> ## 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.

# Hello AgentOS

> Serve a minimal AgentOS with one Postgres-backed agent, team, and workflow.

Serve one persistent agent as a FastAPI application. After the server starts, open [http://localhost:7777/config](http://localhost:7777/config) to inspect the API surface, then connect the server to the AgentOS control plane at [https://os.agno.com](https://os.agno.com).

```python basic.py theme={null}
"""
Hello AgentOS
=============

Serve one persistent agent as a FastAPI application. After the server starts,
open http://localhost:7777/config to inspect the API surface, then connect the
server to the AgentOS control plane at https://os.agno.com.

Prerequisites: OPENAI_API_KEY and internet access to https://docs.agno.com/mcp
Run: .venvs/demo/bin/python cookbook/05_agent_os/basic.py
Try: Open http://localhost:7777/config, then ask "How do I create an AgentOS?"
"""

from agno.agent import Agent
from agno.db.sqlite import SqliteDb
from agno.models.openai import OpenAIResponses
from agno.os import AgentOS
from agno.tools.mcp import MCPTools

# ---------------------------------------------------------------------------
# Create Database
# ---------------------------------------------------------------------------

db = SqliteDb(
    id="hello-agent-os-db",
    db_file="tmp/agent_os.db",
)

# ---------------------------------------------------------------------------
# Create Agent
# ---------------------------------------------------------------------------

agno_assist = Agent(
    id="agno-assist",
    name="Agno Assist",
    model=OpenAIResponses(id="gpt-5.5"),
    db=db,
    tools=[MCPTools(url="https://docs.agno.com/mcp")],
    instructions="Answer questions about Agno using the documentation tools.",
    add_datetime_to_context=True,
    add_history_to_context=True,
    num_history_runs=3,
    markdown=True,
)

# ---------------------------------------------------------------------------
# Create AgentOS
# ---------------------------------------------------------------------------

agent_os = AgentOS(
    id="hello-agent-os",
    description="A minimal AgentOS with one persistent agent.",
    agents=[agno_assist],
)
app = agent_os.get_app()

# ---------------------------------------------------------------------------
# Run AgentOS
# ---------------------------------------------------------------------------

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[mcp,os]" openai
    ```
  </Step>

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

      ```bash Windows theme={null}
      $Env:OPENAI_API_KEY="your_openai_api_key_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/basic.py](https://github.com/agno-agi/agno/blob/v3.0.4/cookbook/05_agent_os/basic.py)