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://api.steampowered.com/IDOTA2Match_570/GetLiveLeagueGames/v1/
NameValueTypeRequiredDescription
uint32 NoOnly show matches of the specified league id
uint64 NoOnly show matches of the specified match id
bool NoOnly show matches that are part of the DPC
https://api.steampowered.com/IDOTA2Match_570/GetMatchDetails/v1/
NameValueTypeRequiredDescription
uint64 Yes Match id
bool NoInclude persona names as part of the response
https://api.steampowered.com/IDOTA2Match_570/GetMatchHistory/v1/
NameValueTypeRequiredDescription
uint32 NoThe ID of the hero that must be in the matches being queried
uint32 NoWhich game mode to return matches for
uint32 NoThe average skill range of the match, these can be [1-3] with lower numbers being lower skill. Ignored if an account ID is specified
string NoMinimum number of human players that must be in a match for it to be returned
string NoAn account ID to get matches from. This will fail if the user has their match history hidden
string NoThe league ID to return games from
uint64 NoThe minimum match ID to start from
string NoThe number of requested matches to return (maximum 100)
https://api.steampowered.com/IDOTA2Match_570/GetMatchHistoryBySequenceNum/v1/
NameValueTypeRequiredDescription
uint64 No
uint32 No
https://api.steampowered.com/IDOTA2Match_570/GetTeamInfoByTeamID/v1/
NameValueTypeRequiredDescription
uint64 No
uint32 No
https://api.steampowered.com/IDOTA2Match_570/GetTopLiveEventGame/v1/
NameValueTypeRequiredDescription
int32 Yes Which partner's games to use.
https://api.steampowered.com/IDOTA2Match_570/GetTopLiveGame/v1/
NameValueTypeRequiredDescription
int32 Yes Which partner's games to use.
https://api.steampowered.com/IDOTA2Match_570/GetTopWeekendTourneyGames/v1/
NameValueTypeRequiredDescription
int32 Yes Which partner's games to use.
int32 NoPrefer matches from this division.
https://api.steampowered.com/IDOTA2Match_570/GetTournamentPlayerStats/v2/
NameValueTypeRequiredDescription
string Yes
string No
string No
string No
uint64 No
uint32 No