Embodiments described include systems and methods for calling an application programming interface of a client application for a network application via an embedded browser of the client application. The method includes establishing, by a client application on a client device, one or more sessions to one or more network applications accessed via an embedded browser of the client application. The client application providing a plurality of application program interfaces (APIs). The client application can intercept a first API called by a network application of the one or more network applications and identify a policy for using the plurality of APIs of the client application. The client application can determine, based at least on the policy, a second API of the plurality of APIs to use for the intercepted first API, and execute, for the intercepted first API call, the second API of the plurality of APIs of the client application.