Steam api and how to create a game server automatically?

Question

linux

I will try to describe in more detail:
There is a server on debian 7, you need to run a server to play dota2 or\and cs:go.
It is desirable that it be created upon request, that is, a request with parameters comes to the server itself and the game server is already starting (well, I know how to do this if I know how to start the game server).
For example, I will describe how it works on the faceit.com service: 1 )
A queue of people is recruited
2) Next, a server is created in their system and after that the players can join this server.
played game.
Perhaps someone had experience or knows how to do this, share your experience.
In principle, I read a little that there is a certain utility from steam that creates this case.
And another question, do these games have api to get information during the game, for example, what is the current minute on the server?
Thank you all in advance.