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How to Get a Base RPC Endpoint

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

Base has become one of the most active Ethereum Layer 2 networks for DeFi, social apps, and onchain consumer products.

If you're building on Base for the first time or scaling a production application, this guide gets you set up with a reliable RPC endpoint in minutes.

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Step-by-Step: Get Your Base RPC Endpoint

1

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Create a GetBlock Account

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

2

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Create an Avalanche Endpoint

Once logged in:

  1. Click "Shared Nodes" in the left sidebar

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

  1. Select:

    • Protocol: Base

    • Network: Mainnet or Sepolia

    • API Interface: JSON-RPC or Websocket or MEV-Protected(JSON-RPC) or MEV-protected(Websocket)

    • Region: Frankfurt (EU) or Singapore or New York

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

3

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Copy Your Endpoint URL

Your endpoint URL looks like this:

https://go.getblock.io/a1b2c3d4e5f6789012345678abcdef01/
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The long string after go.getblock.io/ is your access token, keep it private.

4

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Test the Connection

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
  }'

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Code Examples

import { JsonRpcProvider, formatEther } from "ethers";

const provider = new JsonRpcProvider(
  "https://go.getblock.io/<YOUR-ACCESS-TOKEN>/"
);

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

const balance = await provider.getBalance("0xYOUR_ADDRESS");
console.log(`Balance: ${formatEther(balance)} ETH`);

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How to Connect MetaMask to Base via GetBlock

  1. MetaMask → Add Network → Add manually

  2. Enter:

    • Network Name: Base Mainnet (GetBlock)

    • RPC URL: https://go.getblock.io/<YOUR-ACCESS-TOKEN>/

    • Chain ID: 8453

    • Symbol: ETH

    • Explorer: https://basescan.org

  3. Save

Base Sepolia Testnet:

  • Chain ID: 84532

  • Explorer: https://sepolia.basescan.org

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Why a Dedicated RPC Provider For Base?

Base inherits Ethereum's security while offering:

  • Low gas fees (~$0.01 per transaction)

  • EVM compatibility — deploy existing Solidity contracts without changes

  • Coinbase ecosystem — seamless fiat on-ramp integration

  • Growing DeFi ecosystem — Aerodrome, Uniswap, Aave, and more

But Base's popularity means public RPC endpoints are frequently congested. A dedicated provider like GetBlock gives you consistent performance with up to 500 RPS and 99.9%+ uptime.

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Base Flashblocks Support

Base introduced Flashblocks — a mechanism for pre-confirmation of transactions at sub-second speeds. GetBlock supports Flashblocks, enabling your application to react to transactions inclusions faster than waiting for full block confirmation.

How to Build a Base Flashblocks Listener →arrow-up-right

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Choosing Your Plan

Use Case
Plan
Why

Building on Base

Free ($0)

50K CU/day, perfect for development

Production dApp

Starter ($49/mo)

50M CU/month, 100 RPS

High-traffic DeFi app

Advanced ($199/mo)

220M CU/month, 300 RPS

Onchain consumer product

Pro ($499/mo)

600M CU/month, 24/7 support

Infrastructure provider

Dedicated (from $1,000/mo)

Unlimited, custom SLA

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What's Next?

Scaling on Base? Contact usarrow-up-right for dedicated infrastructure with custom performance tuning.

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