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Elixir/Erlang interop for ccxt library
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metachaos-systems/ccxtex
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Ccxtex package provides easy (presently somewhat brittle) Elixir/Erlang interoperability with JS version ofccxt library. Ccxt provides an unified API for querying for historical/recent data and trading operations for multiple cryptocurrency exchanges including GDAX, Bitfinex, Poloniex, Binance and others.
defdepsdo[{:ccxtex,"~> 0.3.0"}]end
You need nodejs (>= 10) installed to run Ccxtex.
Ccxtex is usable, but is under active development. Some exchanges do not support all methods/require CORS/have other esoteric requirements. Please consultccxt documentation for more details.
- fetch_ticker
- fetch_tickers
- fetch_ohlcv
- fetch_exchanges
- fetch_markets
- fetch_trades
- fetch_order_book
- fetch_l2_order_book
- unified public API call option structs
- investigate alternative parallelism/concurrency implementation
- improve general usability of library
Usage:
exchanges = exchanges()
Return value example:
[...%{has: %{ cancel_order: true, cancel_orders: false, cors: false, create_deposit_address: true, create_limit_order: true, create_market_order: false, create_order: true, deposit: false, edit_order: true, fetch_balance: true, fetch_closed_orders: "emulated", fetch_currencies: true, fetch_deposit_address: true, fetch_funding_fees: false, fetch_l2_order_book: true, fetch_markets: true, fetch_my_trades: true, fetch_ohlcv: true, fetch_open_orders: true, fetch_order: "emulated", fetch_order_book: true, fetch_order_books: false, fetch_orders: "emulated", fetch_ticker: true, fetch_tickers: true, fetch_trades: true, fetch_trading_fees: true, private_api: true, public_api: true, withdraw: true},id: "poloniex",timeout: 10000}]fetch_ticker returns a ticker for a given exchange, base and quote symbols, whilefetch_tickers(exchange) will return all tickers for a given exchange
exchange = "bitstamp"base = "ETH"quote = "USD"ticker = fetch_ticker(exchange, base, quote)Return value example:
%Ccxtex.Ticker{ask: 577.35,ask_volume: nil,average: nil,base_volume: 73309.52075575,bid: 576.8,bid_volume: nil,change: nil,close: 577.35,datetime: "2018-05-24T14:06:09.000Z",high: 619.95,info: %{ ask: "577.35", bid: "576.80", high: "619.95", last: "577.35", low: "549.28", open: "578.40", timestamp: "1527170769", volume: "73309.52075575", vwap: "582.86"},last: 577.35,low: 549.28,open: 578.4,percentage: nil,previous_close: nil,quote_volume: 42729187.26769644,pair_symbol: "ETH/USD",timestamp: 1527170769000,vwap: 582.86}Fetches a list of ohlcv data, takes OHLCVS.Opts argument
opts = Ccxtex.OHLCVS.Opts.make!(%{ exchange: "poloniex", base: "ETH", quote: "USDT", timeframe: "1h", since: ~N[2018-01-01T00:00:00], limit: 100 })ohlcvs = fetch_ohlcvs(opts)Return value example:
%Ccxtex.OHLCV{base: "ETH",base_volume: 4234.62695691,close: 731.16,exchange: "bitfinex2",high: 737.07,low: 726,open: 736.77,quote: "USDT",timestamp: ~N[2018-01-01 00:00:00.000]}Fetches markets for a given exchange
Example:
fetch_markets("poloniex")
Response example:
[...%Ccxtex.Market{ active: true, base: "ETH", base_id: "eth", id: "etheur", info: %{ "base_decimals" => 8, "counter_decimals" => 2, "description" => "Ether / Euro", "minimum_order" => "5.0 EUR", "name" => "ETH/EUR", "trading" => "Enabled", "url_symbol" => "etheur" }, limits: %{ "amount" => %{"min" => 1.0e-8}, "cost" => %{"min" => 5}, "price" => %{"min" => 0.01} }, precision: %{"amount" => 8, "price" => 2}, quote: "EUR", quote_id: "eur", symbol: "ETH/EUR", symbol_id: "eth_eur"}...]About
Elixir/Erlang interop for ccxt library
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