# Advanced query usage
Note
Query examples in this content are shown unencoded to make them easier to read. Keep in mind that you might need to encode query strings if you're sending them as part of URLs, such as when you're executing them with the cURL tool.
Note
JavaScript SDK only.
In some cases, it may be convenient to attach a query or other URI parameter to every call you make to Usergrid, such as a custom identifier or token. To do this with the Usergrid JavaScript SDK, add a qs property to your Usergrid.Client object when you initialize the SDK. For more on initializing the SDK, see our install guide.