Returns the minimum balance required to make the provided account rent exempt.


  • usize: The account data length.
  • object: The configuration object with the following fields:
    • commitment: The level of commitment required for the query. Options include:
      • finalized: The node will query the most recent block confirmed by the supermajority of the cluster as having reached maximum lockout, meaning the cluster has recognized this block as finalized.
      • confirmed: The node will query the most recent block that has been voted on by the supermajority of the cluster.
      • processed: The node will query its most recent block. Note that the block may not be complete.


  • result: The minimum lamports required in an account to remain rent-free, encoded as a 64-bit unsigned integer (u64).
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