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API (HTTP) Providers

Overview

API providers utilize rest APIs 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.

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. Depending on the provider, the markets supported as well as the URL may differ.

  • 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.us/api/v3/ticker/price | jq
      • 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
  • 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/trading-pairs-info/ | jq
    • Check if a given market is supported:
      • curl https://www.bitstamp.net/api/v2/ticker/{btcusd} | 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
  • CoinGecko - CoinGecko is a cryptocurrency data aggregator that provides a free API for fetching cryptocurrency data. CoinGecko is a secondary data source for the oracle. This is not recommended for use in production.
    • Check all supported markets:
      • curl https://api.coingecko.com/api/v3/coins/list | jq
    • Check if a given market is supported:
      • curl https://api.coingecko.com/api/v3/simple/price?ids=bitcoin&vs_currencies=usd | jq
  • dYdX - dYdX is a decentralized exchange built using the Cosmos SDK. dYdX is a market map provider - we use it to fetch the list of markets the side-car should fetch prices for.
  • GeckoTerminal - GeckoTerminal is price provider that aggregates prices of tokens on a variety of blockchains, pools, and decentralized exchanges. To fetch the price of a token, you need to provide the token's address.
  • 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/AssetPairs | jq
    • Check if a given market is supported:
      • curl https://api.kraken.com/0/public/Ticker?pair=ETHUSD | jq
  • Raydium - Raydium is a decentralized exchange on the Solana blockchain. Raydium is a primary data source for the oracle.
  • Uniswap V3 - Uniswap V3 is a decentralized exchange on the Ethereum blockchain. Uniswap V3 is a primary data source for the oracle.