What three tools are needed for the HistoryTravelBuddy™ agent, and what is the purpose of each?

The three tools are a web search tool, a URL fetching tool, and a Wikipedia search tool. The web search tool finds webpages about sights in the city; the URL tool retrieves the full content of a chosen webpage; the Wikipedia tool searches for historical articles and returns their titles, summaries, URLs, and full text.

HistoryTravelBuddy™ needs three tools because the agent itself cannot go online. First, it needs a web search tool to perform live searches based on the user's request, returning a set of webpages to visit. Second, it needs a URL fetching tool to retrieve the full content of any webpage the agent decides to inspect. Third, it needs a Wikipedia tool that uses the Wikipedia API to search for articles and fetch their content, returning the source URL, a summary, and the full text. With these three tools, the agent can search for sights, read the page contents, and enrich its itinerary with historical facts and links to Wikipedia articles.