Arbitrum RPC
What is Arbitrum?
Arbitrum is a Layer 2 scaling solution for Ethereum that uses optimistic rollup technology to reduce transaction costs and increase throughput while maintaining Ethereum's security. Built by Offchain Labs, Arbitrum processes transactions off-chain and submits compressed batches to Ethereum mainnet, achieving up to 90% lower gas fees and faster confirmation times.
Arbitrum operates using an optimistic execution model. It assumes transactions are valid by default but includes a 7-day challenge period where validators can dispute fraudulent transactions through an interactive fraud-proof system. This design allows Arbitrum to inherit Ethereum's security guarantees while providing a fully EVM-compatible environment where existing Solidity smart contracts and dApps can deploy without modification.
The network uses ArbOS, a custom operating system that manages the execution environment and handles cross-chain messaging through its retryable tickets system, enabling communication between L1 and L2.
Interacting with Arbitrum
The Arbitrum JSON-RPC API extends the standard Ethereum JSON-RPC interface with Layer 2-specific functionality. Since Arbitrum maintains byte-level EVM compatibility, developers can use familiar tools like Ethers.js and Foundry without modification.
With this API, you can:
- Execute all standard Ethereum JSON-RPC methods (eth_call, eth_sendTransaction, etc.)
- Access Arbitrum-specific methods for L2 operations (arbtrace_block, arbtrace_replayTransaction)
- Subscribe to real-time events via WebSocket connections
You can access the API by:
- Running a local Arbitrum node (Nitro client)
- Using a hosted provider such as a Quicknode Arbitrum endpoint, which provides instant access to both Arbitrum One and Arbitrum Nova networks with built-in reliability and archive data support
対応ネットワーク
Quicknode provides access to the following Arbitrum networks:
Complete reference for developers building on Arbitrum with Quicknode:
クイックスタート
Get started with Arbitrum quickly. Follow our step-by-step quickstart to set up your endpoint and make your first API request.
プロバイダーのエンドポイント
Learn how to configure and manage your Arbitrum endpoints for optimal performance and reliability.
APIの概要
強力なアプリケーションを構築するために、サポートされているAPI、ネットワーク、Quicknode製品、および強化されたAPI機能についてご覧ください。
マーケットプレイス
Quicknode Marketplaceの強力なアドオンやツールを見つけて導入し、Web3アプリケーションを強化しましょう。
エンドポイントセキュリティ
認証、ホワイトリスト、およびセキュリティのベストプラクティスを活用して、エンドポイントを保護しましょう。
エラーコード
Understand common error codes and troubleshooting steps for Arbitrum API requests.