Introducing MirrorNodeAccountBalanceQuery: The SDK-Native Migration Path for AccountBalanceQuery
Hedera introduced MirrorNodeAccountBalanceQuery as an SDK-native way to read HBAR balances from the Mirror Node REST API without leaving the SDK query flow. The query is available in JavaScript, Java, and Go, and it supports multiple account ID formats while requiring no HBAR payment.
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Developers using the JavaScript, Java, and Go SDKs are the group that can notice this first, because the balance lookup now sits inside the SDK query flow instead of requiring a separate REST call path. That changes how HBAR balance reads are handled in day-to-day use of those SDKs.
What changes in practice is the way an account balance is read: the query is described as the SDK-native replacement for AccountBalanceQuery, and it can work with multiple account ID formats without an HBAR payment. What stays the same is that it is still a read of an account’s HBAR balance from the Mirror Node REST API. (per crypto-economy.com)
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