三、使用LangGraph创建Agent 调用搜索工具

作者：CSDN博客
一、网络搜索工具Tavily

这里Agent使用的web搜索工具 Tavily，所有需要登录Tavily获取API key, 每个月会有1000次的免费试用；
1、直接使用tavily的python包

测试Tavily

1. pip install tavily-python

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测试代码：

1. from tavily import TavilyClient
3. tavily_client = TavilyClient(api_key="tvly-YOUR_API_KEY")
4. response = tavily_client.search("Who is Leo Messi?")
6. print(response)

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结果：

1. {
2.         'query': 'Who is Leo Messi?',
3.         'follow_up_questions': None,
4.         'answer': None,
5.         'images': [],
6.         'results': [{
7.                 'url': 'https://www.britannica.com/biography/Lionel-Messi',
8.                 'title': "Lionel Messi | Biography, Trophies, Records, Ballon d'Or ... - Britannica",
9.                 'content': "Jul 21, 2025·Lionel Messi (born June 24, 1987, Rosario, Argentina) is an Argentine-born football (soccer) player who received a record-setting eight Ballon d'Or awards.",
10.                 'score': 0.8116913,
11.                 'raw_content': None
12.         }, {
13.                 'url': 'https://en.wikipedia.org/wiki/Lionel_Messi',
14.                 'title': 'Lionel Messi - Wikipedia',
15.                 'content': "An Argentine international, Messi is the national team's all-time leading goalscorer and most-capped player. Several years after his senior debut in 2005, he\xa0...List of career achievements by...·Career·List of international goals...·Rosario",
16.                 'score': 0.79901963,
17.                 'raw_content': None
18.         }, {
19.                 'url': 'https://www.biography.com/athletes/lionel-messi',
20.                 'title': 'Lionel Messi: Biography, Soccer Player, Inter Miami CF, Athlete',
21.                 'content': 'Lionel Messi, a forward for Inter Miami CF, is one of the world’s greatest soccer players and helped the Argentina national team win its third FIFA World Cup in 2022. Messi, now playing for Inter Miami CF of the MLS, helped his home country win soccer’s biggest event for the first time since 1986, scoring two goals in the final and leading Argentina to a 4-2 win over Kylian Mbappé and France on penalties. Lionel Messi is an Argentinian soccer player who has played for FC Barcelona, Paris Saint-Germain, and currently, the MLS club Inter Miami CF as well as the Argentina national team.',
22.                 'score': 0.79901963,
23.                 'raw_content': None
24.         }, {
25.                 'url': 'https://www.forbes.com/profile/lionel-messi/',
26.                 'title': 'Lionel Messi - Forbes',
27.                 'content': "Messi claimed the Ballon d'Or as the world's best soccer player for a record eighth time in 2023, putting him three ahead of his rival Cristiano Ronaldo.",
28.                 'score': 0.59033114,
29.                 'raw_content': None
30.         }, {
31.                 'url': 'https://www.imdb.com/name/nm2177779/bio/',
32.                 'title': 'Lionel Messi - Biography - IMDb',
33.                 'content': 'After his senior debut in August 2005, Messi became the youngest Argentine to play and score in a [2006 FIFA World Cup Germany (2006)](https://www.imdb.com/title/tt0496190/?ref_=nmbio_mbio), and reached the final of the 2007 Copa América, where he was named young player of the tournament. In the 1/8 finals match of [2018 FIFA World Cup Russia (2018)](https://www.imdb.com/title/tt8412178/?ref_=nmbio_mbio) against the future winner of the tournament, [France National Football Team](https://www.imdb.com/name/nm8205573/?ref_=nmbio_mbio), Messi gave two assists, but the Argentines lost with a score of 3:4 and ended their participation in the tournament. *   Won the 2005 FIFA U20 World Cup with [Argentina National Under-20 Football Team](https://www.imdb.com/name/nm13956998/?ref_=nmbio_trv). [Favorite sports legends created 4 years ago•34 people ](https://www.imdb.com/list/ls082796372/?ref_=nmbio_urls_6) Lionel Messi ](https://www.imdb.com/poll/mcoBBSEui6g/?ref_=nmbio_urpl_2) Messi ![Image 15: Diego Maradona](https://m.media-amazon.com/images/M/MV5BN2Q4N

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原文地址：https://blog.csdn.net/Mrhiuser/article/details/151355321