flowchart LR
    subgraph User
        A[👤 You]
    end
    
    subgraph Upsonic
        B[🤖 AI Agent]
    end
    
    subgraph UCP
        C[🔌 UCP Tools]
    end
    
    subgraph Merchant
        D[🏪 Shop API]
        E[(📦 Products)]
        F[(🛒 Orders)]
    end
    
    A -->|Chat| B
    B -->|Tool Calls| C
    C -->|API Requests| D
    D --> E
    D --> F
    D -->|Response| C
    C -->|Results| B
    B -->|Answer| A