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

• 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

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.

dotnet add package JKorf.Lighter.Net

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

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

Basic request:

// Get the ETH/USDC ticker via rest request
var restClient = new LighterRestClient();
var tickerResult = await restClient.ExchangeApi.ExchangeData.GetSymbolDetailsAsync("ETH/USDC");
if (!tickerResult.Success)
{
    Console.WriteLine($"Error: {tickerResult.Error}");
    return;
}

var lastPrice = tickerResult.Data.SpotSymbols[0].LastPrice;

Place order:

var restClient = new LighterRestClient(opts => {
    opts.ApiCredentials = new LighterCredentials(EthKey.FromPrivateKey("KEY"), 123, 5, "APISECRET");
});

// Place Limit order to go 0.1 long for ETH at 2000
var orderResult = await restClient.ExchangeApi.Trading.PlaceOrderAsync(
    "ETH",
    OrderSide.Buy,
    OrderType.Limit,
    0.1m,
    2000m,
    timeInForce: TimeInForce.GoodTillTime
    );

WebSocket subscription:

// Subscribe to ETH/USDC ticker updates via the websocket API
var socketClient = new LighterSocketClient();
var tickerSubscriptionResult = socketClient.ExchangeApi.ExchangeData.SubscribeToSpotTickerUpdatesAsync("ETH/USDC", (update) =>
{
    var lastPrice = update.Data.Ticker.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
Lighter.Net uses the Integrator Code mechanism for Lighter, 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 IntegratorFeePercentage to 0 or null in the client options.

Lighter.Net includes AI-oriented documentation and examples for code generation tools:

See cryptoexchange-skills-hub for installable skills.

Lighter.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
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
Pionex	JKorf/Pionex.Net
Polymarket	JKorf/Polymarket.Net
Toobit	JKorf/Toobit.Net
Upbit	JKorf/Upbit.Net
Weex	JKorf/Weex.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.

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

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.

• Version 1.3.0 - 21 Jul 2026

  • Updated CryptoExchange.Net to v12.2.0
  • Added SpotSymbolCatalog to Shared ISpotSymbolRestClient interface
  • Added FuturesSymbolCatalog to Shared IFuturesSymbolRestClient interface
  • Added BaseAssetType, BaseAssetSubType, QuoteAssetType and QuoteAssetSubType to GetSymbolsRequest model
  • Added DisplayName to SharedSpotSymbol and SharedFuturesSymbol models
  • Added BaseAssetType, BaseAssetSubType, QuoteAssetType and QuoteAssetSubType to SharedSpotSymbol and SharedFuturesSymbol models
  • Added DebuggerDisplay attributes to Shared models
  • Added restClient.ExchangeApi.ExchangeData.GetTokensAsync endpoint

• Version 1.2.2 - 14 Jul 2026

  • Fixed Shared API UserTrades incorrect order side parsing

• Version 1.2.1 - 13 Jul 2026

  • Updated LighterAccountUpdate model fixing deserialization issue when FundingHistories is set
  • Fixed exception during authentication when retrying requests

• Version 1.2.0 - 09 Jul 2026

  • Updated CryptoExchange.Net to v12.1.0

• Version 1.1.6 - 08 Jul 2026

  • Fixed missing parameters in SignModifyOrderDelegate causing EditOrderAsync to fail

• Version 1.1.5 - 07 Jul 2026

  • Fixed hardcoded price scaling logic

• Version 1.1.4 - 06 Jul 2026

  • Fixed hardcoded price scaling logic

• Version 1.1.3 - 04 Jul 2026

  • Fixed automatic refresh of auth tokens after expiry

• Version 1.1.2 - 04 Jul 2026

  • Fixed signer libs not getting included in output

• Version 1.1.1 - 03 Jul 2026

  • Fixed native library finding when using NuGet package

• Version 1.1.0 - 03 Jul 2026

  • Added IFundingRateRestClient Shared API implementation

  • Updated authentication, added L1 signing support

  • Fixed missing namespaces for some enums

  • Fixed libraries not getting included in Nuget/publish

  • Notes for updating:

    • API credentials providing has been updated to now take a EthKey object, for example new LighterCredentials(EthKey.FromPublicKey(..), ..)

• Version 1.0.1 - 30 Jun 2026

  • Fixed WebSocket unsubscribe not working correctly

• Version 1.0.0 - 29 Jun 2026

  • Initial release