A data tag descriptor method and system. The method includes generating by a device, a request for media data. The device generates a globally unique data tag specifying hardware and software capabilities of the device and a transmission package comprising the request and the globally unique data tag. The device transmits the transmission package to a service provider. The service provider determines based comparing the globally unique data tag to a media tag associated with metadata describing the media data if the media data is compatible with the capabilities of the device. The device receives executable media data from the service provider. The executable media data comprises a specified form of the media data. The executable media data is generated based on results of determining if the media data is compatible with the capabilities of said device. The device executes the executable media data for a user.