ProvidersMoreGoogle SerperOn this pageGoogle SerperThis page covers how to use the Serper Google Search API within LangChain. Serper is a low-cost Google Search API that can be used to add answer box, knowledge graph, and organic results data from Google Search.
It is broken into two parts: setup, and then references to the specific Google Serper wrapper.Setup​Go to serper.dev to sign up for a free accountGet the api key and set it as an environment variable (SERPER_API_KEY)Wrappers​Utility​There exists a GoogleSerperAPIWrapper utility which wraps this API. To import this utility:from langchain.utilities import GoogleSerperAPIWrapperYou can use it as part of a Self Ask chain:from langchain.utilities import GoogleSerperAPIWrapperfrom langchain.llms.openai import OpenAIfrom langchain.agents import initialize_agent, Toolfrom langchain.agents import AgentTypeimport osos.environ["SERPER_API_KEY"] = ""os.environ['OPENAI_API_KEY'] = ""llm = OpenAI(temperature=0)search = GoogleSerperAPIWrapper()tools = [    Tool(        name="Intermediate Answer",        func=search.run,        description="useful for when you need to ask with search"    )]self_ask_with_search = initialize_agent(tools, llm, agent=AgentType.SELF_ASK_WITH_SEARCH, verbose=True)self_ask_with_search.run("What is the hometown of the reigning men's U.S. Open champion?")Output​Entering new AgentExecutor chain... Yes.Follow up: Who is the reigning men's U.S. Open champion?Intermediate answer: Current champions Carlos Alcaraz, 2022 men's singles champion.Follow up: Where is Carlos Alcaraz from?Intermediate answer: El Palmar, SpainSo the final answer is: El Palmar, Spain> Finished chain.'El Palmar, Spain'For a more detailed walkthrough of this wrapper, see this notebook.Tool​You can also easily load this wrapper as a Tool (to use with an Agent).
You can do this with:from langchain.agents import load_toolstools = load_tools(["google-serper"])For more information on tools, see this page.PreviousGoogle Document AINextGooseAISetupWrappersUtilityTool