name (str): The name of the tool.
description (str): The description of the tool.
search_engine (str): The search engine to use. (duckduckgo etc)
search_engine_url (str): The URL of the search engine.
search_engine_key (str): The key of the search engine.
top_k (int): The number of results to return.
include_domains (list): The domains to include in the search.