TPlus Python Client Utilities

Python clients for interacting with tplus.

Install

To install, use either pip or uv pip:

uv pip install -e .

Usage Example

REST and WebSocket Client (tplus.client)

The tpluspy library also provides an asynchronous client (OrderBookClient) for interacting with the tplus-core REST API and WebSocket streams.

Initialization

To use the client, first initialize it with a User object (for signing requests) and the base URL of your tplus-core instance:

import asyncio
from tplus.client import OrderBookClient
from tplus.utils.user import User

API_BASE_URL = "http://127.0.0.1:8000"  # Replace with your API URL
user = User()

async def run_client():
    # Use async context manager for automatic cleanup
    async with OrderBookClient(user=user, base_url=API_BASE_URL) as client:
        print("Client initialized.")
        # ... use client methods ...

asyncio.run(run_client())

REST API Usage

The client offers async methods for common REST endpoints:

Fetching Data:

# Get Order Book Snapshot for asset index 200
from tplus.model.asset_identifier import AssetIdentifier

example_asset = AssetIdentifier(Index=200)
orderbook = await client.get_orderbook_snapshot(example_asset)
print(f"Snapshot Sequence: {orderbook.sequence_number}")

# Get Klines for an asset
klines = await client.get_klines(example_asset)
print(f"Klines: {klines}")

# Get Market Details for an asset
market_details = await client.get_market(example_asset)
print(f"Market Details: Price Decimals={market_details.book_price_decimals}, Quantity Decimals={market_details.book_quantity_decimals}")

# Get orders for the user
user_orders, _ = await client.get_user_orders()
print(f"User Orders: {user_orders}")

# Get trades for the user and asset
user_asset_trades = await client.get_user_trades_for_asset(example_asset)
print(f"User Asset Trades: {user_asset_trades}")

# Get user inventory
inventory = await client.get_user_inventory()
print(f"Inventory: {inventory}")

Creating Orders:

# Ensure example_asset is defined (e.g., from "Fetching Data" section)
from tplus.model.asset_identifier import AssetIdentifier
example_asset = AssetIdentifier(200)

# Create a Market for an asset (idempotent)
market_creation_response = await client.create_market(asset_id=example_asset)
print(f"Market Creation Response: {market_creation_response}")

# Create a Market Order for a specific asset
market_response = await client.create_market_order(
    asset_id=example_asset,
    quantity=10,  # integer quantity
    side="Buy",
    fill_or_kill=False,
)
print(f"Market Order Response: {market_response}")

# Create a Limit Order for a specific asset
# Good-Till-Cancelled limit order
from tplus.model.limit_order import GTC
limit_response = await client.create_limit_order(
    asset_id=example_asset,
    quantity=5,
    price=1_000,
    side="Sell",
    time_in_force=GTC(),
)
print(f"Limit Order Response: {limit_response}")

# Cancel an Order
# Order ID should be obtained from an order creation response.
order_id_to_cancel = "actual-order-id-from-api"  # Replace with a real order ID
cancel_response = await client.cancel_order(
    order_id=order_id_to_cancel,
    asset_id=example_asset
)
print(f"Cancel Order Response: {cancel_response}")

# Replace an Order
# Original Order ID should be from an existing, open order.
original_order_id_to_replace = "actual-original-order-id"  # Replace with a real order ID
replace_response = await client.replace_order(
    original_order_id=original_order_id_to_replace,
    asset_id=example_asset,
    new_quantity=6, # Optional: New integer quantity
    new_price=1050   # Optional: New integer price
)
print(f"Replace Order Response: {replace_response}")

See examples/rest_usage.py for a runnable demonstration.

WebSocket Streaming

The client provides async iterators to stream real-time data:

from tplus.model.asset_identifier import AssetIdentifier
from tplus.model.orderbook import OrderBookDiff
from tplus.model.trades import Trade

example_asset = AssetIdentifier(200)

# Stream Order Book Diffs
async for diff_update in client.stream_depth(example_asset):
    if isinstance(diff_update, OrderBookDiff):
        print(f"[Depth] Seq={diff_update.sequence_number}, Asks={len(diff_update.asks)}, Bids={len(diff_update.bids)}")
    # Add logic to handle the update, e.g., update a local order book

# Stream Finalized Trades
async for trade in client.stream_finalized_trades():
     if isinstance(trade, Trade):
        print(f"[Trade] ID: {trade.trade_id}, Price: {trade.price}, Qty: {trade.quantity}")
    # Add logic to handle the trade

# Other available streams:
# client.stream_orders() -> OrderEvent
# client.stream_all_trades() -> TradeEvent
# client.stream_klines(asset_id) -> KlineUpdate

See examples/websocket_usage.py for a runnable demonstration using asyncio.gather to run multiple streams concurrently.

Contracts

To interact with the contracts or sign T+ specific EIP-712 messages, ensure you have installed the evm extra:

pip install tpluspy[evm]

Use the tplusp.contracts module to read data from t+ contracts. For example, launch a Sepolia-connected Ape console:

ape console --network ethereum:sepolia:alchemy

Note: You can use any provider you want or a RPC directly, it doesn't have to be Alchemy.

Then, once in the console, you will already have access to contracts that you can call methods on:

In [1]: registry.getAssets()
Out[1]: [getAssets_return(assetAddress=HexBytes('0x000000000000000000000000f08a50178dfcde18524640ea6618a1f965821715'), chainId=11155111, maxDeposits=100)]
In [2]: registry.admin()
Out[2]: '0x467a95fC5359edE5d5dDc4f10A1F4B680694858E'

EIP-712

Sign EIP-712 messages, such as settlements, using the eip712 library.

from ape import accounts, convert, chain
from tplus.evm.eip712 import Order
from tplus.evm.contracts import vault
from tplus.utils.user import UserManager

# Load your Ethereum account for t+.
tplus_user = accounts.load("tplus-account")

# Load your t+ user (public key).
user_id = UserManager.load("my_user").public_key

# Get the nonce from t+ or the contracts directly.
nonce = vault.getDepositNonce(tplus_user)

order = Order(
    tokenOut="0x62622E77D1349Face943C6e7D5c01C61465FE1dc",
    amountOut=convert("1 ether", int),
    tokenIn="0x58372ab62269A52fA636aD7F200d93999595DCAF",
    amountIn=convert("1 ether", int),
    userId=user_id,
    nonce=nonce,
    validUntil=chain.pending_timestamp,
)

# Use this signature for the settlement.
signature = tplus_user.sign_message(order).encode_rsv()
print(signature)