Aster.Net

Aster.Net is a client library for accessing the Aster DEX REST and Websocket API.

Features

Response data is mapped to descriptive models
Input parameters and response values are mapped to discriptive enum values where possible
High performance
Automatic websocket (re)connection management
Client side rate limiting
Client side order book implementation
Support for managing different accounts
Extensive logging
Support for different environments
Easy integration with other exchange clients based on the CryptoExchange.Net base library
Native AOT support

Supported Frameworks

The library is targeting both .NET Standard 2.0 and .NET Standard 2.1 for optimal compatibility, as well as the latest dotnet versions to use the latest framework features.

Install the library

NuGet

dotnet add package JKorf.Aster.Net

GitHub packages

Aster.Net is available on GitHub packages. You'll need to add https://nuget.pkg.github.com/JKorf/index.json as a NuGet package source.

Download release

The NuGet package files are added along side the source with the latest GitHub release which can found here.

How to use

Basic request:

// Get the ETH/USDT ticker via rest request
var restClient = new AsterRestClient();
var tickerResult = await restClient.SpotApiV3.ExchangeData.GetTickerAsync("ETHUSDT");
var lastPrice = tickerResult.Data.LastPrice;

Place order:

var restClient = new AsterRestClient(opts => {
	opts.ApiCredentials = new AsterV3Credential("PRIVATEKEY", "SIGNERPRIVATEKEY");
});

// Place Limit order to go long for 0.1 ETH at 2000
var orderResult = await asterRestClient.FuturesV3Api.Trading.PlaceOrderAsync(
	"ETHUSDT",
	OrderSide.Buy,
	OrderType.Limit,
	0.1m,
	2000,
	positionSide: PositionSide.Long);

WebSocket subscription:

// Subscribe to ETH/USDT ticker updates via the websocket API
var socketClient = new AsterSocketClient();
var tickerSubscriptionResult = socketClient.SpotApiV3.SubscribeToTickerUpdatesAsync("ETHUSDT", (update) => 
{
  var lastPrice = update.Data.LastPrice;
});

For information on the clients, dependency injection, response processing and more see the documentation, or have a look at the examples here or here.

NOTE
Aster.Net uses the Builder Code mechanism for Aster when using the V3 API, which means that an additional 1bps / 0.01% fee is charged on top of orders placed with the library to fund development. This is entirely optional and can be disabled in the client options by setting BuilderFeePercentage to 0 or null in the client options.

Authentication

Depending on the API used different credentials types are required.
SpotV3Api / FuturesV3Api
The V3 API is recommended, API credentials can be provided via the AsterV3Credential overload available on the AsterCredentials object. The private key is the user private key, the private signer key can be obtained via the Aster UI under [Api Management] => [Pro Api]

var credentials = new AsterCredentials(new AsterV3Credential("PRIVATEKEY", "SIGNERPRIVATEKEY"));
var client = new AsterRestClient(opts => { opts.ApiCredentials = credentials; });
var result = await client.FuturesV3Api.Account.GetBalancesAsync();

SpotApi / FuturesApi
The API key and secret can be obtained via the Aster UI under [Api Management] => [Api]

var credentials = new AsterCredentials(new HMACCredential("APIKEY", "APISECRET"));
var client = new AsterRestClient(opts => { opts.ApiCredentials = credentials; });
var result = await client.FuturesApi.Account.GetBalancesAsync();

CryptoExchange.Net

Aster.Net is based on the CryptoExchange.Net base library. Other exchange API implementations based on the CryptoExchange.Net base library are available and follow the same logic.

CryptoExchange.Net also allows for easy access to different exchange API's.

|Exchange|Repository|Nuget| |--|--|--| |Binance|JKorf/Binance.Net|| |BingX|JKorf/BingX.Net|| |Bitfinex|JKorf/Bitfinex.Net|| |Bitget|JKorf/Bitget.Net|| |BitMart|JKorf/BitMart.Net|| |BitMEX|JKorf/BitMEX.Net|| |Bitstamp|JKorf/Bitstamp.Net|| |BloFin|JKorf/BloFin.Net|| |Bybit|JKorf/Bybit.Net|| |Coinbase|JKorf/Coinbase.Net|| |CoinEx|JKorf/CoinEx.Net|| |CoinGecko|JKorf/CoinGecko.Net|| |CoinW|JKorf/CoinW.Net|| |Crypto.com|JKorf/CryptoCom.Net|| |DeepCoin|JKorf/DeepCoin.Net|| |Gate.io|JKorf/GateIo.Net|| |HTX|JKorf/HTX.Net|| |HyperLiquid|JKorf/HyperLiquid.Net|| |Kraken|JKorf/Kraken.Net|| |Kucoin|JKorf/Kucoin.Net|| |Mexc|JKorf/Mexc.Net|| |OKX|JKorf/OKX.Net|| |Polymarket|JKorf/Polymarket.Net|[ Nuget version ](https://www.