Free Ethereum RPC Endpoint
Chain ID 1 · ETH · multi-region with automatic failover
Ethereum Mainnet (Chain ID 1) is the leading smart-contract platform. NodeFlare serves the full JSON-RPC 2.0 surface — eth_call, eth_getLogs, eth_sendRawTransaction, and debug/trace methods — from bare-metal nodes across multiple regions with automatic failover.
Public endpoint — no API key
HTTPS
https://rpc.nodeflare.app/eth/publicWSS
wss://rpc.nodeflare.app/eth/ws/publicNeed higher limits? Use a keyed endpoint https://rpc.nodeflare.app/eth/v1/{YOUR_KEY} — get a free key →
Connect to Ethereum
curl -s -X POST https://rpc.nodeflare.app/eth/public \
-H 'content-type: application/json' \
-d '{"jsonrpc":"2.0","id":1,"method":"eth_blockNumber","params":[]}'import { ethers } from "ethers";
const provider = new ethers.JsonRpcProvider(
"https://rpc.nodeflare.app/eth/public"
);
const block = await provider.getBlockNumber();import { createPublicClient, http } from "viem";
const client = createPublicClient({
transport: http("https://rpc.nodeflare.app/eth/public"),
});
const block = await client.getBlockNumber();from web3 import Web3
w3 = Web3(Web3.HTTPProvider(
"https://rpc.nodeflare.app/eth/public"
))
print(w3.eth.block_number)Add Ethereum to your wallet
Network details for MetaMask, Rabby, or any EVM wallet — Ethereum chain ID 1 (0x1).
| Network name | Ethereum |
| RPC URL | https://rpc.nodeflare.app/eth/public |
| Chain ID | 1 |
| Currency symbol | ETH |
| Block explorer | https://etherscan.io |
Built for Ethereum
DeFi protocols, wallets, indexers, and bots that need reliable, low-latency Ethereum reads and writes. Every request routes to the nearest healthy node, with automatic failover and no per-request throttling — the gaps public endpoints leave.
Low-latency Ethereum RPC — 2 regions, geo-routed
We run our own bare-metal Ethereum nodes in 2 regions across US-East, US-West, EU and Asia — not a reseller of Alchemy or Infura. Every request is geo-routed to the region you call from: the gateway reads the Cloudflare edge location and picks the nearest healthy node, with automatic failover. A trading bot in Singapore hits our Singapore Ethereum node, not one in the US — real round-trip time saved on your hot path.
Ethereum RPC — FAQ
What is Ethereum's chain ID?
Ethereum's chain ID is 1 (hex 0x1). Its native currency is ETH and its block explorer is etherscan.io. You can connect with NodeFlare's free public RPC at https://rpc.nodeflare.app/eth/public — no API key required.
How do I add Ethereum to MetaMask?
In MetaMask, open the network menu → "Add a network" → "Add a network manually", then enter — Network name: Ethereum; New RPC URL: https://rpc.nodeflare.app/eth/public; Chain ID: 1; Currency symbol: ETH; Block explorer URL: https://etherscan.io. Save, then switch to Ethereum. The endpoint is free and needs no account.
What is the Ethereum RPC URL?
NodeFlare's public Ethereum RPC URL is https://rpc.nodeflare.app/eth/public over HTTPS and wss://rpc.nodeflare.app/eth/ws/public over WSS. No API key is required for the public endpoint.
Is the Ethereum RPC free?
Yes. The public Ethereum endpoint is free with no sign-up. A free API key unlocks higher rate limits, heavy methods, and a dedicated path — 2,000,000 compute units per month, no credit card.
What are the Ethereum RPC rate limits?
The public endpoint is limited to 2 requests/second per IP. A free key gives 10 requests/second; paid plans scale to 500 req/s. Every plan includes all 22 supported chains.
Is NodeFlare a good Ethereum RPC provider?
NodeFlare is an independent Ethereum RPC provider that runs its own nodes — not a reseller or aggregator of third-party backends. The public endpoint is free with no sign-up; a free API key adds higher rate limits, WebSocket, and heavy methods (eth_getLogs, trace_*, debug_*) — 2,000,000 compute units per month, no credit card.
Is there a dedicated Ethereum RPC node?
Yes. NodeFlare runs its own dedicated Ethereum node(s), and every request is routed to the nearest healthy node with automatic failover. A free or paid key gives you a dedicated endpoint path with your own rate limits and full access to archive methods like eth_getLogs and debug_traceTransaction.
Go deeper
- Full Ethereum API reference → — supported methods, WebSocket, regions
- Rate limits & compute-unit costs → — what each method costs against your quota
- Pay per request with x402 → — Ethereum calls in USDC from $0.001, no account:
POST /eth/x402 - RPC for trading bots → and indexers → — low-latency, eth_getLogs-heavy workloads
- Screen a Ethereum token for scams → — ownership, honeypot check, holder concentration → one risk score
- Onchain tools for AI agents → — token-safety, wallet intelligence and RPC over MCP / x402
Build on Ethereum with a free key
Higher limits, a dedicated path, and automatic failover — every chain included. No credit card.
Get your free API key →Ethereum RPC methods
Per-method docs for Ethereum — parameters, compute-unit cost, and copy-paste examples.