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Main SDK Package

The Alpaca.Markets NuGet package contains the .NET SDK that provides unified access for different API endpoints:

• Alpaca Trading API - via the Alpaca.Markets.IAlpacaTradingClient interface (see mappings here).
• Alpaca Market Data API - via the Alpaca.Markets.IAlpacaDataClient interface (see mappings here).
• Alpaca Crypto Market Data API - via the Alpaca.Markets.IAlpacaCryptoDataClient interface (see mappings here).
• Alpaca Market Data Streaming API - via the Alpaca.Markets.IAlpacaDataStreamingClient interface.
• Alpaca Crypto Market Data Streaming API - via the Alpaca.Markets.IAlpacaCryptoDataStreamingClient interface.
• Alpaca Trading Data Streaming API - via the Alpaca.Markets.IAlpacaStreamingClient interface.

Extensions Package

The Alpaca.Markets.Extensions NuGet package contains the set of helper extension methods and interfaces for implementing some application- or scenario-specific tasks:

• The System.Collections.Generic.IAsyncEnumerable and System.IAsyncDisposable interfaces support for the Alpaca.Markets.IAlpacaDataSubscription class this page.
• The System.Collections.Generic.IAsyncEnumerable interface support for the Alpaca Data API v2 pagination discussed on this page.
• The new System.Net.Http.IHttpClientFactory interface and strongly-typed clients usage in modern apps discussed on this page.
• The streaming client auto-reconnection support discussed on this page.
• The Alpaca Proxy Agent support discussed on this page.

Additional Topics

• Two authentication options available for Alpaca API connectors discussed on this page.
• How to handle Paper and Live environments easily with the help of extension methods provided by SDK.
• Two main options for configuring new order placement requests: low-level and high-level described on this page.
• Fractional shares trading support discussed on this page