from langchain_linkup import LinkupSearchRetrieverretriever = LinkupSearchRetriever( depth="deep", # "standard" or "deep" linkup_api_key=None, # API key can be passed here or set as the LINKUP_API_KEY environment variable)
from langchain_linkup import LinkupSearchTooltool = LinkupSearchTool( depth="deep", # "standard" or "deep" output_type="searchResults", # "searchResults", "sourcedAnswer" or "structured" linkup_api_key=None, # API key can be passed here or set as the LINKUP_API_KEY environment variable)