The only B3
provider you’ll ever need

Build on B3 with the fastest RPC Nodes, a comprehensive library of web3 APIs, and the most performant blockchain ETL tools—all backed by enterprise-grade infrastructure.

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Trusted by the best

Battle-tested
infrastructure
for B3 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.

Everything you need to build on B3,
all under one account

2 supported networks

B3 Sepolia Testnet
B3 Mainnet

// 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()

Core RPC API

Reliable & scalable
RPC endpoints

Connect to B3 with one line of code and get unparalleled latency, reliability, and scalability.

Create an Endpoint Learn more

Looking for something dedicated?

Check out clusters

Streaming block data

18% complete

Streaming in progress

Last streamed block: 10343453

Webhook destination

https://quicknode.com/api/webhook

Payload logs

View all logs

10343454
Retry 1 of 3...
10343454
Handshake error
10343454
1 min ago
10343454
1 min ago
10343454
1 min ago

Streams

Blockchain data delivered to you

Stream live and historical B3 data to your application sequentially with guaranteed delivery and flexible filtering.

Learn more

Not yet supported on B3

Functions

Serverless functions for web3 developers

Filter, transform, and enrich blockchain data in real-time with serverless functions, optimized for web3.

Learn more

Not yet supported on B3

Marketplace

Supercharge your dApp with add-on services

Integrate with add-on services and tools to enhance the functionality of your B3 application.

Browse all our add-ons

Featured

Crypto Market Data API

Get real-time, ultra-low latency data from over 350 exchanges with CoinAPI’s Market Data API, designed for seamless integration and robust support for advanced crypto trading and analytics.

Learn more about B3,
and how to get started

Why build on B3?

B3 is a gaming ecosystem, built on Base, that aims to bring the next generation of gamers and game creators on-chain.

B3 is built leveraging the OP Stack, the world's most popular application-specific chain framework.

Launch your own Rollup

Doc

B3 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.

The only B3 provider you’ll ever need