maicoin 0.5.0

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maicoin 🪙

Python client for the MaiCoin MAX exchange. Provides a typed REST v3 client and a WebSocket stream client built on httpx, websockets, and pydantic.

📦 Installation

uv add maicoin
# or
pip install maicoin

Requires Python 3.12+.

🚀 Quick start

Set credentials in your environment (or a .env file):

MAX_API_KEY=your_key
MAX_API_SECRET=your_secret

🌐 REST

from maicoin.v3 import Client

client = Client()                  # public endpoints
client = Client(api_key=..., api_secret=...)  # private endpoints (signed)

client.ticker("btctwd")
client.accounts()
client.request("GET", "/api/v3/...", auth=True)  # raw escape hatch

[!WARNING] ⚠️ Private methods can place orders, transfer funds, take loans, and trigger withdrawals. Double-check arguments before calling state-changing methods against a live account.

📡 WebSocket

from maicoin.ws import Channel, Stream, Subscription

stream = Stream()                  # or Stream.from_env() for private channels
stream.subscribe([Subscription(channel=Channel.TICKER, market="btcusdt")])
stream.add_handler(lambda r: print(r.model_dump(exclude_none=True)))
stream.run()

Full runnable scripts: examples/rest.py, examples/websocket.py.

🛠️ Development

This repo uses uv and just:

uv sync
just         # format, lint, type-check, test
just test    # pytest with coverage

Live integration tests

Live tests call the real MAX API and are skipped unless explicitly enabled:

RUN_LIVE_TESTS=1 uv run pytest -v -s -m live tests/live
# or
just live-test

Private read-only live tests also require MAX_API_KEY and MAX_API_SECRET; just loads these from .env automatically. Set MAX_LIVE_MARKET to override the default public test market (btctwd). Destructive live tests are intentionally not implemented yet.

📚 References

• HTTP API v3: https://max-api.maicoin.com/doc/v3.html
• WebSocket API: https://maicoin.github.io/max-websocket-docs/

📄 License

MIT