.NET SDK for CPlugin WebAPI: async REST and WebSocket (SignalR) client that works with MetaTrader 4 and MetaTrader 5 servers. Accounts, open positions, deposits, trade history, groups and symbols for brokers; envelope-aware, idempotency keys, per-request timeouts, paged iteration via IAsyncEnumerable. MetaTrader is a trademark of MetaQuotes Ltd.; this package is not affiliated with MetaQuotes.