Steam browser protocol

There are several commands available that interact with steam. All of them open up steam if it is not open. They can either be typed into a command box (start-> run menu) or through your browser's addressbar.

• steam:%c This opens Steam with command line arguments. Replace %c with command line arguments found here: Command Line Options

• steam://store/%id This opens up the store for the specified product, if no product is specified then the default one is opened. Replace %id with a product number from this page Applaunch IDs.

   * steam://backup/%id' This opens up Steam's backup utility. If a product id is specified then the product is checkmarked automatically. Replace %id with a product number from this page Applaunch IDs. 

   * steam://run/%id' This opens a product. Replace %id with a product number from this page Applaunch IDs. 

   * steam://updatenews/%id This opens the news about the latest updates for the specified product. Replace %id with a product number from this page Applaunch IDs. 

   * steam://install/%id This installs a product. Replace %id with a product number from this page Applaunch IDs. 

   * steam://preload/%id This preloads a product. Replace %id with a product number from this page Applaunch IDs. 

   * steam://purchase/subscription/%i This opens up a dialog box to buy a subscription to a Steam product/service. None are available as of writing. 

   * steam://purchase/%id This opens a dialog box to buy a product from Steam. Since Counter-Strike: Condition Zero and the Valve Premier Pack can no longer be purchased by themselves, because they have been replace with Half-Life 2, this is useful. Replace %i with: 7 for Counter-Strike: Condition Zero, 8 for Valve Premier Pack, 9 for Half-Life 2 Bronze, 10 for Half-life 2 Silver, or 13 for Half-Life 2 Gold. 

   * steam://validate/%id This Validates the files within gcf's of the Applaunch ID you choose.