RPC documentation entries
Explore practical RPC guides for developers, builders, and teams creating reliable Web3 applications and growing blockchain ecosystems with OnFinality.
What is an ETH public RPC and when should you use one?
An ETH public RPC is a shared, unauthenticated JSON-RPC endpoint that lets any developer read Ethereum data and broadcast transactions without running a node. It is ideal for proto...
How do I get the latest Ethereum block with eth_getBlockByNumber?
Learn how to fetch the latest Ethereum block using the eth_getBlockByNumber JSON-RPC method, including curl and ethers.js examples, response fields, and common pitfalls. Compare pu...
Ethereum Sepolia RPC Endpoint: Chain Settings, Setup, and Debugging
Get the Ethereum Sepolia RPC endpoint, chain ID, and network settings for wallets and dApps. Learn how to connect, get test ETH, and debug common RPC issues on this testnet....
What is an Ethereum RPC endpoint and how do you choose the right one?
An Ethereum RPC endpoint is the URL your dapp, wallet, or backend uses to talk to an Ethereum node via JSON-RPC. Public endpoints are free but rate-limited, while managed and dedic...
Ethereum
Solana
Polygon
Base
Arbitrum
BNB Chain
Polkadot
Optimism
