Assignment 2: Create an Agent

In our first lesson we built an Agent that returned one search result.

Your task is to create an agent that: uses the content from the top-3 ranking sites to answer the user’s question.

Optionally: the agent refines the user’s query before calling internet_search(query).

Start by:

Setup an account at OpenRouter.ai
Set the OPENROUTER_API_KEY
Select an LLM a free model like: "nvidia/nemotron-3-nano-30b-a3b:free" (unless you’re okay with paying $5.00)

Then, use the create_agent() function with the right parameters:

model: must be an agent that can use tools.
tools: internet_search and fetch_url.
system_prompt: where you give the agent role and instructions to accomplish the task successfully.

Tip: break-down the problem into smaller problems, and solve it one by one.

Hint: you can use this as a tool to fetch the content as a piece of text from any website on the specified URL:

import requests
from langchain.tools import tool

@tool
def fetch_url(url: str) -> str:
    """Fetch text content from a URL"""
    response = requests.get(url, timeout=10.0)
    response.raise_for_status()
    return response.text