Vapor is a command-line utility that allows you to view and connect to Source game servers (Team Fortress 2, Counter-Strike: Source, etc.) as well as keep tabs on your Steam friends. Instead of launching Steam, followed by TF2, to see if it's worth joining your favorite server, you can just run vapor server list to see how many players are online and what the current map is. Then you can connect with vapor server connect [server alias].



First, ensure that you have Ruby 1.9.x installed. (Vapor was written on Ruby 1.9.3.) You also need to have RubyGems. With those prerequisites aside, installation should be a simple matter of:

gem install steam-vapor



  • vapor server add nickname — Save a server to Vapor's server list. The default port used is 27015, though you can specify another by inputting it after the IP/domain (with a space as a separator). The custom nickname is how Vapor keeps track of the server.
  • vapor server rm nickname — Remove the server corresponding to "nickname."
  • vapor server connect nickname — Launch Steam and connect to the server corresponding to "nickname."
  • vapor server list — View a listing of every server you have saved, complete with player counts and the current map.
  • vapor server info nickname — Display the same information as vapor server list, but with a listing of players and their scores.


  • vapor user mynameis you — (Replace "you" with your Steam username or numeric ID.) This tells Vapor who you are so the friends list will work.
  • vapor user friends — Displays a listing of your Steam friends, with their current status.
  • vapor user profile username — Displays a brief overview of the profile matching "username."

Note: For the most accurate command listing, use the vapor command's built-in help function.