// Ethereum

The only Ethereum
provider you’ll ever need

Build on Ethereum with the fastest RPC Nodes, a comprehensive library of web3 APIs, and the most performant blockchain ETL tools—all backed by enterprise-grade infrastructure.

Try free Contact Sales

// Trusted by the best

// Core Products

Battle tested infrastructure
for Ethereum builders

Providing performance and reliability at scale for the world's top businesses and onchain projects. Join them.

400 billion+

API requests handled monthly, we can handle any volume you need.

99.99%

Uptime SLA ensures you're only paying while we're online.

2.5x

Faster API response times than our competitors.

24/7

Access to our support team, Discord community, and docs.

// Build

Everything you need to build on Ethereum,
all under one account

// import the Quicknode SDK

import { Core } from '@quicknode/sdk'

// create a connection to your endpoint

const core = new Core({

endpointUrl: "https://docs-demo.quiknode.pro/",

})

// call the getBlockNumber method

core.client.getBlockNumber()

3 supported networks

Mainnet
Sepolia Testnet
Hoodi Testnet

Reliable & scalable
RPC endpoints

Connect to Ethereum with one line of code and get unparalleled latency, reliability, and scalability.

Try free Learn more

// Build

Learn more about Ethereum,
and how to get started

Why build on Ethereum?

Ethereum is a pioneering smart contract platform that introduced the concept of decentralized applications (dApps). Its robust developer community and extensive tooling make it a prime choice for building versatile and secure dApps.

Get Started

// Chain metrics

Transaction Cost
$3.18142
Transaction Speed

// Webhook Received
Just now
{ "id": 27774258, "eventType": "transfer", "chain": "Ethereum", "timestamp": 1744984842549, "address": "0x57cfd5d72a6a2f72", "amount": "39.697", "token": "AAVE", "timeAgo": "45 min ago" }
// Webhook Received
Just now
{ "id": 27774258, "eventType": "transfer", "chain": "Ethereum", "timestamp": 1744984842549, "address": "0x57cfd5d72a6a2f72", "amount": "39.697", "token": "AAVE", "timeAgo": "45 min ago" }
// Webhook Received
Just now
{ "id": 27774258, "eventType": "transfer", "chain": "Ethereum", "timestamp": 1744984842549, "address": "0x57cfd5d72a6a2f72", "amount": "39.697", "token": "AAVE", "timeAgo": "45 min ago" }

2 supported networks

Mainnet
Sepolia Testnet

Real-time webhooks

No-code webhooks with guaranteed delivery, custom JavaScript logic, and built-in reorg handling.

Create a webhook Learn about webhooksLearn More

Ethererum RPC Docs

Browse our robust documentation for all of our supported chains and learn how to call RPC methods using up-to-date libraries and code examples across Python, Ruby, JavaScript, and cURL.

View

Ethereum Developer Resources

Developer resources to level up your Ethereum game.

View

DeFi Development with Ethereum

In this course, you will build a decentralized exchange (DEX) platform on Ethereum Sepolia.

View

What is Ethereum (ETH)?

In this guide, you will learn what Ethereum is, how it works, and how to use it. Let's get started!

View

Want to stay updated?

Docs

Guides

Want to stay updated?

Docs

Guides

The only Ethereum
provider you’ll ever need

Battle tested infrastructure
for Ethereum builders

400 billion+

99.99%

2.5x

24/7

Everything you need to build on Ethereum,
all under one account

Reliable & scalable
RPC endpoints

Learn more about Ethereum,
and how to get started

Why build on Ethereum?

Real-time webhooks

Historical Backfills

Supercharge your dApp with
add-on services

Blink MEV

At Cielo, we serve over 150,000 users that depend on real-time data. QuickNode is key in making that happen.

Ethererum RPC Docs

Ethereum Developer Resources

DeFi Development with Ethereum

What is Ethereum (ETH)?

Want to stay updated?

Docs

Guides

Want to stay updated?

Docs

Guides

The only Ethereum provider you’ll ever need

Battle tested infrastructure for Ethereum builders

400 billion+

99.99%

2.5x

24/7

Everything you need to build on Ethereum, all under one account

Reliable & scalable RPC endpoints

Learn more about Ethereum, and how to get started

Why build on Ethereum?

Real-time webhooks

Historical Backfills

Supercharge your dApp with add-on services

Blink MEV

At Cielo, we serve over 150,000 users that depend on real-time data. QuickNode is key in making that happen.

Ethererum RPC Docs

Ethereum Developer Resources

DeFi Development with Ethereum

What is Ethereum (ETH)?

The only Ethereum
provider you’ll ever need

Battle tested infrastructure
for Ethereum builders

Everything you need to build on Ethereum,
all under one account

Reliable & scalable
RPC endpoints

Learn more about Ethereum,
and how to get started

Supercharge your dApp with
add-on services