API Reference

getEmaPriceUnsafe

Get the last updated exponentially weighted moving average (EMA) price object for the requested price feed ID. Caution: This function may return a price arbitrarily in the past

Description

This method returns the price object containing last updated exponentially-weighted moving average(EMA) price for the requested price feed ID.

This function may return a price from arbitrarily far in the past. It is the caller's responsibility to check the returned publishTime to ensure that the update is recent enough for their use case. If you need the latest price, update the price using updatePriceFeeds() and then call getEmaPrice().

The price object contains the following fields:

  1. price: The latest price of the price feed.
  2. conf: The confidence level of the price feed.
  3. expo: The exponent of the price feed.
  4. publishtime: The time when the price feed was last updated.

Sample price object:

{
    price: 123456789n,
    conf: 180726074n,
    expo: -8,
    publishTime: 1721765108n
}

The price above is in the format of price * 10^expo. So, the price in above mentioned sample represents the number 123456789 * 10(-8) = 1.23456789 in this case.

Error Response

The above method can return the following error response:

  • StalePrice: The on-chain price has not been updated within the last getValidTimePeriod() seconds. Try calling updatePriceFeeds() to update the price feed with the latest price.
  • PriceFeedNotFound: The requested price feed has never received a price update or does not exist. Try calling updatePriceFeeds() to update the price feed.

Arguments

import "@pythnetwork/pyth-sdk-solidity/IPyth.sol";
import "@pythnetwork/pyth-sdk-solidity/PythStructs.sol";
// 
address contractAddress = 
IPyth pyth = IPyth(contractAddress);
bytes32 priceId = /* <id> */;
PythStructs.Price memory currentBasePrice = pyth.getEmaPriceUnsafe(priceId);