tools/web_search.py

from typing import Any, Optional
from smolagents.tools import Tool
import duckduckgo_search

class DuckDuckGoSearchTool(Tool):
    name = "web_search"
    description = "Performs a duckduckgo web search based on your query (think a Google search) then returns the top search results."
    inputs = {
        'query': {
            'type': 'string',
            'description': 'The search query to perform.'
        }
    }
    output_type = "string"

    def __init__(self, max_results=10, **kwargs):
        super().__init__()
        self.max_results = max_results
        try:
            from duckduckgo_search import DDGS
        except ImportError as e:
            raise ImportError(
                "You must install package `duckduckgo_search` to run this tool: for instance run `pip install duckduckgo-search`."
            ) from e
        self.ddgs = DDGS(**kwargs)

    def forward(self, query: str) -> str:
        results = list(self.ddgs.text(query, max_results=self.max_results))
        if len(results) == 0:
            raise Exception("No results found! Try a less restrictive/shorter query.")
        
        # Print result structure for debugging
        if results:
            print("Result keys:", results[0].keys())
        
        postprocessed_results = []
        for result in results:
            title = result.get('title', '')
            url = result.get('link', '') or result.get('href', '')
            body = result.get('body', '') or result.get('snippet', '')
            postprocessed_results.append(f"[{title}]({url})\n{body}")
        
        return "## Search Results\n\n" + "\n\n".join(postprocessed_results)