Human-in-the-Loop

import json
import httpx
from agno.agent import Agent
from agno.db.sqlite import SqliteDb
from agno.models.openai import OpenAIResponses
from agno.os import AgentOS
from agno.os.interfaces.slack import Slack
from agno.tools import tool


@tool(requires_confirmation=True)
def get_top_hackernews_stories(num_stories: int) -> str:
    """Fetch top stories from Hacker News."""
    response = httpx.get("https://hacker-news.firebaseio.com/v0/topstories.json")
    story_ids = response.json()
    return json.dumps(story_ids[:num_stories])


db = SqliteDb(
    db_file="tmp/hitl_simple.db",
    session_table="agent_sessions",
)

agent = Agent(
    name="HN Agent",
    id="hn-agent",
    model=OpenAIResponses(id="gpt-5.4"),
    tools=[get_top_hackernews_stories],
    db=db,
)

agent_os = AgentOS(
    agents=[agent],
    db=db,
    interfaces=[Slack(agent=agent, reply_to_mentions_only=True)],
)
app = agent_os.get_app()

if __name__ == "__main__":
    agent_os.serve(app="hitl_simple:app", reload=True, port=7777)