---
title: Real-Time Price Updates in Off-Chain Apps with Hermes-Client
description: >-
  Harness hermes-client to retrieve real-time prices and subscribe to live
  updates in your off-chain applications. (Note: price-service-sdk is
  deprecated.)
full: false
index: false
---

# How to Use Real-Time Data in Off-Chain Applications

This guide explains how to fetch the latest prices and subscribe to real-time price updates in off-chain applications.

<InfoBox variant="info">
  <div>[`price-service-sdk`](https://github.com/pyth-network/pyth-crosschain/tree/main/price_service/client/js) was is deprecated and replaced by the [`hermes-client`](https://github.com/pyth-network/pyth-crosschain/tree/main/apps/hermes/client/js).
  It can be used for fetching prices for off-chain applications as well as fetching price updates.</div>

  <div>Please refer to the [fetch-price-updates](../fetch-price-updates) guide for the details.</div>
</InfoBox>
