# Configuration

The Fortmatic SDK offers an endpoint for customizing certain UI behavior.

```javascript
import Fortmatic from 'fortmatic';

const fm = new Fortmatic('YOUR_API_KEY');
fm.configure({ ... });
```

As of `v1.0.1`, the only endpoint that makes use of configuration is [`Fortmatic.user.login`](https://docs.fortmatic.com/v1.x/fortmatic-native/log-in).