多代理MCP演示

Main Agent (customer_service)
├─→ Direct Tool: get_store_hours()
├─→ Direct Tool: get_return_policy()
├─→ AgentTool: inventory_agent
│   └─→ MCPToolset: inventory_mcp
│       ├─→ check_stock(product_id)
│       └─→ get_low_stock_products(threshold)
└─→ AgentTool: shipping_agent
    └─→ MCPToolset: shipping_mcp
        ├─→ track_shipment(tracking_number)
        └─→ get_active_shipments()

Main Agent (customer_service)
└─ execute_tool inventory_agent ✅
   └─ Agent: inventory_agent
      └─ execute_tool check_stock ✅
         └─ MCP Server: Inventory Service
            └─ Returns: {"product_id": "PROD-001", "stock": 45, "in_stock": true}

pip install google-adk fastmcp

cd /home/ubuntu/adk-simple-mcp-demo
export GOOGLE_API_KEY=your-key
adk web --host 0.0.0.0 --port 8004 agents/main_agent

invocation
└─ agent_run [customer_service]
   ├─ call_llm
   └─ execute_tool inventory_agent
      └─ invocation
         └─ agent_run [inventory_agent]
            ├─ call_llm
            └─ execute_tool check_stock
               └─ MCP call to Inventory Service
            └─ call_llm
   └─ call_llm