額外的 Steam 經濟體方法，用於提供 Steam 交易的存取權。

NOTE: 此為服務介面，此介面的方法應使用 input_json 參數來呼叫。

Steamworks Web API 的詳細使用方法請見 Web API 總覽。

GetTradeHistory

名稱	Type	必要	說明
key	string	✔	Steamworks Web API 發行商驗證金鑰。
max_trades	uint32	✔	The number of trades to return information for
start_after_time	uint32	✔	The time of the last trade shown on the previous page of results, or the time of the first trade if navigating back
start_after_tradeid	uint64	✔	The tradeid shown on the previous page of results, or the ID of the first trade if navigating back
navigating_back	bool	✔	The user wants the previous page of results, so return the previous max_trades trades before the start time and ID
get_descriptions	bool	✔	If set, the item display data for the items included in the returned trades will also be returned
language	string	✔	The language to use when loading item display data
include_failed	bool	✔
include_total	bool	✔	If set, the total number of trades the account has participated in will be included in the response

Gets a history of trades

FlushInventoryCache

名稱	Type	必要	說明
key	string	✔	Steamworks Web API 發行商驗證金鑰
steamid	uint64	✔	User to clear cache for.
appid	uint32	✔	App to clear cache for.
contextid	uint64	✔	Context to clear cache for.

Flushes the cache for a user's inventory in a specific app context

NOTE: 此呼叫方法需要發行商 API 金鑰才能使用。 因此這個 API 必須從安全的伺服器呼叫，同時用戶端也絕對不能直接使用此 API！

FlushAssetAppearanceCache

名稱	Type	必要	說明
key	string	✔	Steamworks Web API 發行商驗證金鑰
appid	uint32	✔

Flushes the display cache for assets. This will result in calls to GetAssetClassInfo for each asset class the next time it is displayed.

NOTE: 此呼叫方法需要發行商 API 金鑰才能使用。 因此這個 API 必須從安全的伺服器呼叫，同時用戶端也絕對不能直接使用此 API！

FlushContextCache

名稱	Type	必要	說明
key	string	✔	Steamworks Web API 發行商驗證金鑰
appid	uint32	✔

Flushes the cache of inventory contents. This will result in calls to GetContexts and GetContextContents to get fresh data for each user next time Steam needs their inventory.

NOTE: 此呼叫方法需要發行商 API 金鑰才能使用。 因此這個 API 必須從安全的伺服器呼叫，同時用戶端也絕對不能直接使用此 API！

GetTradeOffers

名稱	Type	必要	說明
key	string	✔	Steamworks Web API 發行商驗證金鑰。
get_sent_offers	bool	✔	Request the list of sent offers.
get_received_offers	bool	✔	Request the list of received offers.
get_descriptions	bool	✔	If set, the item display data for the items included in the returned trade offers will also be returned.
language	string	✔	The language to use when loading item display data.
active_only	bool	✔	Indicates we should only return offers which are still active, or offers that have changed in state since the time_historical_cutoff
historical_only	bool	✔	Indicates we should only return offers which are not active.
time_historical_cutoff	uint32	✔	When active_only is set, offers updated since this time will also be returned

Get a list of sent or received trade offers

GetTradeOffer

名稱	Type	必要	說明
key	string	✔	Steamworks Web API 發行商驗證金鑰。
tradeofferid	uint64	✔
language	string	✔

Gets a specific trade offer

GetTradeOffersSummary

名稱	Type	必要	說明
key	string	✔	Steamworks Web API 發行商驗證金鑰。
time_last_visit	uint32	✔	The time the user last visited. If not passed, will use the time the user last visited the trade offer page.

Get counts of pending and new trade offers