Used to access information and interact with users.

See IPlayerService for additional methods.

For more info on how to use the Steamworks Web API please see the Web API Overview.

CheckAppOwnership

Name	Type	Required	Description
key	string	✔	Steamworks Web API publisher authentication key.
steamid	uint64	✔	SteamID of user
appid	uint32	✔	AppID to check for ownership

Checks if the specified user owns the app.

The JSON response will contain the following fields:

Name	Type	Description
ownsapp	bool	Indicates if the user is the actual owner or the app.
permanent	bool	Whether the user permanetly owns your app. Not true for ownership via Family Sharing, free weekends, or site license
timestamp	string	Time that the app was acquired.
ownersteamid	uint64	Indicates the true owner of the app.
sitelicense	bool	Indicates if user is borrowing this license from a PC Cafe site.

This method has previous versions which are no longer officially supported. They will continue to be usable but it's highly recommended that you use the latest version.
Change history:

• Version 2 - Adds element sitelicense to the response.

NOTE: This call requires the publisher API key that owns the specified App ID to use this method. As such this API MUST be called from a secure server, and can never be used directly by clients!

GetAppPriceInfo

Name	Type	Required	Description
key	string	✔	Steamworks Web API publisher authentication key.
steamid	uint64	✔	SteamID of user
appids	string	✔	Comma-delimited list of appids (max: 100)

NOTE: This call requires a publisher API key to use this method. As such this API MUST be called from a secure server, and can never be used directly by clients!

GetDeletedSteamIDs

Name	Type	Required	Description
key	string	✔	Steamworks Web API publisher authentication key.
rowversion	uint64	✔	An unsigned 64-bit value used to page through deleted accounts. Pass 0 when calling this API for the first time, then pass the value returned from the previous call for each additional request. This value will need to be stored on your server for future calls.

You can use GetDeletedSteamIDs to retrieve a list of deleted accounts that owned your game(s) before deletion. This API was created to allow for the deletion of user related data for GDPR and other personal information related purposes.

The provided Steamworks Publisher Key is used for both authentication and to generate the list of appids to check against.

GetFriendList

Name	Type	Required	Description
key	string	✔	Steamworks Web API user authentication key.
steamid	uint64	✔	SteamID of user
relationship	string		relationship type (ex: friend)

GetPlayerBans

Name	Type	Required	Description
key	string	✔	Steamworks Web API user authentication key.
steamids	string	✔	Comma-delimited list of SteamIDs

GetPlayerSummaries

Name	Type	Required	Description
key	string	✔	Steamworks Web API user authentication key.
steamids	string	✔	Comma-delimited list of SteamIDs (max: 100)

This method has previous versions which are no longer officially supported. They will continue to be usable but it's highly recommended that you use the latest version.
Change history:

• Version 2 - Removes element names from arrays

The response from the call will look something like this:

GetPublisherAppOwnership

Name	Type	Required	Description
key	string	✔	Steamworks Web API publisher authentication key.
steamid	uint64	✔	SteamID of user

This method has previous versions which are no longer officially supported. They will continue to be usable but it's highly recommended that you use the latest version.
Change history:

• Version 3 - Adds element sitelicense to the response

The response from the call will look something like this:


The JSON response will contain the following fields:

Name	Type	Description
appid	uint32	AppID associated with your WebAPI key
ownsapp	bool	Whether the user currently owns your app. Will be true for ownership via purchases, CD-keys, Family Sharing, free weekends, and site license
permanent	bool	Whether the user permanetly owns your app. Not true for ownership via Family Sharing, free weekends, or site license
timestamp	string	GMT time for when the user first accquired the appID
ownersteamid	uint64	SteamID for the actual owner. If the app is owned via Family Sharing, ownersteamid will be the actual owner. Otherwise will be the same steamID passed in
sitelicense	bool	Indicates if user is borrowing this license from a commercial site

NOTE: This call requires a publisher API key to use this method. As such this API MUST be called from a secure server, and can never be used directly by clients!

GetPublisherAppOwnershipChanges

Name	Type	Required	Description
key	string	✔	Steamworks Web API publisher authentication key.
packagerowversion	string	✔	The unsigned 64-bit row version to read package changes from. The row version of data read up to will be returned for use in future calls.
cdkeyrowversion	string	✔	The unsigned 64-bit row version to read CD Key changes from. The row version of data read up to will be returned for use in future calls.

This method can be used to determine what SteamIDs have ownership changes starting from a particular package or key row version number. From the list of SteamIDs returned, a call to GetPublisherAppOwnership can then return the associated ownership data for the applications in the group associated with the key passed in. A partner may wish to track this data in conjunction with linked Steam Accounts to better understand the state of product ownership on Steam.

To begin, make a call to GetPublisherAppOwnershipChanges passing in packagerowversion and cdkeyrowversion with the values of 0 (zero). The response from the call will look something like this:


The JSON response will contain the following fields:

Name	Type	Description
steamids/steamid	string	The list of SteamIDs for any accounts that have changed since the provided row versions. Up to 10,000 SteamIDs will be returned per call.
packagerowversion	string	The package row version that matches the last SteamID returned. Store this for future calls to GetPublisherAppOwnershipChanges
cdkeyrowversion	string	The cd key row version that matches the last SteamID returned. Store this for future calls to GetPublisherAppOwnershipChanges
moredata	bool	Indicates if more and newer data is available.

After this first call returns:

1. Make a call to GetPublisherAppOwnership for each SteamID to get the actual ownership per AppID. Store or use that data as needed.
   
2. Once all the SteamIDs have been processed, check the value of moredata. If it is true, make a new call to GetPublisherAppOwnershipChanges passing in the packagerowversion and cdkeyrowversion as returned from the previous call to GetPublisherAppOwnershipChanges.
   
3. Repeat Step 1 and 2 until moredata returns false.
   
4. Store the final packagerowversion and cdkeyrowversion values for use in future GetPublisherAppOwnershipChanges calls (e.g. 24 hours later) instead of starting at 0 (zero) again.

NOTE: This call requires a publisher API key to use this method. As such this API MUST be called from a secure server, and can never be used directly by clients!

GetUserGroupList

Name	Type	Required	Description
key	string	✔	Steamworks Web API publisher authentication key.
steamid	uint64	✔	SteamID of user

ResolveVanityURL

Name	Type	Required	Description
key	string	✔	Steamworks Web API user authentication key.
vanityurl	string	✔	The vanity URL to get a SteamID for
url_type	int32		The type of vanity URL. 1 (default): Individual profile, 2: Group, 3: Official game group