LangChain

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from langchain_youdotcom import YouSearchTool
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tool = YouSearchTool()
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result = tool.invoke("latest developments in quantum computing")
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print(result)

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from langchain_youdotcom import YouSearchAPIWrapper, YouSearchTool
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tool = YouSearchTool(
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    api_wrapper=YouSearchAPIWrapper(
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        count=5,
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        livecrawl="web",       # "web", "news", or "all"
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        freshness="day",       # "day", "week", "month", or "year"
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        safesearch="moderate", # "off", "moderate", or "strict"
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    )
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)
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result = tool.invoke("AI news today")

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from langchain_youdotcom import YouContentsTool
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tool = YouContentsTool()
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result = tool.invoke({"urls": ["https://python.langchain.com"]})
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print(result[:500])

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from langchain_youdotcom import YouRetriever
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retriever = YouRetriever(count=5)
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docs = retriever.invoke("climate change policy updates")
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for doc in docs:
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    print(doc.metadata["url"])
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    print(doc.page_content[:300])
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    print()

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from langchain_youdotcom import YouRetriever
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from langchain_openai import ChatOpenAI
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from langchain_core.output_parsers import StrOutputParser
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from langchain_core.prompts import ChatPromptTemplate
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from langchain_core.runnables import RunnablePassthrough
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retriever = YouRetriever(count=5, livecrawl="web")
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llm = ChatOpenAI(model="gpt-4o-mini")
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prompt = ChatPromptTemplate.from_template(
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    """Answer based on the following context:
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{context}
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Question: {question}"""
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)
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def format_docs(docs):
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    return "\n\n".join(doc.page_content for doc in docs)
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chain = (
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    {"context": retriever | format_docs, "question": RunnablePassthrough()}
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    | prompt
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    | llm
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    | StrOutputParser()
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)
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for chunk in chain.stream("What is the current state of fusion energy research?"):
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    print(chunk, end="", flush=True)

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from langchain_openai import ChatOpenAI
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from langchain_youdotcom import YouSearchTool, YouContentsTool
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from langchain.agents import create_agent
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llm = ChatOpenAI(model="gpt-4o-mini")
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tools = [YouSearchTool(), YouContentsTool()]
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agent = create_agent(llm, tools)
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response = agent.invoke(
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    {"messages": [{"role": "user", "content": "What are the top AI news stories this week?"}]}
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)
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print(response["messages"][-1].content)

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from langchain_community.retrievers import YouRetriever
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from langchain_community.tools.you import YouSearchTool