How to Get an Arbitrum RPC Endpoint

Step-by-step guide to getting a fast, reliable Arbitrum RPC endpoint

Arbitrum One is the leading Ethereum L2 by TVL, hosting major DeFi protocols like GMX, Aave, Uniswap, and Camelot. If you're building on Arbitrum, you need a reliable RPC endpoint that can handle the network's high throughput without rate-limiting your application.

Features

• EVM-compatible — use the same tools as Ethereum (ethers.js, web3.js, Hardhat, Foundry)

• Archive data — full historical state queries

• Trace & Debug — debug_traceTransaction and related methods (Starter+)

• WebSocket — wss://go.getblock.io/<TOKEN>/ for real-time subscriptions

• Multi-region — Frankfurt, New York, Singapore

Arbitrum mainnet Dedicated Nodes may have custom pricing due to higher infrastructure requirements. Contact sales for details.

Step-by-Step: Get Your Arbitrum RPC Endpoint

1

Create a GetBlock Account

Go to GetBlock Dashboard and sign up. You can register with email or via Google/GitHub OAuth.

2

Create a Arbitrum Endpoint

Once logged in:

1. Click "Shared Nodes" in the left sidebar

2. Click "Create New Endpoint" or the "+" button

1. Select:

   • Protocol: Arbitrum

   • Network: Mainnet or Sepolia

   • API Interface: JSON-RPC or Websocket

   • Region: Frankfurt (EU) or New York, USA

   
2. Click "Create": Your endpoint URL will be generated immediately.

3

Copy Your Endpoint URL

Your endpoint URL looks like this:

https://go.getblock.io/a1b2c3d4e5f6789012345678abcdef01/

The long string after go.getblock.io/ is your access token — keep it private.

4

Test the Connection

cURL

curl -X POST https://go.getblock.io/<YOUR-ACCESS-TOKEN>/ \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_chainId","params":[],"id":1}'

Response

Code Sample

Ethers.js

import { JsonRpcProvider } from "ethers";

const provider = new JsonRpcProvider("https://go.getblock.io/<YOUR-ACCESS-TOKEN>/");
const block = await provider.getBlockNumber();
console.log("Latest Arbitrum block:", block);

Python

Viem

Arbitrum Testnets

Network	Chain ID	Purpose
Arbitrum Sepolia	421614	Development & testing

Get testnet ETH from Arbitrum faucets.

Plans

Use Case	Plan	CU	RPS
Development	Free	50K/day	20
Production dApp	Starter ($49/mo)	50M/mo	100
DeFi / DEX	Advanced ($199/mo)	220M/mo	300
High-traffic	Pro ($499/mo)	600M/mo	500
Institutional	Dedicated (custom)	Unlimited	Unlimited

What's Next?

• Full Arbitrum API Reference →

• How to Build a Hyperliquid Whale Tracker Bot →

• Configure a Dedicated Arbitrum Node →

• Learn more about our pricing

Building DeFi on Arbitrum? Talk to us about enterprise-grade infrastructure.