alpaca-backtrader-api
alpaca-backtrader-api
is a python library for the Alpaca trade API
within backtrader
framework.
It allows rapid trading algo development easily, with support for the
both REST and streaming interfaces. For details of each API behavior,
please see the online API document.
Note this module supports only python version 3.5 and above, due to
the underlying library alpaca-trade-api
.
Install
$ pip3 install alpaca-backtrader-api
Example
These examples only work if you have a funded brokerage account or another means of accessing Polygon data.
you can find example strategies in the samples folder.
remember to add you credentials.
you can toggle between backtesting and paper trading by changing ALPACA_PAPER
a strategy looks like this:
In order to call Alpaca's trade API, you need to obtain API key pairs. Replace <key_id> and <secret_key> with what you get from the web console.
import alpaca_backtrader_api
import backtrader as bt
from datetime import datetime
ALPACA_API_KEY = <key_id>
ALPACA_SECRET_KEY = <secret_key>
ALPACA_PAPER = True
class SmaCross(bt.SignalStrategy):
def __init__(self):
sma1, sma2 = bt.ind.SMA(period=10), bt.ind.SMA(period=30)
crossover = bt.ind.CrossOver(sma1, sma2)
self.signal_add(bt.SIGNAL_LONG, crossover)
cerebro = bt.Cerebro()
cerebro.addstrategy(SmaCross)
store = alpaca_backtrader_api.AlpacaStore(
key_id=ALPACA_API_KEY,
secret_key=ALPACA_SECRET_KEY,
paper=ALPACA_PAPER
)
if not ALPACA_PAPER:
broker = store.getbroker() # or just alpaca_backtrader_api.AlpacaBroker()
cerebro.setbroker(broker)
DataFactory = store.getdata # or use alpaca_backtrader_api.AlpacaData
data0 = DataFactory(dataname='AAPL', historical=True, fromdate=datetime(
2015, 1, 1), timeframe=bt.TimeFrame.Days)
cerebro.adddata(data0)
print('Starting Portfolio Value: %.2f' % cerebro.broker.getvalue())
cerebro.run()
print('Final Portfolio Value: %.2f' % cerebro.broker.getvalue())
cerebro.plot()
API Document
The HTTP API document is located in https://docs.alpaca.markets/
Authentication
The Alpaca API requires API key ID and secret key, which you can obtain from the web console after you sign in. You can set them in the AlpacaStore constructor, using 'key_id' and 'secret_key'.
Paper/Live mode
The 'paper' parameter is default to False, which allows live trading. If you set it to True, then you are in the paper trading mode.
Support and Contribution
For technical issues particular to this module, please report the issue on this GitHub repository. Any API issues can be reported through Alpaca's customer support.
New features, as well as bug fixes, by sending pull request is always welcomed.