> ## Documentation Index
> Fetch the complete documentation index at: https://protochain.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# RPC Client Service

> Query low-level Solana RPC data — currently provides rent exemption calculation.

The RPC Client Service proxies Solana RPC queries that don't map cleanly to any other Protochain service. Currently provides one method for rent exemption calculation, which is a prerequisite for creating accounts with the System Program.

## Methods

| Method                                                                                                | Description                                                                   | Page                                                                     |
| ----------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------- | ------------------------------------------------------------------------ |
| [GetMinimumBalanceForRentExemption](/api-reference/rpc-client/get-minimum-balance-for-rent-exemption) | Calculate the minimum lamport balance for a rent-exempt account of given size | [View](/api-reference/rpc-client/get-minimum-balance-for-rent-exemption) |