B3 RPC
B3 Overview
B3 is a Layer 2 scaling solution for Ethereum, built on the OP Stack—the same technology that powers Optimism. It uses optimistic rollups to execute transactions off-chain while posting compressed transaction data to Ethereum for settlement security. B3 maintains bytecode-level EVM equivalence, ensuring full compatibility with existing Ethereum applications. Transactions are ordered by sequencers for low-latency block production, while Ethereum ensures security through a fraud-proof challenge period.
B3 is designed for high-performance blockchain infrastructure, delivering fast transaction throughput and low fees. This makes it well-suited for decentralized applications that demand efficient and cost-effective execution.
Interacting with B3's APIs
B3 nodes expose a JSON-RPC interface that is compatible with Ethereum's JSON-RPC API. This means developers can use Ethereum's native tools, such as Foundry, Hardhat, and popular Web3 libraries, without modification.
However, due to B3's architectural differences, some RPC methods may behave differently from those on Ethereum. The Quicknode B3 documentation is continuously evolving as the chain undergoes upgrades and changes, so we highly recommend cross-referencing with the official B3 documentation for the latest updates and RPC differences.
Make B3 API Calls
The quickest way to start building on B3 is to create a Quicknode endpoint and send your first JSON-RPC request.
Quicknode provides managed B3 endpoints, giving you immediate access to the B3 Mainnet without the overhead of running infrastructure. These endpoints offer:
- High reliability – globally distributed infrastructure designed to minimize downtime
- Enhanced performance – optimized latency and request handling for production-grade apps
- Integrated ecosystem – additional functionality through Quicknode add-ons and products like Streams
Visit the QuickStart page to create your endpoint and send your first request.
支援的網路
Quicknode provides access to the following B3 networks:
Complete reference for developers building on B3 with Quicknode:
快速入門
Get started with B3 quickly. Follow our step-by-step quickstart to set up your endpoint and make your first API request.
供應商端點
Learn how to configure and manage your B3 endpoints for optimal performance and reliability.
API 概覽
探索受支援的 API、網路、Quicknode 以及增強的 API 功能，以建構功能強大的應用程式。
附加元件
Discover endpoint add-ons that extend your B3 development workflow.
Endpoint
透過身分驗證、白名單機制及最佳安全實務，確保您的端點安全。
錯誤代碼
Understand common error codes and troubleshooting steps for B3 API requests.