Small library/CLI that connects to Kraken exchange websocket API and exposes a simple API for subscribing to tickers and creating custom handlers.

Currently undocumented, but the code should be reasonably readable. See https://docs.kraken.com/websockets/ for documentation on the passed message format (the library just parses the JSON, no other processing is done). When sending, sequentially generated reqid is automatically added to all sent messages.

Also works as a console notifier on Windows 10 - when launched directly, current market rates are shown in console and if a provided threshold is crossed, a toast notification is shown.

Usage: py -m src <CURRENCY_1> <CURRENCY_2> <THRESHOLD> (see run.ps1 for example).

<CURRENCY_1> and CURRENCY_2> are the market pair you want a ticker for (e.g. "XBT" "EUR").

THRESHOLD is the delta from last displayed ask price that must be crossed to show a notification (e.g. if threshold is 1 and last notification was shown when market rate was 500, next notification will be shown when crossing 499 or 501).

• win10toast
• websockets

(see requirements.txt)