Place Limit Order

Place a limit order on Drift

Limit orders execute only at your specified price or better.

Complete Example

limit-order.ts

import {
  DriftClient,
  getLimitOrderParams,
  PositionDirection,
  PostOnlyParams,
  BASE_PRECISION,
  PRICE_PRECISION,
  BN,
} from '@drift-labs/sdk';

async function placeLimitOrder(driftClient: DriftClient) {
  const marketIndex = 0; // SOL-PERP

  // Buy 1 SOL-PERP at $145
  const limitPrice = new BN(145).mul(PRICE_PRECISION);
  const baseAssetAmount = new BN(1).mul(BASE_PRECISION);

  const orderParams = getLimitOrderParams({
    marketIndex,
    direction: PositionDirection.LONG,
    baseAssetAmount,
    price: limitPrice,
  });

  console.log('Placing limit order at $145...');
  const txSig = await driftClient.placePerpOrder(orderParams);
  console.log('Limit order placed:', txSig);

  // Get order details
  const user = driftClient.getUser();
  await user.fetchAccounts();
  
  const orders = user.getOpenOrders();
  const lastOrder = orders[orders.length - 1];
  
  if (lastOrder) {
    console.log('\nOrder details:');
    console.log('  Order ID:', lastOrder.orderId);
    console.log('  Price:', convertToNumber(lastOrder.price, PRICE_PRECISION));
    console.log('  Size:', convertToNumber(lastOrder.baseAssetAmount, BASE_PRECISION));
    console.log('  Status:', lastOrder.status);
  }
}

export { placeLimitOrder };

Post-Only Limit Order

Ensure your order only provides liquidity (maker):

const orderParams = getLimitOrderParams({
  marketIndex: 0,
  direction: PositionDirection.LONG,
  baseAssetAmount: new BN(1).mul(BASE_PRECISION),
  price: new BN(145).mul(PRICE_PRECISION),
  postOnly: PostOnlyParams.MUST_POST_ONLY, // Reject if would take
});

await driftClient.placePerpOrder(orderParams);

Reduce-Only Limit Order

Limit order that can only close positions:

const orderParams = getLimitOrderParams({
  marketIndex: 0,
  direction: PositionDirection.SHORT, // Close long
  baseAssetAmount: new BN(1).mul(BASE_PRECISION),
  price: new BN(160).mul(PRICE_PRECISION),
  reduceOnly: true, // Only close, never open/increase
});

await driftClient.placePerpOrder(orderParams);

IOC (Immediate or Cancel)

const orderParams = getLimitOrderParams({
  marketIndex: 0,
  direction: PositionDirection.LONG,
  baseAssetAmount: new BN(1).mul(BASE_PRECISION),
  price: new BN(145).mul(PRICE_PRECISION),
  immediateOrCancel: true, // Cancel unfilled portion
});

await driftClient.placePerpOrder(orderParams);

With Expiration

const orderParams = getLimitOrderParams({
  marketIndex: 0,
  direction: PositionDirection.LONG,
  baseAssetAmount: new BN(1).mul(BASE_PRECISION),
  price: new BN(145).mul(PRICE_PRECISION),
  maxTs: new BN(Date.now() / 1000 + 3600), // Expire in 1 hour
});

await driftClient.placePerpOrder(orderParams);

Next Steps

Modify Order

Modify existing orders

Cancel Order

Cancel orders