> ## 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.

# Basic

> Serve a WhatsApp chat agent that replies in short conversational paragraphs with SQLite history.

```python basic.py theme={null}
"""
Basic
=====

Demonstrates basic.
"""

from agno.agent import Agent
from agno.db.sqlite import SqliteDb
from agno.models.openai import OpenAIChat
from agno.os.app import AgentOS
from agno.os.interfaces.whatsapp import Whatsapp

# ---------------------------------------------------------------------------
# Create Example
# ---------------------------------------------------------------------------

agent_db = SqliteDb(db_file="tmp/persistent_memory.db")
basic_agent = Agent(
    name="Basic Agent",
    model=OpenAIChat(id="gpt-4o"),
    db=agent_db,
    add_history_to_context=True,
    num_history_runs=3,
    add_datetime_to_context=True,
    markdown=True,
    instructions=[
        "You are chatting on WhatsApp. Keep responses conversational and natural.",
        "Structure your responses as separate short paragraphs separated by double newlines.",
        "Each paragraph should be a distinct thought or message, like a human would send on WhatsApp.",
        "Keep each paragraph to 1-3 sentences max.",
    ],
)


# Setup our AgentOS app
agent_os = AgentOS(
    agents=[basic_agent],
    interfaces=[Whatsapp(agent=basic_agent)],
)
app = agent_os.get_app()


# ---------------------------------------------------------------------------
# Run Example
# ---------------------------------------------------------------------------

if __name__ == "__main__":
    agent_os.serve(app="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]" openai
    ```
  </Step>

  <Step title="Export environment variables">
    <CodeGroup>
      ```bash Mac/Linux theme={null}
      export OPENAI_API_KEY="your_openai_api_key_here"
      export WHATSAPP_ACCESS_TOKEN="your_whatsapp_access_token_here"
      export WHATSAPP_APP_SECRET="your_whatsapp_app_secret_here"
      export WHATSAPP_PHONE_NUMBER_ID="your_whatsapp_phone_number_id_here"
      export WHATSAPP_VERIFY_TOKEN="your_whatsapp_verify_token_here"
      ```

      ```bash Windows theme={null}
      $Env:OPENAI_API_KEY="your_openai_api_key_here"
      $Env:WHATSAPP_ACCESS_TOKEN="your_whatsapp_access_token_here"
      $Env:WHATSAPP_APP_SECRET="your_whatsapp_app_secret_here"
      $Env:WHATSAPP_PHONE_NUMBER_ID="your_whatsapp_phone_number_id_here"
      $Env:WHATSAPP_VERIFY_TOKEN="your_whatsapp_verify_token_here"
      ```
    </CodeGroup>
  </Step>

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

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

Full source: [cookbook/05\_agent\_os/interfaces/whatsapp/basic.py](https://github.com/agno-agi/agno/blob/main/cookbook/05_agent_os/interfaces/whatsapp/basic.py)