# GA4

Automatic when gtag.js is on the page:

```js
gtag('set', 'user_properties', { da_class, da_agent, da_score, da_bucket, da_verified });
gtag('event', 'da_classified', { ...fields, non_interaction: true });
```

Admin › Custom definitions › Create custom dimension (User scope): `da_class`, then `da_agent`.

Server relabel: add your Measurement ID and API secret to your site settings. See [Relabel](/docs/relabel).