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CoinPaprika Swift SDK

The official Swift client library for the CoinPaprika API provides convenient, static access to cryptocurrency market data.

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Installation

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Swift Package Manager (SPM)

Add the following package dependency to your Package.swift file or via Xcode: 
https://github.com/coinpaprika/coinpaprika-api-swift-client

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CocoaPods

Add the following line to your Podfile and run pod install: 
pod 'CoinpaprikaAPI'

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Quick Start

First, import the library: 
import Coinpaprika
Then, you can call any API endpoint via the static Coinpaprika.API object. All requests are asynchronous and return a Result type in a closure. 
// Get global market stats
Coinpaprika.API.global().perform { result in
    switch result {
    case .success(let stats):
        print("Market Cap: $\(stats.marketCapUsd)")
        print("24h Volume: $\(stats.volume24hUsd)")
        print("Bitcoin Dominance: \(stats.bitcoinDominancePercentage)%")
    case .failure(let error):
        print("An error occurred: \(error)")
    }
}

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Using the Pro API

To use the Pro API, you must manually change the base URL in the Configuration object before making any requests. This should be done once when your app launches. 
import Coinpaprika

// Set the base URL to the Pro endpoint
Coinpaprika.Configuration.baseUrl = URL(string: "https://api-pro.coinpaprika.com/v1/")!

// Now all subsequent requests will use the Pro API
Coinpaprika.API.tickers().perform { result in
    // Pro plan provides access to all tickers
    if case .success(let tickers) = result {
        print("Successfully fetched \(tickers.count) tickers using the Pro API.")
    }
}

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Common Use Cases

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Ticker Data for a Specific Coin

import Coinpaprika

Coinpaprika.API.ticker(id: "btc-bitcoin", quotes: [.usd, .btc]).perform { response in
    switch response {
    case .success(let ticker):
        print("Bitcoin Information:")
        print("Name: \(ticker.name)")
        print("Symbol: \(ticker.symbol)")
        
        // Access quotes using subscripting
        if let usdQuote = ticker[.usd] {
            print("USD Price: $\(usdQuote.price)")
            print("Market Cap: $\(usdQuote.marketCap)")
        }
        
        if let btcQuote = ticker[.btc] {
            print("BTC Price: ₿\(btcQuote.price)")
        }
    case .failure(let error):
        print("Error: \(error)")
    }
}

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Coin Details

import Coinpaprika

Coinpaprika.API.coin(id: "eth-ethereum").perform { response in
    switch response {
    case .success(let coin):
        print("Ethereum Details:")
        print("Name: \(coin.name)")
        print("Description: \(coin.description ?? "N/A")")
        print("Development Status: \(coin.developmentStatus)")
    case .failure(let error):
        print("Error: \(error)")
    }
}

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Historical Ticker Data

Note: Accessing historical data requires using the Pro API. 
import Coinpaprika

// Ensure Pro API is configured
Coinpaprika.Configuration.baseUrl = URL(string: "https://api-pro.coinpaprika.com/v1/")!

let sevenDaysAgo = Calendar.current.date(byAdding: .day, value: -7, to: Date())!

Coinpaprika.API.historicalTicks(
    id: "btc-bitcoin",
    start: sevenDaysAgo,
    limit: 100,
    quote: .usd
).perform { response in
    switch response {
    case .success(let ticks):
        print("Recent Historical Ticks for Bitcoin:")
        ticks.forEach { tick in
            print("[\(tick.timestamp)] Price: $\(tick.price), Volume: \(tick.volume24h)")
        }
    case .failure(let error):
        print("Error fetching historical ticks: \(error)")
    }
}

import Coinpaprika

Coinpaprika.API.search(
    query: "proof-of-work",
    categories: [.tags]
).perform { response in
    switch response {
    case .success(let searchResults):
        print("Found \(searchResults.tags.count) tags for 'proof-of-work'")
        searchResults.tags.forEach { tag in
            print("- \(tag.name) (Coin count: \(tag.coinCounter))")
        }
    case .failure(let error):
        print("Error: \(error)")
    }
}

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Error Handling

The Result object in the completion handler provides a detailed RequestError case for failures. 
import Coinpaprika

Coinpaprika.API.coin(id: "invalid-coin-id").perform { response in
    if case .failure(let error) = response {
        switch error {
        case .networkError(let underlyingError):
            print("Network error: \(underlyingError.localizedDescription)")
        case .decodingError(let underlyingError):
            print("Decoding error: \(underlyingError)")
        case .httpError(let statusCode, let data):
            let errorBody = String(data: data, encoding: .utf8) ?? "No response body"
            print("HTTP error \(statusCode): \(errorBody)")
        case .unknown:
            print("An unknown error occurred.")
        }
    }
}

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Async/Await Support (iOS 13+ / macOS 10.15+)

The SDK supports modern concurrency with async/await. 
import Coinpaprika

@available(macOS 10.15, iOS 13.0, tvOS 13.0, watchOS 6.0, *)
func getMarketData() async {
    do {
        let globalStats = try await Coinpaprika.API.global().async()
        print("Market Cap: $\(globalStats.marketCapUsd)")
        
        let tickers = try await Coinpaprika.API.tickers(quotes: [.usd]).async()
        print("Retrieved \(tickers.count) tickers")
    } catch {
        print("An error occurred: \(error)")
    }
}

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Available Methods

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Global Data

  • global() - Get global market overview.

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Coins

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Tickers

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Exchanges

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People & Tags

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Search & Tools

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Requirements

  • iOS 10.0+ / macOS 10.12+ / watchOS 3.0+ / tvOS 10.0+
  • Swift 4.2+

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License

This library is available under the MIT license. See the LICENSE file for more info.