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Websocket Providers

Overview

Websocket providers utilize websocket APIs / clients to retrieve data from external sources. The data is then transformed into a common format and aggregated across multiple providers. To implement a new provider, please read over the base provider documentation in providers/base/README.md.

Websockets are preferred over REST APIs for real-time data as they only require a single connection to the server, whereas HTTP APIs require a new connection for each request. This makes websockets more efficient for real-time data. Additionally, web sockets typically have lower latency than HTTP APIs, which is important for real-time data.

Supported Providers

The current set of supported providers are:

Note: The URLs provided are endpoints that can be used to determine the set of available currency pairs and their respective symbols. The jq command is used to format the JSON response for readability. Note that some of these may require a VPN to access.

  • Binance - Binance is a cryptocurrency exchange that provides a free API for fetching cryptocurrency data. Binance is a primary data source for the oracle.
    • Check all supported markets:
      • curl https://api.binance.com/api/v3/exchangeInfo | jq
    • Check if a given market is supported:
      • curl https://api.binance.com/api/v3/ticker/price?symbol=BTCUSDT | jq
  • BitFinex - BitFinex is a cryptocurrency exchange that provides a free API for fetching cryptocurrency data. BitFinex is a primary data source for the oracle.
    • Check all supported markets:
      • curl https://api-pub.bitfinex.com/v2/conf/pub:list:currency | jq
    • Check if a given market is supported:
      • curl https://api-pub.bitfinex.com/v2/ticker/t{BTCUSD} | jq
  • Bitstamp - Bitstamp is a cryptocurrency exchange that provides a free API for fetching cryptocurrency data. Bitstamp is a primary data source for the oracle.
    • Check all supported markets:
      • curl https://www.bitstamp.net/api/v2/currencies/ | jq
    • Check if a given market is supported:
      • curl https://www.bitstamp.net/api/v2/ticker/{btcusd}/ | jq
  • ByBit - ByBit is a cryptocurrency exchange that provides a free API for fetching cryptocurrency data. ByBit is a primary data source for the oracle.
    • Check all supported markets:
      • curl https://api.bybit.com/v5/market/tickers?category=spot | jq
      • curl https://api.bybit.com/v5/market/instruments-info | jq
    • Check if a given market is supported:
      • curl https://api.bybit.com/v5/market/tickers?category=spot&symbol={BTCUSDT} | jq
  • Coinbase - Coinbase is a cryptocurrency exchange that provides a free API for fetching cryptocurrency data. Coinbase is a primary data source for the oracle.
    • Check all supported markets:
      • curl https://api.exchange.coinbase.com/currencies | jq
      • curl https://api.exchange.coinbase.com/products | jq
    • Check if a given market is supported:
      • curl https://api.coinbase.com/v2/prices/{DYDX-USDC}/spot | jq
  • Crypto.com - Crypto.com is a cryptocurrency exchange that provides a free API for fetching cryptocurrency data. Crypto.com is a primary data source for the oracle.
    • Check all supported markets:
      • curl https://api.crypto.com/v2/public/get-instruments | jq
      • curl https://api.crypto.com/v2/public/get-ticker | jq
    • Check if a given market is supported:
      • curl https://api.crypto.com/v2/public/get-ticker?instrument_name={BTCUSD-PERP} | jq
  • Gate - Gate.io is a cryptocurrency exchange that provides a free API for fetching cryptocurrency data. Gate.io is a primary data source for the oracle.
    • Check all supported markets:
      • curl https://api.gateio.ws/api/v4/spot/currency_pairs | jq
    • Check if a given market is supported:
      • curl https://api.gateio.ws/api/v4/spot/currency_pairs/{ETH_USDT} | jq
  • Huobi - Huobi is a cryptocurrency exchange that provides a free API for fetching cryptocurrency data. Huobi is a primary data source for the oracle.
    • Check all supported markets:
      • curl https://api.huobi.pro/market/tickers | jq
    • Check if a given market is supported:
      • curl https://api.huobi.pro/market/trade?symbol=ethusdt |jq
  • Kraken - Kraken is a cryptocurrency exchange that provides a free API for fetching cryptocurrency data. Kraken is a primary data source for the oracle.
    • Check all supported markets:
      • curl "https://api.kraken.com/0/public/Assets"
      • curl https://api.kraken.com/0/public/AssetPairs | jq
      • curl "https://api.kraken.com/0/public/Ticker" | jq
    • Check if a given market is supported:
      • curl https://api.kraken.com/0/public/Ticker?pair={XBTUSD} | jq
  • KuCoin - KuCoin is a cryptocurrency exchange that provides a free API for fetching cryptocurrency data. KuCoin is a primary data source for the oracle.
    • Check all supported markets:
      • curl https://api.kucoin.com/api/v1/symbols | jq
      • curl https://api.kucoin.com/api/v3/currencies | jq
      • curl https://api.kucoin.com/api/v1/market/allTickers | jq
    • Check if a given market is supported:
      • curl https://api.kucoin.com/api/v1/market/orderbook/level1?symbol={BTC-USDT} | jq
  • MEXC - MEXC is a cryptocurrency exchange that provides a free API for fetching cryptocurrency data. MEXC is a primary data source for the oracle.
    • Check all supported markets:
      • curl https://www.mexc.com/open/api/v2/market/ticker | jq
      • curl https://www.mexc.com/open/api/v2/market/symbols | jq
      • curl https://api.mexc.com/api/v3/exchangeInfo | jq
    • Check if a given market is supported:
      • curl https://www.mexc.com/open/api/v2/market/ticker?symbol={BTC_USDT} | jq
  • OKX - OKX is a cryptocurrency exchange that provides a free API for fetching cryptocurrency data. OKX is a primary data source for the oracle.

    • Check all supported markets:

      • curl https://www.okx.com/api/v5/market/index-tickers?quoteCcy={USD} | jq

    • Check if a given market is supported:

      • curl https://www.okx.com/api/v5/market/index-tickers?instId={BTC-USDT} | jq