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

# Using config

## Overview

Core APIs consume typed config objects.
At the edge, load raw config data (for example from YAML) and map it to `LLMConfig`.

## Example

```php theme={null}
<?php
require 'examples/boot.php';

use Cognesy\Instructor\StructuredOutput;

class User {
    public int $age;
    public string $name;
}

$structuredOutput = StructuredOutput::using('openai');

$user = $structuredOutput->with(
    messages: 'Our user Jason is 25 years old.',
    responseModel: User::class,
)->get();

dump($user);
assert(isset($user->name));
assert(isset($user->age));
?>
```