Architecture Overview 🏗️

This document describes the architecture of the MCP Server, explaining how different components work together to provide a bridge between Home Assistant and custom automation tools.

System Architecture

graph TD
    subgraph "Client Layer"
        WC[Web Clients]
        MC[Mobile Clients]
    end

    subgraph "MCP Server"
        API[API Gateway]
        SSE[SSE Manager]
        WS[WebSocket Server]
        CM[Command Manager]
    end

    subgraph "Home Assistant"
        HA[Home Assistant Core]
        Dev[Devices & Services]
    end

    WC --> |HTTP/WS| API
    MC --> |HTTP/WS| API

    API --> |Events| SSE
    API --> |Real-time| WS

    API --> HA
    HA --> API

Core Components

API Gateway

• Handles incoming HTTP and WebSocket requests
• Provides endpoints for device management
• Implements basic authentication and request validation

SSE Manager

• Manages Server-Sent Events for real-time updates
• Broadcasts device state changes to connected clients

WebSocket Server

• Provides real-time, bidirectional communication
• Supports basic device control and state monitoring

Command Manager

• Processes device control requests
• Translates API commands to Home Assistant compatible formats

Communication Flow

1. Client sends a request to the MCP Server API
2. API Gateway authenticates the request
3. Command Manager processes the request
4. Request is forwarded to Home Assistant
5. Response is sent back to the client via API or WebSocket

Key Design Principles

• Simplicity: Lightweight, focused design
• Flexibility: Easily extendable architecture
• Performance: Efficient request handling
• Security: Basic authentication and validation

Limitations

• Basic device control capabilities
• Limited advanced automation features
• Minimal third-party integrations

Future Improvements

• Enhanced error handling
• More robust authentication
• Expanded device type support

Architecture is subject to change as the project evolves.