This page is just a reference of all the known Steam APIs, I do not know how they work. Please do not email me with questions.
https://partner.steam-api.com/ISteamLeaderboards/DeleteLeaderboard/v1/
NameValueTypeRequiredDescription
uint32 Yes appid of game
string Yes name of the leaderboard to delete
https://partner.steam-api.com/ISteamLeaderboards/DeleteLeaderboardScore/v1/
NameValueTypeRequiredDescription
uint32 Yes appid of game
uint64 Yes numeric ID of the target leaderboard. Can be retrieved from GetLeaderboardsForGame
uint64 Yes steamID to set the score for
https://partner.steam-api.com/ISteamLeaderboards/FindOrCreateLeaderboard/v2/
NameValueTypeRequiredDescription
uint32 Yes appid of game
string Yes name of the leaderboard to create
string Nosort method to use for this leaderboard (defaults to Ascending)
string Nodisplay type for this leaderboard (defaults to Numeric)
bool Noif this is true the leaderboard will be created if it doesn't exist. Defaults to true.
bool Noif this is true the leaderboard scores cannot be set by clients, and can only be set by publisher via SetLeaderboardScore WebAPI. Defaults to false.
bool Noif this is true the leaderboard scores can only be read for friends by clients, scores can always be read by publisher. Defaults to false.
bool Noif this is true the leaderboard scores for SteamIDs can only be read for party members, scores can always be read by publisher. Defaults to false.
int32 Nolimit the range of rows around user. Zero means unlimited. -1 means disabled. Positive is plus/minus limit. Defaults to zero.
int32 Nolimit the top of the leaderboard. Zero means unlimited. -1 means disabled. Positive is limit to TOP(N). Defaults to zero.
https://partner.steam-api.com/ISteamLeaderboards/GetLeaderboardEntries/v1/
NameValueTypeRequiredDescription
click to setstring Yes access key
uint32 Yes appid of game
int32 Yes range start or 0
int32 Yes range end or max LB entries
uint64 NoSteamID used for friend & around user requests
int32 Yes ID of the leaderboard to view
uint32 Yes type of request: RequestGlobal, RequestAroundUser, RequestFriends
https://partner.steam-api.com/ISteamLeaderboards/GetLeaderboardsForGame/v2/
NameValueTypeRequiredDescription
click to setstring Yes access key
uint32 Yes appid of game
https://partner.steam-api.com/ISteamLeaderboards/ModifyLeaderboardScoreMulti/v1/
NameValueTypeRequiredDescription
uint32 Yes appid of game
uint64 Yes steamID to set the score for
int32 Nothe score to set for this user
string Noupdate method to use. Can be "KeepBest" or "ForceUpdate"
rawbinary Nogame-specific details for how the score was earned. Up to 256 bytes.
uint32[] NoNumeric ID of the target leaderboard to delete user scores from. Multiple leaderboards supported by numbering sequentially [0], [1], [2], ... Leaderboards be retrieved from GetLeaderboardsForGame.
uint32 NoNumeric ID of the target leaderboard to delete user scores from. Multiple leaderboards supported by numbering sequentially [0], [1], [2], ... Leaderboards be retrieved from GetLeaderboardsForGame.
uint32[] NoNumeric ID of the target leaderboard to set user scores into. Multiple leaderboards supported by numbering sequentially [0], [1], [2], ... Scores are set after all delete operations complete. Leaderboards be retrieved from GetLeaderboardsForGame.
uint32 NoNumeric ID of the target leaderboard to set user scores into. Multiple leaderboards supported by numbering sequentially [0], [1], [2], ... Scores are set after all delete operations complete. Leaderboards be retrieved from GetLeaderboardsForGame.
https://partner.steam-api.com/ISteamLeaderboards/ResetLeaderboard/v1/
NameValueTypeRequiredDescription
uint32 Yes appid of game
uint32 Yes numeric ID of the target leaderboard. Can be retrieved from GetLeaderboardsForGame
https://partner.steam-api.com/ISteamLeaderboards/SetLeaderboardScore/v1/
NameValueTypeRequiredDescription
uint32 Yes appid of game
uint32 Yes numeric ID of the target leaderboard. Can be retrieved from GetLeaderboardsForGame
uint64 Yes steamID to set the score for
int32 Yes the score to set for this user
string Yes update method to use. Can be "KeepBest" or "ForceUpdate"
rawbinary Nogame-specific details for how the score was earned. Up to 256 bytes.