CCXT

One adapter, 100+ crypto exchanges. Binance, Coinbase, Kraken, OKX, Bybit, KuCoin, ...

CCXT is a unified Python client covering 100+ crypto exchanges with a common API shape. The Horizon CcxtVenue wraps one CCXT Exchange instance; instantiate one per exchange you trade.

Connect

python

import horizon as hz

ex = hz.connect("ccxt",
    exchange_id="binance",             # ccxt exchange id
    sandbox=True,                      # testnet where supported
    api_key="...",
    api_secret="...",
)
ex.buy("BTC/USDT", qty=0.001, limit=65_000.0)
print(ex.balance())
ex.close()

Kwargs

Kwarg	Type	Default	Notes
`exchange_id`	`str`	required	`"binance"`, `"coinbase"`, `"kraken"`, `"okx"`, `"bybit"`, `"kucoin"`, …
`api_key`	`str \\| None`	`None`	Falls back to `secrets.get("<exchange_id>.key")`.
`api_secret`	`str \\| None`	`None`	Falls back to `secrets.get("<exchange_id>.secret")`.
`api_passphrase`	`str \\| None`	`None`	Required for Coinbase, OKX, KuCoin, Bitget.
`sandbox`	`bool`	`False`	Enable testnet mode where the exchange supports it.
`options`	`dict \\| None`	`None`	Per-exchange CCXT options (e.g. `{"defaultType": "swap"}`).
`asset_class`	`AssetClass`	`Crypto`	Set to `Perp` when trading perpetuals on the same venue.
`budget_usd`	`float`	`0.0`	Optional hard cap.

Unified symbol format: "BASE/QUOTE" ("BTC/USDT"). CCXT normalizes across exchanges.

Install

bash

pip install horizon[ccxt]
# or
pip install ccxt

Status

Unified REST submit, cancel, amend, balance, positions: shipped.
WebSocket feeds via ccxt.pro (separate commercial license): horizon.data.live.ccxt_ws.
Per-exchange quirks (Binance margin mode, Bybit unified account): surface via options.

Exchange-specific credential conventions, symbol mapping, rate-limit tuning: CCXT (professionals).