BloFin.Net 2.10.2

BloFin.Net

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.

Install the library

NuGet

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

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.

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.

Exchange	Repository	Nuget
Aster	JKorf/Aster.Net
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
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
Toobit	JKorf/Toobit.Net
Upbit	JKorf/Upbit.Net
WhiteBit	JKorf/WhiteBit.Net
XT	JKorf/XT.Net

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

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

Futures REST

Futures WebSocket

Support the project

Any support is greatly appreciated.

Donate

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

Sponsor

Alternatively, sponsor me on Github using Github Sponsors.

Release notes

• Version 2.10.2 - 09 Apr 2026

  • Updated CryptoExchange.Net to version 11.1.0, see https://github.com/JKorf/CryptoExchange.Net/releases/ for full release notes

• 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

  • Updated CryptoExchange.Net to version 10.8.0, see https://github.com/JKorf/CryptoExchange.Net/releases/ for full release notes
  • Improved method XML comments

• 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

  • Updated CryptoExchange.Net to version 10.6.0, see https://github.com/JKorf/CryptoExchange.Net/releases/ for full release notes
  • Fixed SymbolOrderBook websocket subscription not getting closed if when waiting for initial data times out

• Version 2.5.0 - 10 Feb 2026

  • Updated CryptoExchange.Net to version 10.5.1, see https://github.com/JKorf/CryptoExchange.Net/releases/ for full release notes
  • Fixed websocket query topic mapping
  • Updated UserClientProvider internal client cache to non-static to prevent cleanup issues

• 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

  • Updated CryptoExchange.Net to version 10.2.3, see https://github.com/JKorf/CryptoExchange.Net/releases/ for full release notes

• 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

  • Updated CryptoExchange.Net version to 9.13.0, see https://github.com/JKorf/CryptoExchange.Net/releases/
  • Added restClient.FuturesApi.Trading.GetOrderAsync endpoint
  • Added restClient.FuturesApi.Trading.GetTpSlOrderAsync endpoint

• 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

  • Updated CryptoExchange.Net version to 9.10.0, see https://github.com/JKorf/CryptoExchange.Net/releases/

• Version 1.1.0 - 30 Sep 2025

  • Updated CryptoExchange.Net version to 9.8.0, see https://github.com/JKorf/CryptoExchange.Net/releases/
  • Added ITrackerFactory to TrackerFactory implementation
  • Added missing Shared service registration for account endpoints

• Version 1.0.0 - 17 Sep 2025

  • Initial release