Hyperliquid API SDK

Typescript SDK to more easily interact with Hyperliquid's API

All info on the Hyperliquid API can be found here: HyperLiquid API Documentation

Installation

npm install --save hyperliquid

Usage

API Agent Wallet Usage: If you are using API Agent wallets everything works as normal but you need to add your actual account's wallet address in the Hyperliquid object field 'walletAddress'.

If you don't do this you will be unable to use some of the SDK methods successfully. If you are using your own Private Key then it's not necessary as the SDK can derive your wallet address from the Private key.

const { Hyperliquid } = require('hyperliquid');

const sdk = new Hyperliquid(
  <private_key - string>,
  <testnet - boolean (OPTIONAL)>,
  <walletAddress - string (Required if you are using an API Agent Wallet, otherwise not necessary)>
);

// Use the SDK methods
sdk.info.getAllMids().then(allMids => {
  console.log(allMids);
});

Note: You don't have to provide your private key, but it is required if you want to use the exchange API to place, cancel or modify orders or access your accounts assets.

Symbol Naming Convention

Instead of using native symbols (which can be confusing, like @1, @4, @5 for spot and only the coin name for perps), we've implemented a more intuitive naming system:

• For perpetuals: <coin>-PERP (e.g., BTC-PERP, ETH-PERP)
• For spot: <coin>-SPOT (e.g., PURR-SPOT, BTC-SPOT)

This convention makes it easier to distinguish between spot and perpetual markets.

Examples

Exchange API Methods

// Place an order
sdk.exchange.placeOrder({
  coin: 'BTC-PERP',
  is_buy: true,
  sz: 1,
  limit_px: 30000,
  order_type: { limit: { tif: 'Gtc' } },
  reduce_only: false
  //vaultAddress <str> - optional field in case you are using vaults 
}).then(placeOrderResult => {
  console.log(placeOrderResult);
}).catch(error => {
  console.error('Error placing order:', error);
});

// Cancel an order
sdk.exchange.cancelOrder({
  coin: 'BTC-PERP',
  o: 123456 // order ID
}).then(cancelOrderResult => {
  console.log(cancelOrderResult);
}).catch(error => {
  console.error('Error cancelling order:', error);
});

// Transfer between perpetual and spot accounts
sdk.exchange.transferBetweenSpotAndPerp(100, true) // Transfer 100 USDC from spot to perp
  .then(transferResult => {
    console.log(transferResult);
  }).catch(error => {
    console.error('Error transferring funds:', error);
  });

All methods supported can be found here: Hyperliquid Exchange Endpoint API Documentation

General Info Methods

// Get all mids
sdk.info.getAllMids().then(allMids => {
  console.log(allMids);
}).catch(error => {
  console.error('Error getting all mids:', error);
});

// Get user open orders
sdk.info.getUserOpenOrders('user_address_here').then(userOpenOrders => {
  console.log(userOpenOrders);
}).catch(error => {
  console.error('Error getting user open orders:', error);
});

// Get L2 order book
sdk.info.getL2Book('BTC-PERP').then(l2Book => {
  console.log(l2Book);
}).catch(error => {
  console.error('Error getting L2 book:', error);
});

All methods supported can be found here: Hyperliquid Info Endpoint API Documentation

WebSocket Methods

const { Hyperliquid } = require('hyperliquid');

async function testWebSocket() {
    // Create a new Hyperliquid instance
    // You can pass a private key here if you need authenticated access
    const sdk = new Hyperliquid();

    try {
        // Connect to the WebSocket
        await sdk.connect();
        console.log('Connected to WebSocket');

        // Subscribe to get latest prices for all coins
        sdk.subscriptions.subscribeToAllMids((data) => {
            console.log('Received trades data:', data);
        });
        
        // Get updates anytime the user gets new fills
        sdk.subscriptions.subscribeToUserFills("<wallet_address_here>", (data) => {
            console.log('Received user fills data:', data);
        });
        
        // Get updates on 1 minute ETH-PERP candles
        sdk.subscriptions.subscribeToCandle("BTC-PERP", "1m", (data) => {
            console.log('Received candle data:', data);
        });

        // Keep the script running
        await new Promise(() => {});
    } catch (error) {
        console.error('Error:', error);
    }
}

testWebSocket();

Spot Info Methods

//Get spot metadata
sdk.info.spot.getSpotMeta().then(spotMeta => {
  console.log(spotMeta);
}).catch(error => {
  console.error('Error getting spot metadata:', error);
});

// Get spot clearinghouse state
sdk.info.spot.getSpotClearinghouseState('user_address_here').then(spotClearinghouseState => {
  console.log(spotClearinghouseState);
}).catch(error => {
  console.error('Error getting spot clearinghouse state:', error);
});

All methods supported can be found here: Hyperliquid Spot Info Endpoint API Documentation

Perpetuals Info Methods

// Get perpetuals metadata
sdk.info.perpetuals.getMeta().then(perpsMeta => {
  console.log(perpsMeta);
}).catch(error => {
  console.error('Error getting perpetuals metadata:', error);
});

// Get user's perpetuals account summary
sdk.info.perpetuals.getClearinghouseState('user_address_here').then(clearinghouseState => {
  console.log(clearinghouseState);
}).catch(error => {
  console.error('Error getting clearinghouse state:', error);
});

All methods supported can be found here: Hyperliquid Perpetuals Info Endpoint API Documentation

Custom Methods

// Cancel all orders
sdk.custom.cancelAllOrders().then(cancelAllResult => {
  console.log(cancelAllResult);
}).catch(error => {
  console.error('Error cancelling all orders:', error);
});

// Cancel all orders for a specific symbol
sdk.custom.cancelAllOrders('BTC-PERP').then(cancelAllBTCResult => {
  console.log(cancelAllBTCResult);
}).catch(error => {
  console.error('Error cancelling all BTC-PERP orders:', error);
});

// Get all tradable assets
const allAssets = sdk.custom.getAllAssets();
console.log(allAssets);

All Custom methods are listed above. These are custom methods that are not part of the official Hyperliquid API. As more are added we will add examples for them here.

Documentation

For more detailed documentation on all available methods and their parameters, please refer to the official Hyperliquid API documentation.

License

MIT