Optimism

Explore Optimism, a Layer 2 scaling solution for Ethereum. Build fast and low-cost decentralized applications using its RPC gateway.

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

Blockchain RPC Gateway for Optimism

Optimism RPC networks

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

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.

Get API key For free. No commitment.

Don't have an API key?

Sign up to Dashboard and create your API keys today.
Get higher limits and use debugging tools.

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.

Available Optimism interfaces

Optimism - JSON-RPC

Optimism - Tatum API