{"id":1604,"date":"2025-08-06T10:35:37","date_gmt":"2025-08-06T10:35:37","guid":{"rendered":"https:\/\/nownodes.io\/blog\/?p=1604"},"modified":"2025-08-06T10:35:38","modified_gmt":"2025-08-06T10:35:38","slug":"public-ethereum-rpc-endpoints-complete-guide","status":"publish","type":"post","link":"https:\/\/nownodes.io\/blog\/public-ethereum-rpc-endpoints-complete-guide\/","title":{"rendered":"Public Ethereum RPC Endpoints: Complete guide"},"content":{"rendered":"\n

If you\u2019re building a dApp, wallet, or any blockchain-based service on Ethereum, you\u2019ve probably encountered the term public Ethereum RPC endpoints. These endpoints are essential for interacting with the Ethereum network, yet many developers overlook their limitations and security concerns. In this article, we\u2019ll break down what they are, how they work, and when you should (or shouldn\u2019t) use them.<\/p>\n\n\n\n

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What Are Public Ethereum RPC Endpoints?<\/strong><\/h3>\n\n\n

Ethereum nodes expose an API called JSON-RPC that allows applications to communicate with the blockchain. This is how wallets, explorers, and dApps query data (like balances, transactions, and block info) or send transactions.<\/p>\n\n\n\n

A public Ethereum RPC endpoint is simply an RPC interface hosted by NOWNodes<\/a> and made publicly accessible to anyone\u2014often for free.<\/p>\n\n\n\n

These services save developers from running their own Ethereum node, which can be expensive and resource-heavy.<\/p>\n\n\n\n

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How Public Ethereum RPC Endpoints Work<\/strong><\/h3>\n\n\n

When you make a request to a public RPC endpoint, your application sends JSON-RPC calls like (for the methods you can use our documentation<\/a>):<\/p>\n\n\n\n

{
  \"jsonrpc\": \"2.0\",
  \"method\": \"eth_blockNumber\",
  \"params\": [],
  \"id\": 1
}
<\/code><\/pre>\n\n\n\n
The RPC provider responds with data directly from the blockchain network. This makes it possible to:<\/p>\n\n\n\n