BloFin.Net

May 9, 2026 · View on GitHub

.NET License

BloFin.Net is a client library for accessing the BloFin 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 client 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.

.NET implementationVersion Support
.NET Core2.0 and higher
.NET Framework4.6.1 and higher
Mono5.4 and higher
Xamarin.iOS10.14 and higher
Xamarin.Android8.0 and higher
UWP10.0.16299 and higher
Unity2018.1 and higher

Install the library

NuGet

NuGet version Nuget downloads

dotnet add package BloFin.Net

GitHub packages

BloFin.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

GitHub Release

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

API key

For accessing authenticated endpoints an API key is required. When creating an API key in the BloFin web interface select Connect to Third-Party Application and select JKorf as the application name. BloFin requires users to select the application they're using with the API key. Selecting a different application will not work with the library.

How to use

Basic request:

// Get the ETH/USDT ticker via rest request
var restClient = new BloFinRestClient();
var tickerResult = await restClient.FuturesApi.ExchangeData.GetTickersAsync("ETH-USDT");
var lastPrice = tickerResult.Data.FirstOrDefault()?.LastPrice;

Place order:

var restClient = new BloFinRestClient(opts => {
	opts.ApiCredentials = new BloFinCredentials("APIKEY", "APISECRET");
});

// Place Limit order to go long for 0.1 ETH at 2000
var orderResult = await restClient.FuturesApi.Trading.PlaceOrderAsync(
    "ETH-USDT",
    OrderSide.Buy,
    OrderType.Limit,
    0.1m,
    MarginMode.Cross,
    2000,
    positionSide: PositionSide.Long);

WebSocket subscription:

// Subscribe to ETH/USDT ticker updates via the websocket API
var socketClient = new BloFinSocketClient();
var tickerSubscriptionResult = socketClient.FuturesApi.SubscribeToTickerUpdatesAsync("ETH-USDT", (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.

AI documentation

For AI coding assistants and quick onboarding:

CryptoExchange.Net

BloFin.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.

ExchangeRepositoryNuget
AsterJKorf/Aster.NetNuget version
BinanceJKorf/Binance.NetNuget version
BingXJKorf/BingX.NetNuget version
BitfinexJKorf/Bitfinex.NetNuget version
BitgetJKorf/Bitget.NetNuget version
BitMartJKorf/BitMart.NetNuget version
BitMEXJKorf/BitMEX.NetNuget version
BitstampJKorf/Bitstamp.NetNuget version
BybitJKorf/Bybit.NetNuget version
CoinbaseJKorf/Coinbase.NetNuget version
CoinExJKorf/CoinEx.NetNuget version
CoinGeckoJKorf/CoinGecko.NetNuget version
CoinWJKorf/CoinW.NetNuget version
Crypto.comJKorf/CryptoCom.NetNuget version
DeepCoinJKorf/DeepCoin.NetNuget version
Gate.ioJKorf/GateIo.NetNuget version
HTXJKorf/HTX.NetNuget version
HyperLiquidJKorf/HyperLiquid.NetNuget version
KrakenJKorf/Kraken.NetNuget version
KucoinJKorf/Kucoin.NetNuget version
MexcJKorf/Mexc.NetNuget version
OKXJKorf/OKX.NetNuget version
PolymarketJKorf/Polymarket.NetNuget version
ToobitJKorf/Toobit.NetNuget version
UpbitJKorf/Upbit.NetNuget version
WeexJKorf/Weex.NetNuget version
WhiteBitJKorf/WhiteBit.NetNuget version
XTJKorf/XT.NetNuget version

When using multiple of these API's the CryptoClients.Net package can be used which combines this and the other packages and allows easy access to all exchange API's.

Discord

Nuget version
A Discord server is available here. For discussion and/or questions around the CryptoExchange.Net and implementation libraries, feel free to join.

Supported functionality

Spot

APISupportedLocation
Spot API not yet available

Futures REST

APISupportedLocation
Public Data✓restClient.FuturesApi.ExchangeData
Account✓restClient.AccountApi
Trading✓restClient.FuturesApi.AccountApi/restClient.FuturesApi.TradingApi
User✓restClient.AccountApi
Copy TradingX
AffiliateX

Futures WebSocket

APISupportedLocation
Public Data✓socketClient.FuturesApi
Trading✓socketClient.FuturesApi
Copy TradingX

Support the project

Any support is greatly appreciated.

Make a one time donation in a crypto currency of your choice. If you prefer to donate a currency not listed here please contact me.

Btc: bc1q277a5n54s2l2mzlu778ef7lpkwhjhyvghuv8qf
Eth: 0xcb1b63aCF9fef2755eBf4a0506250074496Ad5b7
USDT (TRX) TKigKeJPXZYyMVDgMyXxMf17MWYia92Rjd

Alternatively, sponsor me on Github using Github Sponsors.

Release notes

  • Version 2.10.3 - 03 May 2026

    • Fixed Shared GetKlinesAsync request not returning kline when start time is exactly at the start of a kline

  • Version 2.10.2 - 09 Apr 2026

  • Version 2.10.1 - 24 Mar 2026

    • Fix issue in credentials copying

  • Version 2.10.0 - 24 Mar 2026

    • Updated CryptoExchange.Net to version 11.0.1, see https://github.com/JKorf/CryptoExchange.Net/releases/ for full release notes

    • Updated class for supplying API credentials from ApiCredentials to BloFinCredentials

    • Updated Shared order status parsing to default to Unknown value if not parsable

    • Added restClient.FuturesApi.ExchangeData.GetPositionTiersAsync endpoint

    • Notes for updating:

      • Update ApiCredentials to BloFinCredentials for authentication, i.e. ApiCredentials = new ApiCredentials(..) => ApiCredentials = new BloFinCredentials(..)

  • Version 2.9.0 - 09 Mar 2026

    • Added restClient.FuturesApi.Trading.GetPositionHistoryAsync endpoint
    • Added Shared IPositionHistoryRestClient implementation
    • Updated xml comments to include json fields

  • Version 2.8.0 - 06 Mar 2026

  • Version 2.7.0 - 24 Feb 2026

    • Updated CryptoExchange.Net to version 10.7.0
    • Added additional Http settings to client options
    • Updated Shared REST interfaces pagination logic
    • Updated HttpClient registration, fixing issue of DNS changes not getting processed
    • Fixed UserClientProvider using unconfigured HttpClient
    • Fixed restClient.FutuersApi.Trading.GetClosedOrdersAsync limit parameter serialization

  • Version 2.6.0 - 16 Feb 2026

  • Version 2.5.0 - 10 Feb 2026

  • Version 2.4.0 - 06 Feb 2026

    • Updated CryptoExchange.Net to version 10.4.0, see https://github.com/JKorf/CryptoExchange.Net/releases/ for full release notes
    • Added BloFinUserFuturesDataTracker
    • Added additional methods for requesting supported symbols to Shared IFuturesSymbolRestClient interfaces
    • Added PositionMode mapping on SharedPosition models
    • Added Status mapping for SharedDeposit models
    • Fixed disposed clients getting returned from UserClientProvider
    • Fixed issues in SubscribeToPositionUpdatesAsync, SubscribeToOrderUpdatesAsync and SubscribeToTriggerOrderUpdatesAsync update processing
    • Fixed BloFinPosition deserialization issue

  • Version 2.3.0 - 22 Jan 2026

    • Updated CryptoExchange.Net to version 10.3.0, see https://github.com/JKorf/CryptoExchange.Net/releases/ for full release notes
    • Removed legacy websocket message handling and the corresponding UseUpdatedDeserialization client option
    • Added Metadata to BloFinExchange

  • Version 2.2.1 - 14 Jan 2026

  • Version 2.2.0 - 13 Jan 2026

    • Updated CryptoExchange.Net to version 10.2.0, see https://github.com/JKorf/CryptoExchange.Net/releases/ for full release notes
    • Added SequenceNumber to order book websocket updates
    • Added timestamping to SymbolOrderBook implementation
    • Updated SymbolOrderBook sequence checking

  • Version 2.1.1 - 07 Jan 2026

    • Disabled default enabled AutoTimestamp as it's not support by API

  • Version 2.1.0 - 07 Jan 2026

    • Updated CryptoExchange.Net version to 10.1.0, see https://github.com/JKorf/CryptoExchange.Net/releases/ for full release notes
    • Added DataTimeLocal and DataAge properties to DataEvent object
    • Added UpdateServerTime, UpdateLocalTime and DataAge properties to (I)SymbolOrderBook

  • Version 2.0.0 - 16 Dec 2025

    • Added Net10.0 target framework
    • Updated CryptoExchange.Net version to 10.0.0, see https://github.com/JKorf/CryptoExchange.Net/releases/ for full release notes
    • Improved performance across the board, biggest gains in websocket message processing
    • Updated REST message response handling
    • Updated WebSocket message handling
    • Added UseUpdatedDeserialization socket client options to toggle by new and old message handling
    • Added SocketIndividualSubscriptionCombineTarget socket client option
    • Updated Shared API's subscription update types from ExchangeEvent to DataEvent
    • Fixed exception in Shared GetFuturesTickersAsync endpoint when request fails

  • Version 1.4.0 - 11 Nov 2025

  • Version 1.3.0 - 03 Nov 2025

    • Updated CryptoExchange.Net to version 9.12.0
    • Added support for using SharedSymbol.UsdOrStable in Shared APIs
    • Fixed exception when initial trade snapshot has no items in TradeTracker
    • Removed some unhelpful verbose logs

  • Version 1.2.0 - 16 Oct 2025

  • Version 1.1.0 - 30 Sep 2025

  • Version 1.0.0 - 17 Sep 2025

    • Initial release