ssc2ce

A set of simple connectors for access to few cryptocurrency Exchanges via websocket based on aiohttp.

Supported Exchanges:

• Bitfinex - only public API,
• CEX.io,
• Coinbase Pro
• Deribit

This is more of a pilot project, if you have any wishes for adding exchanges or expanding functionality, please register issues.

Installation

Install ssc2ce with:

$ pip install ssc2ce

You can run some examples with

Bitfinex

Description

API description look at Websocket API v2

Basic example

import asyncio

from ssc2ce import Bitfinex

conn = Bitfinex()


def handle_subscription(data, connector: Bitfinex):
    print(data, f"received:{connector.receipt_time}")


async def subscribe():
    await conn.subscribe({
        "channel": "ticker",
        "symbol": "tBTCUSD"
    }, handler=handle_subscription)


conn.on_connect_ws = subscribe

loop = asyncio.get_event_loop()

try:
    loop.run_until_complete(conn.run_receiver())
except KeyboardInterrupt:
    print("Application closed by KeyboardInterrupt.")

Deribit

Description

API description look at Deribit API v2 websocket

Basic example

import asyncio
from ssc2ce import Deribit

conn = Deribit()


async def subscribe():
    await conn.send_public(request={
        "method": "public/subscribe",
        "params": {
            "channels": ["deribit_price_index.btc_usd"]
        }
    })


def handle_subscription(data):
    method = data.get("method")
    if method and method == "subscription":
        if data["params"]["channel"].startswith("deribit_price_index"):
            index_name = data["params"]["data"]["index_name"]
            price = data["params"]["data"]["price"]
            print(f" Deribit Price Index {index_name.upper()}: {price}")


conn.on_connect_ws = subscribe
conn.method_routes += [("subscription", handle_subscription)]

loop = asyncio.get_event_loop()


try:
    loop.run_until_complete(conn.run_receiver())
except KeyboardInterrupt:
    print("Application closed by KeyboardInterrupt.")

Run examples from a clone

If you clone repository you can run examples in docker container.

make run cmd='python examples/bitfinex/bitfinex_basic_example.py'

To run the private.py example, you must create and fill in the .env file, look at .env.example

make run cmd='python examples/deribit/deribit_private.py'