dexteritysdk 0.2.50

Client for Dexterity - a modular derivatives decentralized exchange reference implementation

Dexterity client SDK

Dexterity is a derivatives decentralized exchange running on Solana. This package provides the basic blocks in order to integrate and trade on Dexterity.

You can learn more about Dexterity here.

Prerequisites

• Solana.py

Creating the client

First, an instance of a Solana client is required.

from dexteritysdk.dex.sdk_context import SDKContext, SDKTrader
from solana.rpc.api import Client
from solana.keypair import Keypair
from solana.pubkey import Pubkey

def main():
	# use "https://api.mainnet-beta.solana.com" for mainnet
	network = "https://api.devnet.solana.com"
	client = Client(network)

A Keypair for the payer has to also be provided.

keypair = Keypair.from_secret_key(keypair_bytes)

The SDK also requires the Market Product Group (MPG) that we're going to trade on.

The public key of the default MPG is HiCy6vzuN3yLXD3z35D6nV7bzNLcyrvGLf3uSKuutSLo for mainnet or HyWxreWnng9ZBDPYpuYugAfpCMkRkJ1oz93oyoybDFLB for devnet.

# mainnet MPG
mpg = Pubkey("HiCy6vzuN3yLXD3z35D6nV7bzNLcyrvGLf3uSKuutSLo")

# ** OR **
# devnet MPG
mpg = Pubkey("HyWxreWnng9ZBDPYpuYugAfpCMkRkJ1oz93oyoybDFLB")

Now, we're ready to get an instance of SDKContext for this MPG.

ctx = SDKContext.connect(
	client=client,
	market_product_group_key=mpg,
	payer=keypair,
	raise_on_error=True
)

Registering new trader / TRG

If you're a new trader, creation of a trading account is required.

trader = ctx.register_trader(keypair)
trg_key = trader.account

The Trader Risk Group (TRG) is your trading account, that you can now use.

Using an existing TRG

If you already have a trader set up, you need to provide the TRG public key for it. The SDK allows you to list all your registered TRGs.

# this will return a list of your all your TRG public keys
# for example: [HeykeQWRh6DC2Tz5X3WBuWdMHicyECDEFGMjomV6LBye, HeyZNJ9gQVAEqHeCFFQ781E53d66DATKXHeynwnCFBye]
trg_keys = ctx.list_trader_risk_groups()

After finding your TRG, you can initialise the SDKTrader instance.

from dexteritysdk.codegen.dex.types import TraderRiskGroup
from dexteritysdk.program_ids import *
from dexteritysdk.utils.solana import explore

# ...
trader = SDKTrader.connect(ctx, trg_pubkey, keypair)

Funding the TRG

To start trading, you need to deposit funds. The tokens deposited have to be MPG vault mint tokens (e.g. USDC). The wallet you provided will be debited.

# this will deposit 733.1 USDC
trader.deposit(ctx, 733.1)

You can also withdraw in a similar fashion.

# this will withdraw 0.1 USDC back to your wallet
trader.withdraw(ctx, 0.1)

You can check your balance at any time.

trg, _ = trader.get_trader_risk_group()
trg.cash_balance

Trading on Dexterity

Listing trading products and order books

The products field of a SDKContext instance, is a list of the available trading products (SDKProduct). Every SDKProduct has a name and a get_orderbook(ctx) function that will return its order book (SDKOrderBook). The SDKOrderBook contains all SDKOrders on each side of the book.

Here's an example:

for product in ctx.products:
	book = product.get_orderbook(ctx, refresh=True)
	print(f"Printing the order book of {product.name}")
	for order in book.bids:
		print(f"Bid of size {order.qty} at {order.price}")
	for order in book.asks:
		print(f"Ask of size {order.qty} at {order.price}")

Placing an order

Placing an order is straightforward.

from dexteritysdk.utils.aob import Side
# ...
order_summary = trader.place_order(ctx, product, Side.ASK, size, price)

The returned SDKOrderSummary contains the order_id of the new order, as well as the remaining_qty and filled_qty if your order has been filled. If the order is immediately fully filled, order_id will be None.

If there's any error, an exception will be raised.

Cancelling orders

To cancel a previous order you can call trader.cancel(ctx, product, order_id). Following the previous example:

trader.cancel(ctx, product, order_summary.order_id)

You can also cancel all your open orders for multiple products.

# products is a list of SDKProduct
# if products list is empty or None, then all your open orders will be cancelled
products = [ctx.products[0], ctx.products[2]]
trader.cancel_all_orders(ctx, products)

If any cancel fails, an exception will be raised.

Positions

Positions can also be listed, by iterating the trader_positions array:

trg, _ = trader.get_trader_risk_group()
trg.trader_positions