定義多個工具

Designing Agentic Systems with LangChain

Dilini K. Sumanapala, PhD

Founder & AI Engineer, Genverv, Ltd.

整合多個工具

具有多個工具的機器人

   

  • 新增多個自訂工具

  • 依查詢自動選工具

Designing Agentic Systems with LangChain

強化教育聊天機器人

坐在大書本上閱讀的人們。

 

  • 查詢歷史事件

  • 檢查回文：

     

    • level = level

    • top spot = tops pot

Designing Agentic Systems with LangChain

打造工具的多種方式

 

  • 呼叫 LLM

    用自然語言查詢歷史日期，例如「5th of November」
      Agent: The 5th of November is famous for the Gunpowder treason and 
  plot...

  • Python 程式碼

    直接比較字串以找回文，例如 string == string[::-1]
      Agent: Yes, "madam" is a palindrome...
Designing Agentic Systems with LangChain

歷史事件工具

# 使用裝飾器標記工具，並將輸入格式設為字串
@tool

def date_checker(date: str) -> str:

    """Provide a list of important historical events for a given date in any format."""

    try:
          # 呼叫 LLM 解析日期並產生歷史事件
        answer = llm.invoke(f"List important historical events that occurred on {date}.")


        # 回傳回應
        return answer.content


    # 針對擷取錯誤設定例外處理
    except Exception as e:
        return f"Error retrieving events: {str(e)}"
Designing Agentic Systems with LangChain

回文工具

@tool

# 將輸入格式設為字串
def check_palindrome(text: str):

    """Check if a word or phrase is a palindrome."""


    # 去除非英數字元並轉為小寫
    cleaned = ''.join(char.lower() for char in text if char.isalnum())


    # 檢查反轉後是否與原字串相同
    if cleaned == cleaned[::-1]:
        return f"The phrase or word '{text}' is a palindrome."
    else:
        return f"The phrase or word '{text}' is not a palindrome."
Designing Agentic Systems with LangChain

綁定多個工具

# 匯入定義工具節點所需的模組
from langgraph.prebuilt import ToolNode


# 工具清單
tools = [wikipedia_tool, date_checker, check_palindrome]


# 將工具傳入 ToolNode()
tool_node = ToolNode(tools)


# 將工具綁定到 LLM
model_with_tools = llm.bind_tools(tools)
Designing Agentic Systems with LangChain

一起來練習吧！

Designing Agentic Systems with LangChain

Preparing Video For Download...