> ## Documentation Index
> Fetch the complete documentation index at: https://docs.agno.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Approval Basic

> Approval-backed HITL: @approval + @tool(requires_confirmation=True) with persistent DB record.

```python approval_basic.py theme={null}
"""
Approval Basic
=============================

Approval-backed HITL: @approval + @tool(requires_confirmation=True) with persistent DB record.
"""

import json

import httpx
from agno.agent import Agent
from agno.approval import approval
from agno.db.sqlite import SqliteDb
from agno.models.openai import OpenAIResponses
from agno.os import AgentOS
from agno.tools import tool

DB_FILE = "tmp/approvals_test.db"


@approval(type="required")
@tool(requires_confirmation=True)
def get_top_hackernews_stories(num_stories: int) -> str:
    """Fetch top stories from Hacker News.

    Args:
        num_stories (int): Number of stories to retrieve.

    Returns:
        str: JSON string of story details.
    """
    response = httpx.get("https://hacker-news.firebaseio.com/v0/topstories.json")
    story_ids = response.json()
    stories = []
    for story_id in story_ids[:num_stories]:
        story = httpx.get(
            f"https://hacker-news.firebaseio.com/v0/item/{story_id}.json"
        ).json()
        story.pop("text", None)
        stories.append(story)
    return json.dumps(stories)


# ---------------------------------------------------------------------------
# Create Agent
# ---------------------------------------------------------------------------
db = SqliteDb(
    db_file=DB_FILE, session_table="agent_sessions", approvals_table="approvals"
)
agent = Agent(
    name="Approval Basic Agent",
    model=OpenAIResponses(id="gpt-5-mini"),
    tools=[get_top_hackernews_stories],
    markdown=True,
    db=db,
)


agent_os = AgentOS(
    description="Example app for approvals with basic tool",
    agents=[
        agent,
    ],
    db=db,
)
app = agent_os.get_app()

if __name__ == "__main__":
    agent_os.serve(app="approval_basic:app", reload=True)
```

## Run the Example

<Steps>
  <Snippet file="create-venv-step.mdx" />

  <Step title="Install dependencies">
    ```bash theme={null}
    uv pip install -U "agno[os]" fastmcp openai starlette
    ```
  </Step>

  <Step title="Export your API keys">
    <CodeGroup>
      ```bash Mac/Linux theme={null}
      export JWT_VERIFICATION_KEY="your_jwt_verification_key_here"
      export OPENAI_API_KEY="your_openai_api_key_here"
      ```

      ```bash Windows theme={null}
      $Env:JWT_VERIFICATION_KEY="your_jwt_verification_key_here"
      $Env:OPENAI_API_KEY="your_openai_api_key_here"
      ```
    </CodeGroup>
  </Step>

  <Step title="Run the example">
    Save the code above as `approval_basic.py`, then run:

    ```bash theme={null}
    python approval_basic.py
    ```
  </Step>
</Steps>

Full source: [cookbook/05\_agent\_os/approvals/agent/approval\_basic.py](https://github.com/agno-agi/agno/blob/main/cookbook/05_agent_os/approvals/agent/approval_basic.py)