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47e1cf464f
* Update tool use examples to use inner agents rather than subclassing * fix * Merge remote-tracking branch 'origin/main' into ekzhu-update-tool-use-example
87 lines
3.1 KiB
Python
87 lines
3.1 KiB
Python
"""
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This example show case how to intercept the tool execution using
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intervention hanlder.
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The intervention handler is used to intercept the FunctionCall message
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before it is sent out, and prompt the user for permission to execute the tool.
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"""
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import asyncio
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import os
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import sys
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from typing import Any, List
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from agnext.application import SingleThreadedAgentRuntime
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from agnext.components import FunctionCall
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from agnext.components.code_executor import LocalCommandLineCodeExecutor
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from agnext.components.models import SystemMessage
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from agnext.components.tool_agent import ToolAgent, ToolException
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from agnext.components.tools import PythonCodeExecutionTool, Tool
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from agnext.core import AgentId
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from agnext.core.intervention import DefaultInterventionHandler, DropMessage
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sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), "..")))
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from coding_direct import Message, ToolUseAgent
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from common.utils import get_chat_completion_client_from_envs
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class ToolInterventionHandler(DefaultInterventionHandler):
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async def on_send(self, message: Any, *, sender: AgentId | None, recipient: AgentId) -> Any | type[DropMessage]:
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if isinstance(message, FunctionCall):
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# Request user prompt for tool execution.
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user_input = input(
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f"Function call: {message.name}\nArguments: {message.arguments}\nDo you want to execute the tool? (y/n): "
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)
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if user_input.strip().lower() != "y":
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raise ToolException(content="User denied tool execution.", call_id=message.id)
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return message
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async def main() -> None:
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# Create the runtime with the intervention handler.
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runtime = SingleThreadedAgentRuntime(intervention_handler=ToolInterventionHandler())
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# Define the tools.
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tools: List[Tool] = [
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# A tool that executes Python code.
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PythonCodeExecutionTool(
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LocalCommandLineCodeExecutor(),
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)
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]
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# Register agents.
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tool_executor_agent = await runtime.register_and_get(
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"tool_executor_agent",
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lambda: ToolAgent(
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description="Tool Executor Agent",
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tools=tools,
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),
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)
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tool_use_agent = await runtime.register_and_get(
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"tool_enabled_agent",
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lambda: ToolUseAgent(
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description="Tool Use Agent",
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system_messages=[SystemMessage("You are a helpful AI Assistant. Use your tools to solve problems.")],
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model_client=get_chat_completion_client_from_envs(model="gpt-4o-mini"),
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tool_schema=[tool.schema for tool in tools],
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tool_agent=tool_executor_agent,
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),
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)
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run_context = runtime.start()
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# Send a task to the tool user.
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response = await runtime.send_message(
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Message("Run the following Python code: print('Hello, World!')"), tool_use_agent
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)
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print(response.content)
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# Run the runtime until the task is completed.
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await run_context.stop()
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if __name__ == "__main__":
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import logging
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logging.basicConfig(level=logging.WARNING)
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logging.getLogger("agnext").setLevel(logging.DEBUG)
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asyncio.run(main())
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