Arbitrum One

Discover Arbitrum One, a Layer 2 scaling solution for Ethereum. Build faster, low-cost decentralized applications using the RPC gateway.

Arbitrum One’s RPC documentation serves as a comprehensive resource for developers looking to integrate with this Layer 2 scaling solution for Ethereum. The documentation outlines the key API endpoints necessary for interacting with the Arbitrum chain, querying blockchain data, managing smart contracts, and submitting transactions. Built on optimistic rollups, Arbitrum One enhances Ethereum’s scalability by offering faster transactions and lower fees. This guide provides examples and best practices to streamline dApp development on Arbitrum One while leveraging Ethereum’s security.

Related: 📚 Supported Blockchains • 🌐 RPC Nodes Arbitrum One • 🔗 Official Arbitrum One Website

Blockchain RPC Gateway for Arbitrum One

Arbitrum One RPC networks

💎 mainnet
https://arb-one-mainnet.gateway.tatum.io
testnet
https://arb-testnet.gateway.tatum.io

Connect to Arbitrum One and Fetch the Latest Block

This widget lets you instantly query the latest block height (or equivalent) for Arbitrum One using a chain-specific RPC method like eth_blockNumber, getblockcount, or getBlockHeight. Useful for connectivity checks, uptime monitoring, or API testing.

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Retrieve Arbitrum One Node Status or Client Version via RPC

Use this pre-configured request to get version or status information for your connected Arbitrum One node. Whether it's web3_clientVersion, getblockchaininfo, or chain-specific endpoints, the method is optimized for each supported blockchain.

Available Arbitrum One interfaces

Arbitrum One - JSON-RPC

Arbitrum One - Tatum API