Optimism mainnet RPC with OP Stack support. Scalable Ethereum L2 with governance token and retroactive public goods funding. Build impact-driven decentralized applications.
<35ms
Avg latency
99.95%
Uptime SLA
5
Global regions
50K
Free requests/mo
eth_calleth_getBalanceeth_getLogseth_subscribeoptimism_outputRootFull method list available in the RPC documentation.
import { createPublicClient, http } from 'viem'
import { optimism } from 'viem/chains'
const client = createPublicClient({
chain: optimism,
transport: http('https://rpc.kubernodes.com/optimism?apiKey=YOUR_KEY'),
})
const blockNumber = await client.getBlockNumber()
console.log('Latest block:', blockNumber)Get a free API key with 50,000 requests per month. No credit card required. Upgrade anytime as your project grows.