tools/read_file_tool.py

from langchain.tools import tool

@tool
def read_file_tool(file_path: str) -> str:
    """
    Tool to read a file and return its content.

    Args:
        file_path (str): Path to the file to read.

    Returns:
        str: Content of the file or error message.
    """

    try:
        with open(file_path, "r") as file:
            return file.read()
    except Exception as e:
        return f"Error reading file: {str(e)}"