browser-use-main/examples/features/custom_output.py

"""
Show how to use custom outputs.

@dev You need to add OPENAI_API_KEY to your environment variables.
"""

import asyncio
import os
import sys

sys.path.append(os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__)))))

from dotenv import load_dotenv

load_dotenv()

from pydantic import BaseModel

from browser_use import Agent, ChatOpenAI


class Post(BaseModel):
	post_title: str
	post_url: str
	num_comments: int
	hours_since_post: int


class Posts(BaseModel):
	posts: list[Post]


async def main():
	task = 'Go to hackernews show hn and give me the first  5 posts'
	model = ChatOpenAI(model='gpt-4.1-mini')
	agent = Agent(task=task, llm=model, output_model_schema=Posts)

	history = await agent.run()

	result = history.final_result()
	if result:
		parsed: Posts = Posts.model_validate_json(result)

		for post in parsed.posts:
			print('\n--------------------------------')
			print(f'Title:            {post.post_title}')
			print(f'URL:              {post.post_url}')
			print(f'Comments:         {post.num_comments}')
			print(f'Hours since post: {post.hours_since_post}')
	else:
		print('No result')


if __name__ == '__main__':
	asyncio.run(main())