> ## 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.

# Accuracy with Database Logging

> Example showing how to store evaluation results in the database for tracking and analysis.

<Steps>
  <Step title="Create a Python file">
    ```python accuracy_db_logging.py theme={null}
    """Example showing how to store evaluation results in the database."""

    from typing import Optional

    from agno.agent import Agent
    from agno.db.postgres.postgres import PostgresDb
    from agno.eval.accuracy import AccuracyEval, AccuracyResult
    from agno.models.openai import OpenAIResponses
    from agno.tools.calculator import CalculatorTools

    # Setup the database
    db_url = "postgresql+psycopg://ai:ai@localhost:5432/ai"
    db = PostgresDb(db_url=db_url, eval_table="eval_runs_cookbook")


    evaluation = AccuracyEval(
        db=db,  # Pass the database to the evaluation. Results will be stored in the database.
        name="Calculator Evaluation",
        model=OpenAIResponses(id="gpt-5.2"),
        agent=Agent(
            model=OpenAIResponses(id="gpt-5.2"),
            tools=[CalculatorTools()],
        ),
        input="What is 10*5 then to the power of 2? do it step by step",
        expected_output="2500",
        additional_guidelines="Agent output should include the steps and the final answer.",
        num_iterations=1,
    )

    result: Optional[AccuracyResult] = evaluation.run(print_results=True)
    assert result is not None and result.avg_score >= 8
    ```
  </Step>

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

  <Step title="Install dependencies">
    ```bash theme={null}
    uv pip install -U openai agno psycopg
    ```
  </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 Agent">
    ```bash theme={null}
    python accuracy_db_logging.py
    ```
  </Step>
</Steps>