# Basic Slack Agent (/agent-os/usage/interfaces/slack/basic)



Part of the [Slack interface](/agent-os/interfaces/slack/introduction) examples. Follow the [setup guide](/agent-os/interfaces/slack/setup).

## Code [#code]

```python title="basic.py"
from agno.agent import Agent
from agno.db.sqlite.sqlite import SqliteDb
from agno.models.openai import OpenAIChat
from agno.os.app import AgentOS
from agno.os.interfaces.slack import Slack

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

basic_agent = Agent(
    name="Basic Agent",
    model=OpenAIChat(id="gpt-5.4-mini"),
    db=agent_db,
    add_history_to_context=True,
    num_history_runs=3,
    add_datetime_to_context=True,
)

# Setup our AgentOS app
agent_os = AgentOS(
    agents=[basic_agent],
    interfaces=[
        Slack(
            agent=basic_agent,
            reply_to_mentions_only=True,  # The Agent will react only to messages mentioning it
        )
    ],
)
app = agent_os.get_app()


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

## Usage [#usage]

<Steps>
    <Step title="Set up your virtual environment">
      <CodeBlockTabs defaultValue="Mac">
        <CodeBlockTabsList>
          <CodeBlockTabsTrigger value="Mac">
            Mac
          </CodeBlockTabsTrigger>

          <CodeBlockTabsTrigger value="Windows">
            Windows
          </CodeBlockTabsTrigger>
        </CodeBlockTabsList>

        <CodeBlockTab value="Mac">
          ```bash
          uv venv --python 3.12
          source .venv/bin/activate
          ```
        </CodeBlockTab>

        <CodeBlockTab value="Windows">
          ```bash
          uv venv --python 3.12
          .venv\Scripts\activate
          ```
        </CodeBlockTab>
      </CodeBlockTabs>
    </Step>

  <Step title="Set Environment Variables">
    ```bash
    export SLACK_TOKEN=***
    export SLACK_SIGNING_SECRET=***
    export OPENAI_API_KEY=***
    ```
  </Step>

  <Step title="Install Dependencies">
    ```bash
    uv pip install -U "agno[os,slack]" openai
    ```
  </Step>

  <Step title="Run Example">
    ```bash
    python basic.py
    ```
  </Step>
</Steps>

## Key Features [#key-features]

* **Mention-Only Replies**: Responds only to @mentions in channels
* **Session Persistence**: SQLite database stores conversation history across restarts
* **Conversation History**: Last 3 interactions included in context