> For the complete documentation index, see [llms.txt](https://docs.parallels.com/landing/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.parallels.com/landing/ras-admin-guide/parallels-ras-21-administrators-guide/parallels-ras-apis/ras-web-client-api-and-parallels-client-url-scheme.md).

# RAS Web Client API and Parallels Client URL scheme

RAS Web Client API and Parallels Client URL scheme allow you to integrate with Parallels clients.

Using the RAS Web Client API or the URL scheme, you can implement an in-house solution, such as an application hub or web portal, for authenticating users and launching remote applications, desktops, and other published resources. Such an implementation is possible by integrating a custom solution with Parallels Clients, including Parallels Clients for supported platforms (Windows, macOS, Linux, iOS, Android) and RAS Web Client.

The following is a quick summary of the API and the URL scheme:

* **RAS Web Client API** — provides connection, user authentication, and resource launching methods called from a web browser via Web Client.
* **Parallels Client URL scheme** — a custom URL scheme that allows you to perform actions in a Parallels Client installed on a user device. Actions include configuring a connection, authenticating a user, and launching published resources.

RAS Web Client API and Parallels Client URL scheme are described in detail in the **Integrating with Parallels Clients** guide, which is available for download on the Parallels website at the following location: <https://www.parallels.com/products/ras/resources/>.


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