Optimism

The Optimism RPC documentation provides developers with a comprehensive guide to interact with Optimism, a Layer 2 scaling solution for Ethereum. Optimism uses optimistic rollups to achieve low-cost and fast transactions while maintaining the security of the Ethereum mainnet. The documentation includes key API endpoints for querying blockchain data, managing transactions, and interacting with smart contracts. Developers can build scalable decentralized applications (dApps) with enhanced performance and lower transaction costs using Optimism’s RPC gateway.

– Related: 📚 Supported Blockchains • 🌐 RPC Nodes → Optimism • 🔗 Official Optimism Website

RPC Gateway for Optimism blockchain

Optimism RPC networks

▶️ Run in Postman 🚀 Get Started

💎

Optimism Mainnet

🔍 Status 🕵️ Explorer

↳ JSON-RPC

https://optimism-mainnet.gateway.tatum.io

📋 Methods

✨

Optimism Testnet

🔍 Status 🕵️ Explorer

↳ JSON-RPC

https://optimism-testnet.gateway.tatum.io

📋 Methods

Connect to Optimism and Fetch the Latest Block

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

Retrieve Optimism Node Status or Client Version via RPC

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

Test Optimism RPC Methods in Postman

Explore and test Optimism blockchain methods instantly using our pre-configured Postman collection. Perfect for developers who want to experiment with Optimism RPC endpoints, validate API responses, or integrate Optimism into their applications.

Available Optimism interfaces and methods

Each Optimism network and interface below exposes its own set of RPC methods, listed live from Tatum's RPC Gateway. Query these endpoints for any interface to explore what it supports:

• /_methods – machine-readable list of interfaces and methods
• /llms.txt – human- and AI-readable documentation context