# RPCs and Testnet Stability

An RPC (Remote Procedure Call) allows users to interact with a blockchain by sending requests to remote servers (nodes) for actions like checking account balances, submitting transactions, or querying blockchain data. It simplifies blockchain interactions by enabling commands to be executed on external servers without requiring direct access to the blockchain infrastructure. This functionality powers wallets, decentralized applications, and other blockchain services, ensuring a seamless user experience.

However, testnet networks are often less stable than their mainnet counterparts. As a result, users may experience issues with certain RPC endpoints. To address these issues, refer to the attached guide for detailed steps on how to update your RPC endpoint and restore functionality.

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