SearchApi

本页介绍了如何在 LangChain 中使用 SearchApi Google Search API。SearchApi 是一个实时 SERP API，用于轻松抓取 SERP。

设置

• 前往 https://www.searchapi.io/ 注册免费帐户
• 获取 api 密钥并将其设置为环境变量 （SEARCHAPI_API_KEY)

包装

效用

有一个 SearchApiAPIWrapper 实用程序用于包装此 API。要导入此实用程序，请执行以下作：

from langchain_community.utilities import SearchApiAPIWrapper

API 参考：SearchApiAPIWrapper

您可以将其用作 Self Ask 链的一部分：

from langchain_community.utilities import SearchApiAPIWrapper
from langchain_openai import OpenAI
from langchain.agents import initialize_agent, Tool
from langchain.agents import AgentType

import os

os.environ["SEARCHAPI_API_KEY"] = ""
os.environ['OPENAI_API_KEY'] = ""

llm = OpenAI(temperature=0)
search = SearchApiAPIWrapper()
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("Who lived longer: Plato, Socrates, or Aristotle?")

API 参考：SearchApiAPIWrapper | OpenAI | initialize_agent | 工具 | 代理类型

输出

> Entering new AgentExecutor chain...
 Yes.
Follow up: How old was Plato when he died?
Intermediate answer: eighty
Follow up: How old was Socrates when he died?
Intermediate answer: | Socrates | 
| -------- | 
| Born | c. 470 BC Deme Alopece, Athens | 
| Died | 399 BC (aged approximately 71) Athens | 
| Cause of death | Execution by forced suicide by poisoning | 
| Spouse(s) | Xanthippe, Myrto | 

Follow up: How old was Aristotle when he died?
Intermediate answer: 62 years
So the final answer is: Plato

> Finished chain.
'Plato'

工具

您还可以轻松地将此包装器作为工具加载（与 Agent 一起使用）。 您可以使用以下方法执行此作：

from langchain.agents import load_tools
tools = load_tools(["searchapi"])

API 参考：load_tools

有关工具的更多信息，请参阅此页面。