> For the complete documentation index, see [llms.txt](https://docs.mapbox.com/help/ja/llms.txt)

# SKU tokens

Some SDKs send **SKU tokens** to track usage metered by sessions and users (for example, Mapbox GL JS and the Maps SDKs for iOS and Android). A SKU token is a sequence of letters and numbers appended as a query parameter to Mapbox API calls. In the example below, `1234abcd` is the SKU token:

```
https://api.mapbox.com/v4/mapbox.mapbox-terrain-v2,mapbox.mapbox-streets-v7/0/0/0.vector.pbf?sku=1234abcd&access_token=YOUR_ACCESS_TOKEN
```

See the [pricing page](https://www.mapbox.com/pricing/) for session and user pricing.

**Related resources:**

-   [Pricing by products](https://docs.mapbox.com/accounts/guides/pricing/)
-   [Statistics page](https://docs.mapbox.com/accounts/guides/statistics/)