Public Endpoints

BlockReq provides free public RPC endpoints for every supported network. No registration or API key required — perfect for testing, prototyping, and lightweight dApps.

Available Endpoints

Mainnets

Network	Public URL
Ethereum	`https://eth-mainnet.blockreq.com/v1/rpc/public`
BSC	`https://bsc-mainnet.blockreq.com/v1/rpc/public`
Arbitrum	`https://arb-mainnet.blockreq.com/v1/rpc/public`
Base	`https://base-mainnet.blockreq.com/v1/rpc/public`
Polygon	`https://polygon-mainnet.blockreq.com/v1/rpc/public`

Testnets

Network	Public URL
ETH Sepolia	`https://eth-sepolia.blockreq.com/v1/rpc/public`
ETH Hoodi	`https://eth-hoodi.blockreq.com/v1/rpc/public`
BSC Testnet	`https://bsc-testnet.blockreq.com/v1/rpc/public`
ARB Sepolia	`https://arb-sepolia.blockreq.com/v1/rpc/public`
Base Sepolia	`https://base-sepolia.blockreq.com/v1/rpc/public`
Polygon Amoy	`https://polygon-amoy.blockreq.com/v1/rpc/public`

Beacon Chain

Network	Public URL
ETH Beacon	`https://eth-beacon.blockreq.com/v1/rpc/public`

Rate Limits

Limit	Value
Requests per second	5 per IP address
Daily limit	None
Protocols	HTTPS + WSS

Need higher limits? Create a free account and get 80M RU/month with 100 req/s.

Quick Start

curl

curl -X POST https://eth-mainnet.blockreq.com/v1/rpc/public \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'

JavaScript (ethers.js v6)

import { JsonRpcProvider } from "ethers";

const provider = new JsonRpcProvider("https://eth-mainnet.blockreq.com/v1/rpc/public");
const blockNumber = await provider.getBlockNumber();
console.log("Latest block:", blockNumber);

Python (web3.py)

from web3 import Web3

w3 = Web3(Web3.HTTPProvider("https://eth-mainnet.blockreq.com/v1/rpc/public"))
print("Latest block:", w3.eth.block_number)

viem

import { createPublicClient, http } from "viem";
import { mainnet } from "viem/chains";

const client = createPublicClient({
  chain: mainnet,
  transport: http("https://eth-mainnet.blockreq.com/v1/rpc/public"),
});

const blockNumber = await client.getBlockNumber();
console.log("Latest block:", blockNumber);

Beacon Chain (REST)

# Get node version
curl https://eth-beacon.blockreq.com/v1/rpc/public/eth/v1/node/version

# Get current finality checkpoints
curl https://eth-beacon.blockreq.com/v1/rpc/public/eth/v1/beacon/states/head/finality_checkpoints

Add to MetaMask

You can use the public endpoint as a custom RPC in MetaMask:

Field	Value
Network Name	Ethereum (BlockReq Public)
RPC URL	`https://eth-mainnet.blockreq.com/v1/rpc/public`
Chain ID	1
Currency Symbol	ETH
Explorer	`https://etherscan.io`

Limitations

Rate limited to 5 requests/second per IP — exceeding this returns HTTP 429
No SLA — public endpoints are provided on a best-effort basis
No analytics — usage is not tracked in your dashboard

For production workloads, we recommend creating a private endpoint with higher rate limits and full analytics.