedule_patterns` - Understand scheduling habits - `get_working_hours` - Retrieve work schedule preferences - `get_recent_similar_events` - Find related events - `get_contact_suggestions` - Auto-suggest contacts ## 💬 Usage Examples ### Creating Events ```typescript // AI Assistant can process: "Schedule a dentist appointment next Tuesday at 2pm" "Book a team meeting with John and Sarah for next week, 1 hour duration" "Create a recurring weekly standup every Monday at 9am" ``` ### Finding Free Time ```typescript // AI Assistant can process: "When are we all free next week for a 2-hour workshop?" "Find time for a 30-minute call with the marketing team" "What's my availability on Friday afternoon?" ``` ### Task Management ```typescript // AI Assistant can process: "Remind me to call mom this weekend" "Add a high-priority task to review the Q4 budget by Friday" "Show me all my overdue tasks" ``` ## 🔌 MCP Integration ### With Claude Desktop Add to your `claude_desktop_config.json`: ```json { "mcpServers": { "calendar-assistant": { "command": "node", "args": ["/path/to/mcp-calendar-server/dist/index.js"], "env": { "DATABASE_URL": "postgresql://localhost:5432/calendar_assistant", "GOOGLE_CLIENT_ID": "your-client-id", "GOOGLE_CLIENT_SECRET": "your-client-secret" } } } } ``` ### With Custom Applications ```typescript import { CalendarMCPServer } from 'mcp-calendar-server'; const server = new CalendarMCPServer(); await server.start(); ``` ## 🐳 Docker Deployment ### Using Docker Compose ```bash # Configure environment cp .env.example .env # Edit .env with your settings # Start all services docker-compose up -d # Check logs docker-compose logs -f mcp-calendar-server ``` ### Production Deployment ```bash # Build production image docker build -f docker/Dockerfile -t mcp-calendar-server . # Run with external database docker run -d \ --name calendar-server \ -p 3000:3000 \ -e DATABASE_URL="postgresql://user:pass@host:5432/db" \ -e REDIS_URL="redis://host:6379" \ -e GOOGLE_CLIENT_ID="your-id" \ -e GOOGLE_CLIENT_SECRET="your-secret" \ mcp-calendar-server ``` ## 🔒 Security ### Authentication - JWT-based session management - OAuth 2.0 with Google Calendar - Secure token refresh handling - Session cleanup and expiration ### Data Protection - Environment variable encryption - Database connection encryption - API rate limiting - Input validation and sanitization ### Best Practices - Non-root container execution - Minimal attack surface - Regular security updates - Audit logging ## 📊 Monitoring ### Health Checks ```bash # Check server health curl http://localhost:3000/health # Check database connectivity curl http://localhost:3000/health/db # Check cache connectivity curl http://localhost:3000/health/cache ``` ### Logging Structured JSON logging with configurable levels: - Error tracking and alerting - Performance metrics - Security event logging - Debug information for development ## 🤝 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 ### Development Setup ```bash # Install dependencies npm install # Run tests npm test # Run linter npm run lint # Format code npm run format # Start development server npm run dev ``` ## 🗺️ Roadmap ### Phase 1 (Current) - ✅ Google Calendar integration - ✅ Basic CRUD operations - ✅ Free time finding - ✅ Task management - ✅ Caching layer ### Phase 2 (In Progress) - 🔄 Outlook Calendar integration - 🔄 Advanced scheduling algorithms - 🔄 Natural language time parsing - 🔄 Webhook support for real-time updates ### Phase 3 (Planned) - 📅 Apple Calendar integration - 📅 CalDAV support - 📅 Meeting room booking - 📅 Travel time integration - 📅 Smart conflict resolution ### Phase 4 (Future) - 🔮 Machine learning insights - 🔮 Predictive scheduling - 🔮 Integration with other productivity tools - 🔮 Mobile app companion ## 📄 License This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details. ## 🙏 Acknowledgments - [Model Context Protocol](https://github.com/anthropics/mcp) by Anthropic - [Google Calendar API](https://developers.google.com/calendar) - [PostgreSQL](https://www.postgresql.org/) for reliable data storage - [Redis](https://redis.io/) for high-performance caching ## 📞 Support - 📧 Email: [support@example.com](mailto:support@example.com) - 💬 Discord: [Join our community](https://discord.gg/example) - 📖 Documentation: [docs.example.com](https://docs.example.com) - 🐛 Issues: [GitHub Issues](https://github.com/username/mcp-calendar-server/issues) --- **Made with ❤️ for the MCP community**