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1

Create a Python file

touch basic.py
2

Add the following code to your Python file

basic.py
from typing import Optional

from agno.agent import Agent
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


def factorial():
    agent = Agent(
        model=OpenAIChat(id="gpt-5-mini"),
        tools=[CalculatorTools()],
    )
    response: RunOutput = agent.run("What is 10!?")
    evaluation = ReliabilityEval(
        name="Tool Call Reliability",
        agent_response=response,
        expected_tool_calls=["factorial"],
    )
    result: Optional[ReliabilityResult] = evaluation.run(print_results=True)
    result.assert_passed()


if __name__ == "__main__":
    factorial()
3

Create a virtual environment

Open the Terminal and create a python virtual environment.
python3 -m venv .venv
source .venv/bin/activate
4

Install libraries

pip install -U openai agno
5

Export your OpenAI API key

  export OPENAI_API_KEY="your_openai_api_key_here"
6

Run Agent

python basic.py