Order submission is a "self-custodial" request, a request that is guaranteed to not be alter-able by anyone except you, which means that it must past both:

orderbook authentication (steps 1-2)
on-chain signature verification (steps 3-4)

👍
If you are struggling to encode data correctly, you can use the public/order_debug endpoint. The route takes in all raw inputs and returns intermediary outputs shown in the below steps.

1. Authenticate

The first step is to login via WebSocket - see the Authentication section for more:

async function signAuthenticationHeader(): Promise<{[key: string]: string}> {
  const timestamp = Date.now().toString();
  const signature = await wallet.signMessage(timestamp);  
    return {
      wallet: wallet.address,
      timestamp: timestamp,
      signature: signature,
    };
}

const connectWs = async (): Promise<WebSocket> => {
    return new Promise((resolve, reject) => {
        const ws = new WebSocket(WS_ADDRESS);

        ws.on('open', () => {
            setTimeout(() => resolve(ws), 50);
        });

        ws.on('error', reject);

        ws.on('close', (code: number, reason: Buffer) => {
            if (code && reason.toString()) {
                console.log(`WebSocket closed with code: ${code}`, `Reason: ${reason}`);
            }
        });
    });
};

async function loginClient(wsc: WebSocket) {
    const login_request = JSON.stringify({
        method: 'public/login',
        params: await signAuthenticationHeader(),
        id: Math.floor(Math.random() * 10000)
    });
    wsc.send(login_request);
    await new Promise(resolve => setTimeout(resolve, 2000));
}

2. Define

See the WebSocket API reference for private/order on more param documentation.

function defineOrder(): any {
    return {
        instrument_name: OPTION_NAME,
        subaccount_id: subaccount_id,
        direction: "buy",
        limit_price: 310,
        amount: 1,
        signature_expiry_sec: Math.floor(Date.now() / 1000 + 600), // must be >5min from now
        max_fee: "0.01",
        nonce: Number(`${Date.now()}${Math.round(Math.random() * 999)}`), // LYRA nonce format: ${CURRENT UTC MS +/- 1 day}${RANDOM 3 DIGIT NUMBER}
        signer: wallet.address,
        order_type: "limit",
        mmp: false,
        signature: "filled_in_below"
    };
}

3. Sign

When a fill occurs, this signature will be verified by the on-chain Matching.sol contract to ensure that you approved this trade.


function encodeTradeData(order: any): string {
  let encoded_data = encoder.encode( // same as "encoded_data" in public/order_debug
  
    ['address', 'uint', 'int', 'int', 'uint', 'uint', 'bool'],
    [
      ASSET_ADDRESS, 
      OPTION_SUB_ID, 
      ethers.parseUnits(order.limit_price.toString(), 18), 
      ethers.parseUnits(order.amount.toString(), 18), 
      ethers.parseUnits(order.max_fee.toString(), 18), 
      order.subaccount_id, order.direction === 'buy'
    ]
  );
  return ethers.keccak256(Buffer.from(encoded_data.slice(2), 'hex')) // same as "encoded_data_hashed" in public/order_debug
}

async function signOrder(order: any) {
    const tradeModuleData = encodeTradeData(order)

    const action_hash = ethers.keccak256(
        encoder.encode(
          ['bytes32', 'uint256', 'uint256', 'address', 'bytes32', 'uint256', 'address', 'address'], 
          [
            ACTION_TYPEHASH, 
            order.subaccount_id, 
            order.nonce, 
            TRADE_MODULE_ADDRESS, 
            tradeModuleData, 
            order.signature_expiry_sec, 
            wallet.address, 
            order.signer
          ]
        )
    ); // same as "action_hash" in public/order_debug

    order.signature = wallet.signingKey.sign(
        ethers.keccak256(Buffer.concat([
          Buffer.from("1901", "hex"), 
          Buffer.from(DOMAIN_SEPARATOR.slice(2), "hex"), 
          Buffer.from(action_hash.slice(2), "hex")
        ]))  // same as "typed_data_hash" in public/order_debug
    ).serialized;
}

4. Send

You will most likely have more involved listeners, but for example purposes a built-in listener is added into the submitOrder function.

async function submitOrder(order: any, ws: WebSocket) {
    return new Promise((resolve, reject) => {
        const id = Math.floor(Math.random() * 1000);
        ws.send(JSON.stringify({
            method: 'private/order',
            params: order,
            id: id
        }));

        ws.on('message', (message: string) => {
            const msg = JSON.parse(message);
            if (msg.id === id) {
                console.log('Got order response:', msg);
                resolve(msg);
            }
        });
    });
}

Putting it all together

import { ethers } from "ethers";
import { WebSocket } from 'ws';
import dotenv from 'dotenv';

dotenv.config();

const PRIVATE_KEY = process.env.OWNER_PRIVATE_KEY as string;
const PROVIDER_URL = 'https://l2-prod-testnet-0eakp60405.t.conduit.xyz';
const WS_ADDRESS = 'wss://api-demo.lyra.finance/ws';
const ACTION_TYPEHASH = '0x4d7a9f27c403ff9c0f19bce61d76d82f9aa29f8d6d4b0c5474607d9770d1af17';
const DOMAIN_SEPARATOR = '0x9bcf4dc06df5d8bf23af818d5716491b995020f377d3b7b64c29ed14e3dd1105';
const ASSET_ADDRESS = '0xBcB494059969DAaB460E0B5d4f5c2366aab79aa1';
const TRADE_MODULE_ADDRESS = '0x87F2863866D85E3192a35A73b388BD625D83f2be';

const PROVIDER = new ethers.JsonRpcProvider(PROVIDER_URL);
const wallet = new ethers.Wallet(PRIVATE_KEY, PROVIDER);
const encoder = ethers.AbiCoder.defaultAbiCoder();
const subaccount_id = 9

const OPTION_NAME = 'ETH-20231027-1500-P'
const OPTION_SUB_ID = '644245094401698393600' // can retreive with public/get_instrument


async function signAuthenticationHeader(): Promise<{[key: string]: string}> {
  const timestamp = Date.now().toString();
  const signature = await wallet.signMessage(timestamp);  
    return {
      wallet: wallet.address,
      timestamp: timestamp,
      signature: signature,
    };
}

const connectWs = async (): Promise<WebSocket> => {
    return new Promise((resolve, reject) => {
        const ws = new WebSocket(WS_ADDRESS);

        ws.on('open', () => {
            setTimeout(() => resolve(ws), 50);
        });

        ws.on('error', reject);

        ws.on('close', (code: number, reason: Buffer) => {
            if (code && reason.toString()) {
                console.log(`WebSocket closed with code: ${code}`, `Reason: ${reason}`);
            }
        });
    });
};

async function loginClient(wsc: WebSocket) {
    const login_request = JSON.stringify({
        method: 'public/login',
        params: await signAuthenticationHeader(),
        id: Math.floor(Math.random() * 10000)
    });
    wsc.send(login_request);
    await new Promise(resolve => setTimeout(resolve, 2000));
}

function defineOrder(): any {
    return {
        instrument_name: OPTION_NAME,
        subaccount_id: subaccount_id,
        direction: "buy",
        limit_price: 310,
        amount: 1,
        signature_expiry_sec: Math.floor(Date.now() / 1000 + 600), // must be >5min from now
        max_fee: "0.01",
        nonce: Number(`${Date.now()}${Math.round(Math.random() * 999)}`), // LYRA nonce format: ${CURRENT UTC MS +/- 1 day}${RANDOM 3 DIGIT NUMBER}
        signer: wallet.address,
        order_type: "limit",
        mmp: false,
        signature: "filled_in_below"
    };
}

function encodeTradeData(order: any): string {
  let encoded_data = encoder.encode( // same as "encoded_data" in public/order_debug
    ['address', 'uint', 'int', 'int', 'uint', 'uint', 'bool'],
    [
      ASSET_ADDRESS, 
      OPTION_SUB_ID, 
      ethers.parseUnits(order.limit_price.toString(), 18), 
      ethers.parseUnits(order.amount.toString(), 18), 
      ethers.parseUnits(order.max_fee.toString(), 18), 
      order.subaccount_id, order.direction === 'buy']
    );
  return ethers.keccak256(Buffer.from(encoded_data.slice(2), 'hex')) // same as "encoded_data_hashed" in public/order_debug
}

async function signOrder(order: any) {
    const tradeModuleData = encodeTradeData(order)

    const action_hash = ethers.keccak256(
        encoder.encode(
          ['bytes32', 'uint256', 'uint256', 'address', 'bytes32', 'uint256', 'address', 'address'], 
          [
            ACTION_TYPEHASH, 
            order.subaccount_id, 
            order.nonce, 
            TRADE_MODULE_ADDRESS, 
            tradeModuleData, 
            order.signature_expiry_sec, 
            wallet.address, 
            order.signer
          ]
        )
    ); // same as "action_hash" in public/order_debug

    order.signature = wallet.signingKey.sign(
        ethers.keccak256(Buffer.concat([
          Buffer.from("1901", "hex"), 
          Buffer.from(DOMAIN_SEPARATOR.slice(2), "hex"), 
          Buffer.from(action_hash.slice(2), "hex")
        ]))  // same as "typed_data_hash" in public/order_debug
    ).serialized;
}

async function submitOrder(order: any, ws: WebSocket) {
    return new Promise((resolve, reject) => {
        const id = Math.floor(Math.random() * 1000);
        ws.send(JSON.stringify({
            method: 'private/order',
            params: order,
            id: id
        }));

        ws.on('message', (message: string) => {
            const msg = JSON.parse(message);
            if (msg.id === id) {
                console.log('Got order response:', msg);
                resolve(msg);
            }
        });
    });
}

async function completeOrder() {
    const ws = await connectWs();
    await loginClient(ws);
    const order = defineOrder();
    await signOrder(order);
    await submitOrder(order, ws);
}

completeOrder();

Solidity Objects

SignedAction Schema

Param	Type	Description
`subaccount_id`	`uint`	User subaccount id for the action (0 for a new subaccounts when depositing)
`nonce`	`uint`	Unique nonce defined as <UTC_timestamp in ms><random_number_up_to_6_digits> (e.g. 1695836058725001, where 001 is the random number)
`module`	`address`	Deposit module address (see Protocol Constants)
`data`	`bytes`	Encoded module data ("TradeModuleData" for orders)
`expiry`	`uint`	Signature expiry timestamp in sec
`owner`	`address`	Wallet address of the account owner
`signer`	`address`	Either owner wallet or session key

TradeModuleData Schema

Param	Type	Description
`asset`	`address`	Get with `public/get_instrument` (base_asset_address)
`subId`	`uint`	Sub ID of the asset (Get from public/get_instrument endpoint)
`amount`	`int`	Max amount willing to trade
`max_fee`	`uint`	max fee
`recipient_id`	`uint`	User subaccount id
`isBid`	`bool`	Bid or Ask

Submit Order [JavaScript]

👍
If you are struggling to encode data correctly, you can use the public/order_debug endpoint. The route takes in all raw inputs and returns intermediary outputs shown in the below steps.

1. Authenticate

2. Define

3. Sign

4. Send

Putting it all together

Solidity Objects

SignedAction Schema

TradeModuleData Schema

👍If you are struggling to encode data correctly, you can use the public/order_debug endpoint. The route takes in all raw inputs and returns intermediary outputs shown in the below steps.

1. Authenticate

2. Define

3. Sign

4. Send

Putting it all together

Solidity Objects

SignedAction Schema

TradeModuleData Schema

👍
If you are struggling to encode data correctly, you can use the public/order_debug endpoint. The route takes in all raw inputs and returns intermediary outputs shown in the below steps.