Ethereum RPC Endpoint
Free Ethereum mainnet RPC endpoint. No API key required for public access. Full JSON-RPC 2.0 support with automatic failover across multi-region nodes.
Connect to Ethereum mainnet over HTTPS. Full JSON-RPC 2.0 compatibility with all standard eth_ methods.
Endpoint URL
https://rpc.nodeflare.app/eth/v1/{YOUR_KEY}Public endpoint (no API key)
https://rpc.nodeflare.app/eth/publicNo API key required. Rate-limited to 2 req/s per IP. Heavy methods (eth_getLogs, trace_*, debug_*) are restricted — sign up for a free key to unlock them.
Quick Test
Terminal
curl https://rpc.nodeflare.app/eth/v1/YOUR_KEY \
-X POST \
-H "Content-Type: application/json" \
-d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'Supported Methods
| Category | Methods |
|---|---|
| Chain | eth_chainId → 1, net_version, web3_clientVersion |
| Blocks | eth_blockNumber, eth_getBlockByHash, eth_getBlockByNumber |
| Transactions | eth_sendRawTransaction, eth_getTransactionByHash, eth_getTransactionReceipt, eth_getTransactionCount |
| State | eth_getBalance, eth_getCode, eth_getStorageAt, eth_call |
| Gas | eth_gasPrice, eth_estimateGas, eth_maxPriorityFeePerGas, eth_feeHistory |
| Logs | eth_getLogs, eth_newFilter, eth_getFilterLogs, eth_uninstallFilter |
| Debug | debug_traceTransaction, debug_traceBlockByNumber |
WebSocket
Connect over WebSocket for real-time subscriptions (eth_subscribe) and persistent connections.
Authenticated
wss://rpc.nodeflare.app/eth/ws/v1/{YOUR_KEY}Public (no API key, 2 req/s)
wss://rpc.nodeflare.app/eth/ws/publicJavaScript
const ws = new WebSocket("wss://rpc.nodeflare.app/eth/ws/v1/YOUR_KEY");
ws.onopen = () => ws.send(JSON.stringify({
jsonrpc: "2.0", id: 1, method: "eth_subscribe", params: ["newHeads"]
}));
ws.onmessage = (e) => console.log(JSON.parse(e.data));Chain Info
| Property | Value |
|---|---|
| Chain ID | 1 |
| Native token | ETH |
| Block time | ~12 seconds |
| Consensus | Proof of Stake |
ℹ
Archive data (full historical state) is available on all plans.