Many advanced use-cases will require writing custom Toolkits. Here’s the general flow:
- Create a class inheriting the
agno.tools.Toolkit class.
- Add your functions to the class.
- Important: Include all the functions in the
tools argument to the Toolkit constructor.
Now your Toolkit is ready to use with an Agent. For example:
from typing import List
from agno.agent import Agent
from agno.tools import Toolkit
from agno.utils.log import logger
class ShellTools(Toolkit):
def __init__(self, **kwargs):
super().__init__(name="shell_tools", tools=[self.run_shell_command], **kwargs)
def run_shell_command(self, args: List[str], tail: int = 100) -> str:
"""
Runs a shell command and returns the output or error.
Args:
args (List[str]): The command to run as a list of strings.
tail (int): The number of lines to return from the output.
Returns:
str: The output of the command.
"""
import subprocess
logger.info(f"Running shell command: {args}")
try:
logger.info(f"Running shell command: {args}")
result = subprocess.run(args, capture_output=True, text=True)
logger.debug(f"Result: {result}")
logger.debug(f"Return code: {result.returncode}")
if result.returncode != 0:
return f"Error: {result.stderr}"
# return only the last n lines of the output
return "\n".join(result.stdout.split("\n")[-tail:])
except Exception as e:
logger.warning(f"Failed to run shell command: {e}")
return f"Error: {e}"
agent = Agent(tools=[ShellTools()], show_tool_calls=True, markdown=True)
agent.print_response("List all the files in my home directory.")
