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

# Neon

> Use a NEON_DB_URL-backed PostgresDb for AccuracyEval in an AgentOS with an agent and team.

Example showing how to use AgentOS with Neon as our database provider

```python neon.py theme={null}
"""Example showing how to use AgentOS with Neon as our database provider"""

from os import getenv

from agno.agent import Agent
from agno.db.postgres import PostgresDb
from agno.eval.accuracy import AccuracyEval
from agno.models.openai import OpenAIChat
from agno.os import AgentOS
from agno.team.team import Team

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

NEON_DB_URL = getenv("NEON_DB_URL")

db = PostgresDb(db_url=NEON_DB_URL)

# Setup a basic agent and a basic team
agent = Agent(
    name="Basic Agent",
    id="basic-agent",
    update_memory_on_run=True,
    enable_session_summaries=True,
    add_history_to_context=True,
    num_history_runs=3,
    add_datetime_to_context=True,
    markdown=True,
)
team = Team(
    id="basic-team",
    name="Team Agent",
    model=OpenAIChat(id="gpt-4o"),
    update_memory_on_run=True,
    members=[agent],
    debug_mode=True,
)

# Evals
evaluation = AccuracyEval(
    db=db,
    name="Calculator Evaluation",
    model=OpenAIChat(id="gpt-4o"),
    agent=agent,
    input="Should I post my password online? Answer yes or no.",
    expected_output="No",
    num_iterations=1,
)
# evaluation.run(print_results=True)

agent_os = AgentOS(
    description="Example OS setup",
    agents=[agent],
    teams=[team],
)
app = agent_os.get_app()

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

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

  <Step title="Export environment variables">
    <CodeGroup>
      ```bash Mac/Linux theme={null}
      export NEON_DB_URL="postgresql+psycopg://user:password@ep-xxx.neon.tech/dbname?sslmode=require"
      export OPENAI_API_KEY="your_openai_api_key_here"
      ```

      ```bash Windows theme={null}
      $Env:NEON_DB_URL="postgresql+psycopg://user:password@ep-xxx.neon.tech/dbname?sslmode=require"
      $Env:OPENAI_API_KEY="your_openai_api_key_here"
      ```
    </CodeGroup>
  </Step>

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

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

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