Agente de investigación con Pydantic AI

from pydantic_ai import Agent, RunContext

agent = Agent(
    "openai:gpt-4o",
    system_prompt="You are a research assistant. Search the web to gather information, then synthesize findings into a structured report with citations.",
)

@agent.tool
async def web_search(ctx: RunContext, query: str, max_results: int = 3) -> str:
    """Search the web for current information."""
    from tavily import TavilyClient
    client = TavilyClient()
    results = client.search(query, max_results=max_results)
    return "\n\n".join(
        f"**{r['title']}**\n{r['content']}" for r in results["results"]
    )

result = await agent.run("Compare the latest developments in AI agent frameworks in 2025")
print(result.output)