> ## Documentation Index
> Fetch the complete documentation index at: https://agno-v2-service-account.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Reliability Evaluation with Database Logging

> Demonstrates storing reliability evaluation results in PostgreSQL.

```python db_logging.py theme={null}
"""
Reliability Evaluation with Database Logging
============================================

Demonstrates storing reliability evaluation results in PostgreSQL.
"""

from typing import Optional

from agno.agent import Agent
from agno.db.postgres.postgres import PostgresDb
from agno.eval.reliability import ReliabilityEval, ReliabilityResult
from agno.models.openai import OpenAIChat
from agno.run.agent import RunOutput
from agno.tools.calculator import CalculatorTools

# ---------------------------------------------------------------------------
# Create Database
# ---------------------------------------------------------------------------
db_url = "postgresql+psycopg://ai:ai@localhost:5432/ai"
db = PostgresDb(db_url=db_url, eval_table="eval_runs")

# ---------------------------------------------------------------------------
# Create Agent
# ---------------------------------------------------------------------------
agent = Agent(
    model=OpenAIChat(id="gpt-5.2"),
    tools=[CalculatorTools()],
)

# ---------------------------------------------------------------------------
# Create Evaluation
# ---------------------------------------------------------------------------

# ---------------------------------------------------------------------------
# Run Evaluation
# ---------------------------------------------------------------------------
if __name__ == "__main__":
    response: RunOutput = agent.run("What is 10!?")
    evaluation = ReliabilityEval(
        db=db,
        name="Tool Call Reliability",
        agent_response=response,
        expected_tool_calls=["factorial"],
    )
    result: Optional[ReliabilityResult] = evaluation.run(print_results=True)
    if result:
        result.assert_passed()
```

## Run the Example

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

  <Step title="Install dependencies">
    ```bash theme={null}
    uv pip install -U agno openai psycopg-binary sqlalchemy
    ```
  </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>

  <Snippet file="run-pgvector-step.mdx" />

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

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

Full source: [cookbook/09\_evals/reliability/db\_logging.py](https://github.com/agno-agi/agno/blob/main/cookbook/09_evals/reliability/db_logging.py)