agent.py

import json
import os
from smolagents import CodeAgent, DuckDuckGoSearchTool, VisitWebpageTool, tool, InferenceClientModel, Tool
from duckduckgo_search import DDGS
import requests
from bs4 import BeautifulSoup

#========Tools========#
@tool
def multiply(a: int, b: int) -> int:
    """Multiply two numbers.
    Args:
        a: first int
        b: second int
    """
    return a * b
@tool
def add(a: int, b: int) -> int:
    """Add two numbers.
    
    Args:
        a: first int
        b: second int
    """
    return a + b
@tool
def subtract(a: int, b: int) -> int:
    """Subtract two numbers.
    
    Args:
        a: first int
        b: second int
    """
    return a - b
@tool
def divide(a: int, b: int) -> int:
    """Divide two numbers.
    
    Args:
        a: first int
        b: second int
    """
    if b == 0:
        raise ValueError("Cannot divide by zero.")
    return a / b
@tool
def modulus(a: int, b: int) -> int:
    """Get the modulus of two numbers.
    
    Args:
        a: first int
        b: second int
    """
    return a % b

search_tool = DuckDuckGoSearchTool()
web_search = VisitWebpageTool()

def process_tool_output(tool_output):
    """Convert tool output to a string."""
    if isinstance(tool_output, list):
        return '\n'.join([item.get('title', str(item)) for item in tool_output if item]) or 'No results found'
    elif isinstance(tool_output, dict):
        return tool_output.get('title', str(tool_output))
    return str(tool_output)

@tool
def CustomDuckDuckGoSearchTool(query: str) -> str:
    """
    Perform a DuckDuckGo search and return a string result.

    Args:
        query: the question you input
    """
    try:
        with DDGS() as ddgs:
            results = list(ddgs.text(query, max_results=3))  # Convert generator to list
            return process_tool_output(results)
    except Exception as e:
            print(f"Error in DuckDuckGoSearchTool: {e}")
            return f"Search error: {e}"


@tool
def CustomVisitWebpageTool(query: str) -> str:
    """
    Visit a webpage and extract content as a string.

    Args:
        query: the question you input
    """
    try:
        response = requests.get(url, timeout=10)
        response.raise_for_status()
        soup = BeautifulSoup(response.text, 'html.parser')
        # Extract text from the webpage
        text = soup.get_text(separator=' ', strip=True)
        return text[:100]  # Limit output length to avoid overload
    except Exception as e:
        print(f"Error in VisitWebpageTool: {e}")
        return f"Webpage access error: {e}"


#=======Agent========#
hf_token = os.environ.get("HF_TOKEN")
model = InferenceClientModel(token = hf_token, model_id = 'meta-llama/Llama-2-7b-chat-hf', provider = "auto")
agent = CodeAgent(
    tools=[
    multiply,
    add,
    subtract,
    divide,
    modulus,
    search_tool,
    web_search,
   CustomDuckDuckGoSearchTool,
   CustomVisitWebpageTool],
    model = model,
    add_base_tools=True,
    planning_interval=3
)