MCP-NG

graph TD
    subgraph "Client Applications"
        A[gRPC Client]
        H[HTTP/REST Client]
    end

    A -->|gRPC Request on port 8090| B(Main MCP Server);
    H -->|HTTP/REST Request on port 8002| B;

    B -->|gRPC Proxy| C{Tool 1 Go};
    B -->|gRPC Proxy| D{Tool 2 Go};
    B -->|gRPC Proxy| E{Tool 3 Python};
    B -->|gRPC Proxy| F[Human Bridge];

    subgraph "Tool Servers"
        C
        D
        E
        F
    end

    style B fill:#ffa500,stroke:#333,stroke-width:2px,color:#000

sequenceDiagram
    participant User
    participant LLM
    participant "MCP Server (gRPC/HTTP)"
    participant Tools

    User->>LLM: Prompt
    LLM->>"MCP Server (gRPC/HTTP)": ListTools() via GET /v1/tools
    "MCP Server (gRPC/HTTP)"-->>LLM: List of available tools
    
    LLM->>LLM: Reason which tool to use
    
    LLM->>"MCP Server (gRPC/HTTP)": RunTool(tool_name, args) via POST /v1/tools:run
    "MCP Server (gRPC/HTTP)"->>Tools: Execute tool via gRPC
    Tools-->>"MCP Server (gRPC/HTTP)": Tool output
    "MCP Server (gRPC/HTTP)"-->>LLM: Observation (tool result)
    
    LLM->>User: Final Answer