Modifying Orders

Modify existing orders in-place without cancelling and re-placing

Modify existing orders in-place without cancelling and re-placing them.

The examples on this page use Hyperliquid (provider: 'hyperliquid'). Replace the provider value with any supported DEX from getProviders().

USER_AGENT mode (automatic signing)

const result = await perps.modifyOrders({
  provider: 'hyperliquid',
  address: userAddress,
  modifications: [
    { id: '12345678', price: '94500.00', size: '0.2' },
  ],
});

console.log(result.results);
// [{ action: 'modifyOrder', success: true }]

USER mode (manual signing)

import { createAction, executeAction } from '@lifi/perps-sdk';

// Step 1: Build modify payloads
const { actions } = await createAction(client, {
  provider: 'hyperliquid',
  address: userAddress,
  action: 'modifyOrder',
  params: {
    modifications: [
      { id: '12345678', price: '94500.00' },
    ],
  },
});

// Step 2: Sign and submit
const signedActions = await Promise.all(
  actions.map(async (a) => ({
    action: a.action,
    typedData: a.typedData,
    signature: await walletClient.signTypedData({ ...a.typedData }),
  }))
);

await executeAction(client, {
  provider: 'hyperliquid',
  address: userAddress,
  action: 'modifyOrder',
  actions: signedActions,
});

ModifyOrderInput fields

Field	Type	Required	Description
id	string	Yes	Order ID to modify
price	string	No	New limit price
size	string	No	New order size
triggerPrice	string	No	New trigger price (for trigger orders)
limitPrice	string	No	New limit price for trigger execution

API Reference: POST /actions