@pythnetwork/client

pyth-client

A library for parsing on-chain Pyth oracle data

Pyth is building a way to deliver a decentralized, cross-chain market of verifiable data from high-quality nodes to any smart contract, anywhere.

This library consumes on-chain Pyth accountInfo.data from @solana/web3.js and returns JavaScript-friendly objects.

See our examples repo for real-world usage examples.

Example Usage

import { Connection, PublicKey } from '@solana/web3.js'
import { parseMappingData, parsePriceData, parseProductData } from '@pythnetwork/pyth-client'
const connection = new Connection(SOLANA_CLUSTER_URL)
  const publicKey = new PublicKey(ORACLE_MAPPING_PUBLIC_KEY)
  connection.getAccountInfo(publicKey).then((accountInfo) => {
    const { productAccountKeys } = parseMappingData(accountInfo.data)
    connection.getAccountInfo(productAccountKeys[productAccountKeys.length - 1]).then((accountInfo) => {
      const { product, priceAccountKey } = parseProductData(accountInfo.data)
      connection.getAccountInfo(priceAccountKey).then((accountInfo) => {
        const { price, confidence } = parsePriceData(accountInfo.data)
        console.log(`${product.symbol}: $${price} \xB1$${confidence}`)
        // SRM/USD: $8.68725 ±$0.0131
      })
    })
  })

To get streaming price updates, you may want to use connection.onAccountChange

Changelog

1.0.0

Initial release