Free Ethereum RPC Endpoint
Chain ID 1 · ETH · multiple configured routing regions
Ethereum Mainnet (Chain ID 1) is the leading smart-contract platform. NodeFlare provides Ethereum JSON-RPC for contract reads, event logs and transaction submission from its own primary nodes with regional failover. Tracing support depends on the method and node; plan and method limits apply.
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 |
A wallet polls its RPC continuously. The keyless URL above allows 1 request per 10 seconds per IP: enough to confirm the network details, too low for daily wallet use. For a wallet, enter your keyed URL https://rpc.nodeflare.app/eth/v1/{YOUR_KEY} instead. A free key allows 10 requests per second, and the dashboard adds Ethereum to MetaMask with that URL in one click. Get a free key →
Built for Ethereum
DeFi protocols, wallets, indexers, and bots that need reliable, low-latency Ethereum reads and writes. Requests use configured regional preferences and available upstreams. Plan rate limits, compute units and method-specific concurrency limits apply.
Ethereum node coverage and routing
NodeFlare-operated primary nodes in 2 configured routing regions. A public third-party RPC backstop is configured after our own nodes. Region labels describe routing configuration rather than a guarantee that every gateway has a local node. A standard API key uses shared infrastructure with its own plan limits; dedicated capacity is scoped separately. Historical state, tracing and WebSocket support vary by chain and node.
On successful HTTP RPC responses, nf-region: fallback identifies an external backstop and nf-region: cache identifies a cached response. See our routing disclosure and availability terms.
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; Chain ID: 1; Currency symbol: ETH; Block explorer URL: https://etherscan.io; New RPC URL: your keyed NodeFlare URL, https://rpc.nodeflare.app/eth/v1/{YOUR_KEY}. A free key allows 10 requests per second. The keyless URL https://rpc.nodeflare.app/eth/public answers a test call, but it allows 1 request per 10 seconds per IP, which is too low for a wallet that polls the network continuously.
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 provides higher rate limits and 3,000,000 compute units per month, no credit card. Heavy HTTP methods depend on node support and are subject to compute-unit and concurrency limits.
What are the Ethereum RPC rate limits?
The public endpoint is limited to 1 request per 10 seconds per IP. A free key gives 10 requests/second; standard paid plans scale to 1500 req/s. Every plan includes all 17 supported chains.
Is NodeFlare a good Ethereum RPC provider?
NodeFlare operates its own primary Ethereum nodes. NodeFlare-operated primary nodes in 2 configured routing regions. A public third-party RPC backstop is configured after our own nodes. A free key provides 3,000,000 CU per month and higher limits. Method support and historical coverage depend on the node and requested block.
Is there a dedicated Ethereum RPC node?
A standard key gives an authenticated endpoint on shared NodeFlare infrastructure, with plan-specific limits. Dedicated capacity is scoped separately by inquiry. NodeFlare-operated primary nodes in 2 configured routing regions. A public third-party RPC backstop is configured after our own nodes. Historical state and traces must be checked for your specific methods and block ranges; a key does not guarantee complete archive coverage.
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
- Compare Ethereum gas prices → — live gas price and transaction cost next to the other chains, and a free token approval checker →
- Onchain tools for AI agents → — token-safety, wallet intelligence and RPC over MCP / x402
Build on Ethereum with a free key
Higher limits and an authenticated endpoint — every supported 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.