Delegated Orders

The DelegatedOrderService enables partners with the delegated_signing scope to place and cancel orders on behalf of their sub-accounts. The server signs orders using the sub-account’s managed Privy wallet — no private key management is needed on the partner side.

Delegated signing requires a sub-account created with createServerWallet: true. EOA sub-accounts sign their own orders.

Recommended setup: Store your HMAC credentials (tokenId / secret) on your backend. Use this SDK server-side to sign partner-authenticated requests. Expose only your own app-specific endpoints to the frontend. Never expose HMAC secrets in browser bundles or client-side storage.

Access

import { Client } from '@limitless-exchange/sdk';

const client = new Client({
  baseURL: 'https://api.limitless.exchange',
  hmacCredentials: { tokenId, secret },
});

// Use client.delegatedOrders.*

Create a GTC delegated order

Builds an unsigned GTC (Good-Til-Cancelled) limit order locally and submits it to POST /orders with the onBehalfOf profile ID. The server signs the order via the sub-account’s managed wallet. GTC orders remain on the orderbook until filled or explicitly cancelled.

import { OrderType, Side } from '@limitless-exchange/sdk';

const response = await client.delegatedOrders.createOrder({
  marketSlug: 'btc-100k',
  orderType: OrderType.GTC,
  onBehalfOf: partnerAccount.profileId,
  args: {
    tokenId: market.tokens.yes,
    side: Side.BUY,
    price: 0.55,
    size: 10,
  },
});

console.log(response.order.id);

Use postOnly: true in the args to ensure the order only rests on the book and is never filled immediately as a taker:

const response = await client.delegatedOrders.createOrder({
  marketSlug: 'btc-100k',
  orderType: OrderType.GTC,
  onBehalfOf: partnerAccount.profileId,
  args: {
    tokenId: market.tokens.yes,
    side: Side.BUY,
    price: 0.55,
    size: 10,
    postOnly: true,
  },
});

Create a FAK delegated order

FAK (Fill-And-Kill) orders use the same price and size inputs as GTC, but they only consume immediately available liquidity and cancel any unmatched remainder. postOnly is not supported for FAK orders.

import { OrderType, Side } from '@limitless-exchange/sdk';

const response = await client.delegatedOrders.createOrder({
  marketSlug: 'btc-100k',
  orderType: OrderType.FAK,
  onBehalfOf: partnerAccount.profileId,
  args: {
    tokenId: market.tokens.yes,
    side: Side.BUY,
    price: 0.45,
    size: 10,
  },
});

if (response.makerMatches?.length) {
  console.log(`FAK order matched immediately with ${response.makerMatches.length} fill(s)`);
} else {
  console.log('FAK remainder was cancelled.');
}

Create a FOK delegated order

FOK (Fill-Or-Kill) orders execute immediately at the best available price or are cancelled entirely — there are no partial fills. Instead of price and size, FOK orders use makerAmount:

BUY: makerAmount is the USDC amount to spend (e.g., 50 = spend $50 USDC)
SELL: makerAmount is the number of shares to sell (e.g., 18.64 = sell 18.64 shares)

import { OrderType, Side } from '@limitless-exchange/sdk';

// BUY FOK — spend 1 USDC at market price
const buyResponse = await client.delegatedOrders.createOrder({
  marketSlug: 'btc-100k',
  orderType: OrderType.FOK,
  onBehalfOf: partnerAccount.profileId,
  feeRateBps: 300,
  args: {
    tokenId: market.tokens.yes,
    side: Side.BUY,
    makerAmount: 1,
  },
});

if (buyResponse.makerMatches?.length) {
  console.log(`FOK order matched with ${buyResponse.makerMatches.length} fill(s)`);
} else {
  console.log('FOK order was not matched — cancelled automatically');
}

// SELL FOK — sell 10 shares at market price
const sellResponse = await client.delegatedOrders.createOrder({
  marketSlug: 'btc-100k',
  orderType: OrderType.FOK,
  onBehalfOf: partnerAccount.profileId,
  args: {
    tokenId: market.tokens.yes,
    side: Side.SELL,
    makerAmount: 10,
  },
});

Parameters

GTC order args

Field	Type	Description
`marketSlug`	`string`	Market identifier
`orderType`	`OrderType`	`OrderType.GTC`
`onBehalfOf`	`number`	Profile ID of the sub-account
`args.tokenId`	`string`	Position token ID (YES or NO) from market data
`args.side`	`Side`	`BUY` (0) or `SELL` (1)
`args.price`	`number`	Price between 0 and 1
`args.size`	`number`	Number of contracts
`args.postOnly`	`boolean`	Optional. `true` rejects the order if it would immediately match. Default `false`.
`feeRateBps`	`number`	Fee rate in basis points (defaults to 300 if omitted)

FAK order args

Field	Type	Description
`marketSlug`	`string`	Market identifier
`orderType`	`OrderType`	`OrderType.FAK`
`onBehalfOf`	`number`	Profile ID of the sub-account
`args.tokenId`	`string`	Position token ID (YES or NO) from market data
`args.side`	`Side`	`BUY` (0) or `SELL` (1)
`args.price`	`number`	Price between 0 and 1
`args.size`	`number`	Number of contracts
`feeRateBps`	`number`	Fee rate in basis points (defaults to 300 if omitted)

FOK order args

Field	Type	Description
`marketSlug`	`string`	Market identifier
`orderType`	`OrderType`	`OrderType.FOK`
`onBehalfOf`	`number`	Profile ID of the sub-account
`args.tokenId`	`string`	Position token ID (YES or NO) from market data
`args.side`	`Side`	`BUY` (0) or `SELL` (1)
`args.makerAmount`	`number`	BUY: USDC to spend. SELL: shares to sell. Max 6 decimals.
`feeRateBps`	`number`	Fee rate in basis points (defaults to 300 if omitted)

Cancel an order

Cancel an order placed by the partner or on behalf of a sub-account.

await client.delegatedOrders.cancel(orderId);

Cancel on behalf of a sub-account

await client.delegatedOrders.cancelOnBehalfOf(orderId, partnerAccount.profileId);

Cancel all orders in a market

await client.delegatedOrders.cancelAll(marketSlug);

Cancel all on behalf of a sub-account

await client.delegatedOrders.cancelAllOnBehalfOf(marketSlug, partnerAccount.profileId);

How it works

The SDK builds an unsigned order locally using OrderBuilder with a zero verifying address
For GTC and FAK orders, price and size are used; for FOK orders, makerAmount is used (with takerAmount always set to 1)
The order is posted to POST /orders with onBehalfOf and ownerId set to the sub-account’s profile ID
The server detects the delegated_signing scope and missing signature
The server looks up the sub-account’s server wallet, builds EIP-712 typed data, and signs via Privy
The signed order is submitted to the CLOB engine — GTC orders can rest on the book, FAK orders cancel unmatched remainder, and FOK orders either fully fill or cancel

Getting Started

Quick Start

TypeScript SDK

Python SDK

Go SDK

Rust SDK

WebSocket

Access

Create a GTC delegated order

Create a FAK delegated order

Create a FOK delegated order

Parameters

GTC order args

FAK order args

FOK order args

Cancel an order

Cancel on behalf of a sub-account

Cancel all orders in a market

Cancel all on behalf of a sub-account

How it works

​Access

​Create a GTC delegated order

​Create a FAK delegated order

​Create a FOK delegated order

​Parameters

​GTC order args

​FAK order args

​FOK order args

​Cancel an order

​Cancel on behalf of a sub-account

​Cancel all orders in a market

​Cancel all on behalf of a sub-account

​How it works

Access

Create a GTC delegated order

Create a FAK delegated order

Create a FOK delegated order

Parameters

GTC order args

FAK order args

FOK order args

Cancel an order

Cancel on behalf of a sub-account

Cancel all orders in a market

Cancel all on behalf of a sub-account

How it works