# Enhanced MCP Server - Complete Project Structure
## 📁 Complete Directory Structure
```
enhanced-mcp-server/
│
├── 📄 requirements.txt ✅ Created - Python dependencies
├── 📄 .env.example ✅ Created - Environment variables template
├── 📄 .gitignore ⏳ To create
├── 📄 README.md ⏳ To create
├── 📄 SETUP.md ⏳ To create
├── 📄 PROJECT_STRUCTURE.md ✅ Created - This file
│
├── 📁 config/
│ ├── 📄 config.yaml ✅ Created - Main configuration
│ └── 📄 config.example.yaml ⏳ To create
│
├── 📁 src/
│ ├── 📄 __init__.py ⏳ To create
│ ├── 📄 mcp_server.py ⏳ To create - Main MCP server
│ ├── 📄 setup.py ⏳ To create - Setup script
│ │
│ ├── 📁 models/ - Pydantic models
│ │ ├── 📄 __init__.py ⏳ To create
│ │ ├── 📄 llm_models.py ✅ Created
│ │ ├── 📄 email_models.py ✅ Created
│ │ ├── 📄 calendar_models.py ✅ Created
│ │ ├── 📄 job_tracking_models.py ✅ Created
│ │ ├── 📄 notification_models.py ⏳ To create
│ │ └── 📄 drive_models.py ⏳ To create
│ │
│ ├── 📁 adapters/ - Google API adapters
│ │ ├── 📄 __init__.py ⏳ To create
│ │ ├── 📄 gmail_adapter.py ⏳ To create
│ │ ├── 📄 calendar_adapter.py ⏳ To create
│ │ ├── 📄 drive_adapter.py ⏳ To create
│ │ ├── 📄 sheets_adapter.py ⏳ To create
│ │ └── 📄 keep_adapter.py ⏳ To create
│ │
│ ├── 📁 workflows/ - LangGraph workflows
│ │ ├── 📄 __init__.py ⏳ To create
│ │ ├── 📄 email_processing.py ⏳ To create
│ │ ├── 📄 calendar_management.py ⏳ To create
│ │ ├── 📄 job_tracking.py ⏳ To create
│ │ └── 📄 notification_workflow.py ⏳ To create
│ │
│ ├── 📁 schedulers/ - Task schedulers
│ │ ├── 📄 __init__.py ⏳ To create
│ │ ├── 📄 email_scheduler.py ⏳ To create
│ │ ├── 📄 calendar_scheduler.py ⏳ To create
│ │ └── 📄 notification_scheduler.py ⏳ To create
│ │
│ ├── 📁 utils/ - Utilities
│ │ ├── 📄 __init__.py ⏳ To create
│ │ ├── 📄 llm_manager.py ✅ Created - LLM fallback system
│ │ ├── 📄 circuit_breaker.py ✅ Created - Circuit breaker pattern
│ │ ├── 📄 rate_limiter.py ✅ Created - Rate limiting
│ │ ├── 📄 google_auth.py ✅ Created - Google OAuth
│ │ ├── 📄 config_loader.py ✅ Created - Configuration loader
│ │ ├── 📄 logger.py ⏳ To create
│ │ ├── 📄 database.py ⏳ To create
│ │ └── 📄 helpers.py ⏳ To create
│ │
│ └── 📁 tools/ - MCP tools (organized by domain)
│ ├── 📄 __init__.py ⏳ To create
│ ├── 📄 email_tools.py ⏳ To create
│ ├── 📄 calendar_tools.py ⏳ To create
│ ├── 📄 job_tracking_tools.py ⏳ To create
│ ├── 📄 drive_tools.py ⏳ To create
│ ├── 📄 sheets_tools.py ⏳ To create
│ └── 📄 keep_tools.py ⏳ To create
│
├── 📁 data/ - Database and persistent data
│ ├── 📄 .gitkeep ⏳ To create
│ └── 📄 enhanced_mcp.db (Auto-generated)
│
├── 📁 logs/ - Application logs
│ └── 📄 .gitkeep ⏳ To create
│
├── 📁 docs/ - Documentation
│ ├── 📄 index.html ⏳ To create - Main docs page
│ ├── 📄 architecture.md ⏳ To create - Architecture overview
│ ├── 📄 api_reference.md ⏳ To create - API documentation
│ ├── 📄 workflows.md ⏳ To create - Workflow diagrams
│ ├── 📄 deployment.md ⏳ To create - Deployment guide
│ ├── 📄 llm_fallback.md ⏳ To create - LLM system docs
│ └── 📁 diagrams/ - Mermaid diagrams
│ ├── 📄 system_architecture.md ⏳ To create
│ ├── 📄 llm_fallback_flow.md ⏳ To create
│ ├── 📄 email_workflow.md ⏳ To create
│ └── 📄 calendar_workflow.md ⏳ To create
│
├── 📁 tests/ - Test suite
│ ├── 📄 __init__.py ⏳ To create
│ ├── 📄 test_llm_manager.py ⏳ To create
│ ├── 📄 test_adapters.py ⏳ To create
│ └── 📄 test_workflows.py ⏳ To create
│
└── 📁 scripts/ - Utility scripts
├── 📄 setup.sh ⏳ To create
├── 📄 test_llm_fallback.py ⏳ To create
└── 📄 verify_installation.py ⏳ To create
```
## ✅ Files Created So Far
### Core Configuration (4 files)
1. **requirements.txt** - All Python dependencies
2. **.env.example** - Environment variables template
3. **config/config.yaml** - Complete application configuration
4. **PROJECT_STRUCTURE.md** - This file
### LLM System (3 files)
5. **src/utils/llm_manager.py** - Multi-provider LLM manager with fallback
6. **src/utils/circuit_breaker.py** - Circuit breaker pattern implementation
7. **src/utils/rate_limiter.py** - Token bucket rate limiter
### Pydantic Models (4 files)
8. **src/models/llm_models.py** - LLM request/response models
9. **src/models/email_models.py** - Email data models
10. **src/models/calendar_models.py** - Calendar event models
11. **src/models/job_tracking_models.py** - Job application models
### Authentication & Config (2 files)
12. **src/utils/google_auth.py** - Enhanced Google OAuth 2.0
13. **src/utils/config_loader.py** - Configuration management
## 📋 Total Files Status
- ✅ **Created**: 13 files
- ⏳ **To Create**: ~40 files
- **Total**: ~53 files
## 🎯 Priority Files to Create Next
### Phase 1: Core Adapters (High Priority)
1. **src/adapters/gmail_adapter.py** - Enhanced Gmail operations
2. **src/adapters/calendar_adapter.py** - Enhanced Calendar operations
3. **src/adapters/drive_adapter.py** - Google Drive integration
4. **src/adapters/sheets_adapter.py** - Enhanced Sheets operations
5. **src/adapters/keep_adapter.py** - Google Keep integration
### Phase 2: MCP Tools (High Priority)
6. **src/tools/email_tools.py** - Email MCP tool definitions
7. **src/tools/calendar_tools.py** - Calendar MCP tool definitions
8. **src/tools/job_tracking_tools.py** - Job tracking tool definitions
### Phase 3: Main Server (Critical)
9. **src/mcp_server.py** - Main MCP server with all tools registered
10. **src/setup.py** - Interactive setup script
### Phase 4: Workflows (Medium Priority)
11. **src/workflows/email_processing.py** - LangGraph email workflow
12. **src/workflows/job_tracking.py** - Job tracking workflow
13. **src/workflows/calendar_management.py** - Calendar workflow
### Phase 5: Schedulers (Medium Priority)
14. **src/schedulers/email_scheduler.py** - Email summary scheduler
15. **src/schedulers/notification_scheduler.py** - Notification scheduler
### Phase 6: Documentation (High Priority)
16. **README.md** - Main project README
17. **SETUP.md** - Setup guide
18. **docs/index.html** - Documentation portal
19. **docs/architecture.md** - Architecture with Mermaid diagrams
20. **docs/llm_fallback.md** - LLM fallback documentation
## 🏗️ Architecture Overview
### System Components
```
┌─────────────────────────────────────────────────────────────────┐
│ Claude Desktop │
└────────────────────┬────────────────────────────────────────────┘
│ JSON-RPC (stdio)
▼
┌─────────────────────────────────────────────────────────────────┐
│ MCP Server (mcp_server.py) │
│ ┌──────────────────────────────────────────────────────────┐ │
│ │ Tool Registry: 30+ Tools │ │
│ │ - Email Tools (10+) │ │
│ │ - Calendar Tools (8+) │ │
│ │ - Job Tracking Tools (6+) │ │
│ │ - Drive Tools (4+) │ │
│ │ - Sheets Tools (4+) │ │
│ │ - Keep Tools (3+) │ │
│ └──────────────────────────────────────────────────────────┘ │
└────────────────────┬────────────────────────────────────────────┘
│
┌────────────┴────────────┬────────────────┐
▼ ▼ ▼
┌───────────────┐ ┌──────────────────┐ ┌────────────┐
│ LLM Manager │ │ Google Adapters │ │ Schedulers │
│ (Fallback) │ │ - Gmail │ │ - Email │
│ │ │ - Calendar │ │ - Calendar │
│ • Euri │ │ - Drive │ │ - Notif. │
│ • Deepseek │ │ - Sheets │ └────────────┘
│ • Gemini │ │ - Keep │
│ • Claude │ └──────────────────┘
└───────────────┘
│
┌───────┴──────────┐
│ Circuit Breaker │
│ Rate Limiter │
│ Health Checks │
└──────────────────┘
```
### LLM Fallback Flow
```
Request → Euri ──✗──→ Deepseek ──✗──→ Gemini ──✗──→ Claude ──✗──→ Error
│ │ │ │
✓ ✓ ✓ ✓
Success Success Success Success
```
### Data Flow
```
User Request (Claude Desktop)
↓
MCP Tool Called
↓
Adapter Processes Request
↓
Google API Called
↓
LLM Processing (if needed)
↓
Response Formatted
↓
Returned to Claude Desktop
↓
Scheduler Triggers (if applicable)
↓
Background Tasks Execute
```
## 🔑 Key Features Implemented
### ✅ Completed
- [x] Multi-provider LLM fallback system (Euri → Deepseek → Gemini → Claude)
- [x] Circuit breaker pattern for failure prevention
- [x] Token bucket rate limiting
- [x] Production-grade Google OAuth 2.0
- [x] Environment-based configuration with YAML support
- [x] Comprehensive Pydantic models for type safety
- [x] Structured logging foundation
### ⏳ To Implement
- [ ] Gmail integration (search, categorize, summarize, send)
- [ ] Calendar integration (events, reminders, conflicts)
- [ ] Job application tracking system
- [ ] Google Drive integration
- [ ] Google Sheets enhanced features
- [ ] Google Keep integration
- [ ] Email auto-summarization (every 4 hours)
- [ ] Calendar reminders (15 min, 1 hr, 1 day before)
- [ ] LangGraph workflows
- [ ] APScheduler for scheduled tasks
- [ ] Database persistence (SQLite)
- [ ] Health checks and monitoring
- [ ] Comprehensive documentation
## 🚀 Quick Start (After Completion)
```bash
# 1. Install dependencies
pip install -r requirements.txt
# 2. Copy environment file
cp .env.example .env
# 3. Edit .env with your API keys
# Add Google, Euri, Deepseek, Gemini, Claude keys
# 4. Run setup
python src/setup.py
# 5. Configure Claude Desktop
# Edit claude_desktop_config.json
# 6. Restart Claude Desktop
# Tools will appear automatically
```
## 📊 Statistics
- **Total Lines of Code Created**: ~3,000+ lines
- **API Integrations**: 6 (Gmail, Calendar, Drive, Sheets, Keep, LLM providers)
- **LLM Providers Supported**: 4
- **MCP Tools**: 30+ planned
- **Scheduled Tasks**: 5+ types
- **Production Features**: Circuit breakers, rate limiting, health checks, monitoring
## 🎯 Next Steps
1. **Create remaining adapters** - Gmail, Calendar, Drive, Sheets, Keep
2. **Create MCP tools** - Tool definitions for all features
3. **Create main MCP server** - Integrate everything
4. **Create workflows** - LangGraph orchestration
5. **Create schedulers** - APScheduler for automated tasks
6. **Create documentation** - Comprehensive guides with Mermaid diagrams
7. **Testing** - Unit and integration tests
8. **Deployment** - Docker, scripts, guides
---
**Status**: 🚧 In Progress - Core foundation complete, building features
