View augmentation in multiscreen environment

The disclosed technology is generally directed to multiscreen environments. In one example of the technology, a registry is maintained. The registry includes a plurality of context schemas. Each context schema in the plurality of context schemas includes a context schema input and a context schema output. Context data is received from a first application. The context data includes at least one of a context schema input that is associated with view augmentation in a multiscreen environment or a context schema output that is associated with view augmentation in a multiscreen environment. It is determined whether the context data is valid based, at least in part, on the registry. In response to determining that the context data is valid, the context data is forwarded to at least a second application. The second application is separate from the first application.