Crypto.com websocket api client

This is a low level api client, it just connects the exchange api with your python code in the most simple way. Over this library, you can build your awesome applications or high level api. For more information, check the library documentation, the official documentation and the examples directory.

Features

This library is optimized to be small, fast and secure.

• Fully tested: 100% code coverage
• Simple: It just does one thing, but it does it right
• Fast: Relies on asyncio so latency and memory usage is near zero (much better than threading or multiprocessing)
• No forced dependencies: Just websockets and orjson. No super modern cool features that you probably don't want

Getting started

There are two kinds of apis, the user and market. The user type requires providing api credentials (access and secret key)

Before using the library, you have to install it:

pip install crypto_com_client

The most simple example, subscribing to an orderbook:

from crypto_com.crypto_com import MarketClient
import asyncio
import logging

logging.basicConfig(level=logging.INFO)

async def run():
    async with MarketClient() as client:
        await client.subscribe(["book.CRO_USDC.10"])
        while True:
            event = await client.next_event()
            print(event)


if __name__ == "__main__":
    loop = asyncio.get_event_loop()
    loop.run_until_complete(run())

If you want to use the user api first get you api key and secret.

from crypto_com import UserClient
import asyncio
import os
import logging

logging.basicConfig(level=logging.INFO)

async def run():
    async with UserClient(
            api_key=os.environ["API_KEY"],
            api_secret=os.environ["API_SECRET"]
    ) as client:
        await client.send(
            client.build_message(
                method="private/get-open-orders",
                params={
                    "instrument_name": "CRO_USDC",
                    "page_size": 10,
                    "page": 0
                }
            )
        )
        event = await client.next_event()
        print(event)


if __name__ == "__main__":
    loop = asyncio.get_event_loop()
    loop.run_until_complete(run())

With these two examples you can use the whole api. Just check the API documentation to know the different methods and parameters.

Contributing

If you have any suggestion, detect any bug or want any feature, please open an issue so we can discuss it.

Tests

To run the tests just run tox

It will run in first instance flake8, then pylint and finally pytest with code coverage check. The only rule ignored is max-line-length=120 basically because nowadays monitors are big enough for this. Websockets import has E0611 disabled because pylint does not process __all__ correctly