Alpaca Trade API for Swift

https://alpaca.markets/docs/

Alpaca is a type-safe Swift client for the Alpaca trade API.

Currently a work in progress. The currently implemented methods and types are documented on the Wiki.

Usage

Alpaca defaults to paper trading mode.

let alpaca = Alpaca(key: Alpaca.Key(key: "[YOUR-API-KEY]", secret: "[YOUR-API-SECRET]"))

Placing an order

Alpaca is primarily a closure-based API, and provides a Result type for API responses:

let order = OrderRequest(
    symbol: "AAPL",
    qty: 1,
    side: .buy,
    type: .limit,
    timeInForce: .day,
    limitPrice: 320,
    extendedHours: false
)

alpaca.place(order: order) { result in
    switch result {
    case .success(let placedOrder):
        print(placedOrder)
    case .failure(let error):
        print(error)
    }
}

Placing an order using the Combine interface

Alpaca also offers a Combine interface:

var bag = Set<AnyCancellable>()

alpaca.place(order: order).sink(
    receiveCompletion: { _ in },
    receiveValue: { placedOrder in
        print(placedOrder)
    }
).store(in: &bag)