Content
# Travel-_Planner_Using_A2A_AG_UI
Creating a Travel Planner Multi agent system using A2A, AG-UI, Crewwai,Google ADK and Langgraph
<img width="1597" height="866" alt="image" src="https://github.com/user-attachments/assets/dc2951bf-4d7d-4da9-9379-60de30201608" />
<img width="1562" height="866" alt="image" src="https://github.com/user-attachments/assets/35b5b556-f3e4-4e98-94a2-8d537e28399a" />
<img width="1527" height="747" alt="image" src="https://github.com/user-attachments/assets/6316b96c-1d4c-4777-926e-0af678dc49d8" />
```
Travel-Planner-Multi-Agent-A2A/
└── travel_planning_system/
├── 📋 **Core System Files**
│ ├── README.md # Main system documentation
│ ├── ARCHITECTURE.md # System architecture overview
│ ├── ARCHITECTURE_DIAGRAM.md # Mermaid architecture diagrams
│ ├── WORKFLOW.md # Complete A2A workflow documentation
│ ├── A2A_IMPLEMENTATION_README.md # A2A protocol implementation guide
│ ├── COMPLETE_WORKFLOW_DIAGRAM.md # Complete workflow diagrams
│ ├── DETAILED_WORKFLOW.md # Detailed workflow documentation
│ └── QUICK_REFERENCE.md # Quick reference guide
│
├── 🚀 **AG-UI System (Port 8000)**
│ ├── ag_ui_travel_server.py # Main AG-UI FastAPI server
│ ├── ag_ui_config.py # AG-UI configuration settings
│ ├── ag_ui_requirements.txt # AG-UI dependencies
│ ├── start_ag_ui_server.py # AG-UI startup script
│ ├── AG_UI_README.md # AG-UI documentation
│ └── AG_UI_IMPLEMENTATION_SUMMARY.md # AG-UI implementation summary
│
├── 🧠 **Travel Planner Agent (Google ADK - Port 10001)**
│ └── travel_planner_agent_adk/
│ ├── 📁 **Core Agent Files**
│ │ ├── simple_executor.py # Main FastAPI executor
│ │ ├── simple_a2a_executor.py # A2A protocol executor
│ │ ├── simple_a2a_agent.py # A2A agent implementation
│ │ ├── simple_travel_planner.py # Simplified travel planner
│ │ └── simple_executor_with_logging.py # Logging-enabled executor
│ │
│ ├── 📁 **Advanced Agent (travel_planner/)**
│ │ ├── __init__.py # Package initialization
│ │ ├── agent.py # Google ADK Travel Planner Agent
│ │ └── remote_agent_connection.py # A2A connection management
│ │
│ ├── 📁 **Configuration & Dependencies**
│ │ ├── pyproject.toml # Project configuration
│ │ ├── requirements.txt # Python dependencies
│ │ ├── uv.lock # UV lock file
│ │ └── create_env_file.py # Environment setup
│ │
│ ├── 📁 **Testing & Logging**
│ │ ├── test_travel_planner.py # Agent testing
│ │ ├── test_logging.py # Logging tests
│ │ └── agent_communication_log.json # A2A communication logs
│ │
│ └── 📁 **Version Directories**
│ ├── 0.2.0/ # Version 0.2.0 dependencies
│ ├── 0.3.0/ # Version 0.3.0 dependencies
│ ├── 1.2.1/ # Version 1.2.1 dependencies
│ └── 1.6.0/ # Version 1.6.0 dependencies
│
├── 🏨 **Hotel Booking Agent (CrewAI - Port 10002)**
│ └── hotel_booking_agent_crewai/
│ ├── 📁 **Core Agent Files**
│ │ ├── agent.py # CrewAI Hotel Booking Agent
│ │ ├── simple_hotel_agent.py # Simplified hotel agent
│ │ ├── simple_hotel_executor.py # Simplified executor
│ │ ├── a2a_hotel_executor.py # A2A protocol executor
│ │ └── simple_hotel_agent_with_logging.py # Logging-enabled agent
│ │
│ ├── 📁 **MCP Servers (servers/)**
│ │ ├── hotel_search_mcp_server.py # Hotel search MCP server
│ │ ├── hotel_booking_mcp_server.py # Hotel booking MCP server
│ │ └── serper_config.py # SerperAPI configuration
│ │
│ ├── 📁 **Configuration & Dependencies**
│ │ ├── pyproject.toml # Project configuration
│ │ ├── requirements.txt # Python dependencies
│ │ ├── uv.lock # UV lock file
│ │ └── create_env_file.py # Environment setup
│ │
│ ├── 📁 **Testing & Utilities**
│ │ ├── test_hotel_agent.py # Hotel agent testing
│ │ ├── test_hotel_search.py # Hotel search testing
│ │ ├── test_tools_direct.py # Direct tool testing
│ │ ├── test_location_fix.py # Location fix testing
│ │ ├── quick_test.py # Quick functionality test
│ │ └── agent_executor.py # Agent executor
│ │
│ └── 📁 **Version Directories**
│ ├── 0.2.0/ # Version 0.2.0 dependencies
│ ├── 0.3.0/ # Version 0.3.0 dependencies
│ └── 0.70.0/ # Version 0.70.0 dependencies
│
├── 🚗 **Car Rental Agent (LangGraph - Port 10003)**
│ └── car_rental_agent_langgraph/
│ ├── 📁 **Core Agent Files**
│ │ ├── simple_car_agent.py # Simplified car agent
│ │ ├── a2a_car_executor.py # A2A protocol executor
│ │ └── car_rental_agent.log # Agent execution logs
│ │
│ ├── 📁 **App Directory (app/)**
│ │ ├── __init__.py # Package initialization
│ │ ├── __main__.py # Main entry point
│ │ ├── agent.py # LangGraph Car Rental Agent
│ │ ├── agent_executor.py # Agent executor
│ │ ├── simple_car_agent.py # Simplified car agent
│ │ ├── simple_car_executor.py # Simplified executor
│ │ └── simple_executor.py # Main executor
│ │
│ ├── 📁 **Configuration & Dependencies**
│ │ ├── pyproject.toml # Project configuration
│ │ ├── requirements.txt # Python dependencies
│ │ ├── uv.lock # UV lock file
│ │ └── create_env_file.py # Environment setup
│ │
│ ├── 📁 **Testing & Debugging**
│ │ ├── test_agent_direct.py # Direct agent testing
│ │ ├── test_car_agent.py # Car agent testing
│ │ ├── test_endpoints.py # Endpoint testing
│ │ ├── test_without_search.py # Testing without search
│ │ ├── check_dependencies.py # Dependency checking
│ │ └── debug_env.py # Environment debugging
│ │
│ └── 📁 **Version Directories**
│ ├── 0.2.0/ # Version 0.2.0 dependencies
│ ├── 0.3.0/ # Version 0.3.0 dependencies
│ ├── 0.5.0/ # Version 0.5.0 dependencies
│ └── 2.0.0/ # Version 2.0.0 dependencies
│
├── 🛠️ **System Management & Setup**
│ ├── start_complete_system.py # Complete system startup
│ ├── start_a2a_agents.py # A2A agents startup
│ ├── start_a2a_agents_fixed.bat # Windows batch startup
│ ├── start_agents_manually.py # Manual agent startup
│ ├── start_all_agents.bat # All agents batch startup
│ ├── install_dependencies.py # Dependency installation
│ ├── install_dependencies.bat # Windows batch installation
│ ├── setup_env.py # Environment setup
│ ├── setup_uv_environments.py # UV environment setup
│ ├── quick_fix.py # Quick system fixes
│ └── logging_config.py # Logging configuration
│
├── 🧪 **Testing & Debugging**
│ ├── test_ag_ui_integration.py # AG-UI integration testing
│ ├── test_api_key_direct.py # API key testing
│ ├── test_serper_fix.py # SerperAPI testing
│ ├── debug_serper_api.py # SerperAPI debugging
│ └── streamlit_travel_app.py # Streamlit test app
│
├── 📚 **Documentation & References**
│ ├── INSTALLATION.md # Installation guide
│ ├── QUICK_START.md # Quick start guide
│ ├── UV_SETUP.md # UV setup guide
│ ├── Multi-Agent Travel Planner.pdf # PDF documentation
│ └── Multi-Agent Travel Planner1.pdf # Additional PDF docs
│
├── 📦 **Dependencies & Configuration**
│ ├── streamlit_requirements.txt # Streamlit dependencies
│ └── __pycache__/ # Python cache files
│
└── 📄 **System Logs & Data**
└── agent_communication_log.json # A2A communication logs
```
