GMO Coin Python Client Library

A Python client library for interacting with the GMO Coin cryptocurrency exchange API.

📘 GMO Coin API Coverage

Usage

Set GMO_API_KEY and GMO_SECRET_KEY in your environment for private API calls.

Public endpoints

from gmocoin_client import Client

client = Client()

status = client.get_status()
ticker = client.get_ticker("BTC")
orderbooks = client.get_orderbooks("BTC")

Private endpoints (with env vars)

from gmocoin_client import Client

with Client.from_env() as client:
    assets = client.get_assets()
    margin = client.get_margin()

Place an order

from gmocoin_client import Client

with Client.from_env() as client:
    order = client.create_order(
        symbol="BTC_JPY",
        side="BUY",
        execution_type="LIMIT",
        time_in_force="FAS",
        price="430001",
        size="0.02",
    )

WebSocket access token

from gmocoin_client import Client

with Client.from_env() as client:
    token = client.ws_auth_create()

Error handling

from gmocoin_client import GmoCoinApiError, Client, GmoCoinHttpError

client = Client()

try:
    client.get_ticker("BTC")
except GmoCoinApiError as exc:
    print(exc)
except GmoCoinHttpError as exc:
    print(exc)

Live trading tests (local-only)

Live tests are excluded by default. To run them locally, opt in and set required environment variables (see .env.example). Tests load .env automatically:

export GMO_LIVE_TESTS=true
export GMO_API_KEY="your_api_key"
export GMO_SECRET_KEY="your_secret_key"
export GMO_LIVE_SYMBOL="BTC"
export GMO_LIVE_SIZE="0.0001"
export GMO_LIVE_BUY_EXECUTION_TYPE="MARKET"
export GMO_LIVE_SELL_EXECUTION_TYPE="MARKET"

Then run:

pytest -m live

Public REST API

Category	Endpoint / Function	Path	Implemented
Exchange status	/public/v1/status	✅
Latest ticker (rate)	/public/v1/ticker	✅
Order book	/public/v1/orderbooks	✅
Trades	/public/v1/trades	✅
K-Line (OHLCV)	/public/v1/klines	✅
Trading rules / symbols	/public/v1/symbols	✅

Private REST API

Category	Endpoint / Function	Path	Implemented
Collateral / margin summary	/private/v1/account/margin	✅
Asset balances	/private/v1/account/assets	✅
Trading volume info	/private/v1/account/tradingVolume	✅
JPY deposit history	/private/v1/account/fiatDeposit/history	✅
JPY withdrawal history	/private/v1/account/fiatWithdrawal/history	✅
Crypto deposit history	/private/v1/account/deposit/history	✅
Crypto withdrawal history	/private/v1/account/withdrawal/history	✅
Query orders	/private/v1/orders	✅
Active orders	/private/v1/activeOrders	✅
Executions	/private/v1/executions	✅
Latest executions	/private/v1/latestExecutions	✅
Open positions	/private/v1/openPositions	✅
Position summary	/private/v1/positionSummary	✅
Internal transfer	/private/v1/account/transfer	✅
Place order	/private/v1/order (POST)	✅
Change order	/private/v1/changeOrder	✅
Cancel order	/private/v1/cancelOrder	✅
Cancel multiple orders	/private/v1/cancelOrders	✅
Cancel bulk orders	/private/v1/cancelBulkOrder	✅
Cancel all orders	/private/v1/cancelAll	❌
Close (settlement) order	/private/v1/closeOrder	✅
Bulk close orders	/private/v1/closeBulkOrder	✅
Change loss-cut price	/private/v1/changeLosscutPrice	✅

Public WebSocket API

Category	Endpoint / Function	Path	Implemented
Subscribe: ticker updates	wss://api.coin.z.com/ws/public (channel=ticker)	❌
Subscribe: order book	wss://api.coin.z.com/ws/public (channel=orderbooks)	❌
Subscribe: trades	wss://api.coin.z.com/ws/public (channel=trades)	❌

Private WebSocket API

Category	Endpoint / Function	Path	Implemented
Obtain access token	/private/v1/ws-auth (POST)	✅
Extend access token	/private/v1/ws-auth (PUT)	✅
Revoke access token	/private/v1/ws-auth (DELETE)	✅
Subscribe: order events	wss://api.coin.z.com/ws/private (channel=orderEvents)	❌
Subscribe: execution events	wss://api.coin.z.com/ws/private (channel=executionEvents)	❌
Subscribe: position events	wss://api.coin.z.com/ws/private (channel=positionEvents)	❌
Subscribe: position summary events	wss://api.coin.z.com/ws/private (channel=positionSummaryEvents)	❌