There are plenty of devices available, which are promoted with the phrase "compatible with alexa/google home", e.g. LightBulb or Smart socket
My question is:
Is it somehow possible to use and control these devices without using alexa or Google home? I'm specifically asking for WiFi devices like smart light bulbs or sockets. I would like to just connect them to my WiFi and then control them by sending some kind of HTTP-request to the devices, without using any alexa or google cloud whatsoever.
In my opinion if the devices are all compatible with these cloud-based services, they have to share some common API, which I should also be able to use offline just in my network, should'nt I? Unfortunately I did not find any information about such an API that I could use. Anyone has an idea?