Optimism is a low-cost and lightning-fast Ethereum L2 blockchain
Connect to Optimism in seconds with OnFinality RPC endpoints, request analytics, scalable rate limits, and 99.99% uptime for production Web3 apps.
Optimism is a low-cost and lightning-fast Ethereum L2 blockchain
* The public endpoint is rate limited
ArchiveTrace
Hong KongFranceN.Virginia
Use OnFinality for Optimism RPC endpoints, Optimism API access, and reliable Ethereum L2 infrastructure. OnFinality supports teams looking for dependable Optimism RPC providers, low-cost node hosting options, and scalable endpoints for production dApps.
Fast, stable, scalable Ethereum.
Optimism is a fast, stable, and scalable L2 blockchain built by Ethereum developers, for Ethereum developers. Built as a minimal extension to existing Ethereum software, Optimism’s EVM-equivalent architecture scales your Ethereum apps without surprises. If it works on Ethereum, it works on Optimism at a fraction of the cost.
Optimism goes Superchain
The Superchain project seeks to maximize interoperability and composability between different chains using the OP Stack, and integrate siloed L2s into a single, cohesive layer.
Built for the public good.
Optimism is more than just a blockchain. It's an experiment in sustainable ecosystem funding fueled by protocol revenue. Retroactive Public Goods Funding is simple: you build for the public good, you get paid. Join us on Discord and help build the future of Ethereum, sustainably.
Only pay for what you need.
Public endpoints are useful for quick tests, while authenticated OnFinality endpoints are designed for teams that need clearer limits, request visibility, and a path to higher-capacity infrastructure.
Lightweight testing and simple experiments.
Team projects, backend services, and higher-volume workloads.
Usually shared by many anonymous users.
Authenticated endpoint access through the OnFinality dashboard.
Usually offers limited request visibility.
Request analytics and usage visibility for supported RPC API plans.
May be rate limited or unsuitable for sustained production traffic.
A path from shared RPC APIs to higher-capacity plans or dedicated nodes where supported.
Yes. OnFinality supports Optimism RPC access through managed API endpoints. Developers can use it for production dApps, wallets, DeFi products, analytics tools, games, bots, and backend services without running their own node.
A Optimism RPC endpoint is a network URL that applications use to read blockchain data, submit transactions, and connect backend services to Optimism.
Network environment: mainnet. RPC protocol: EVM JSON-RPC. Transport: HTTP and WebSocket. Advanced access: archive, trace. Common users: production dApps, wallets, DeFi products, analytics tools, games, bots, and backend services. Regions: available through OnFinality infrastructure.
Create or sign in to an OnFinality account, choose Optimism from the supported networks list, create an API endpoint or deploy a dedicated node if the network supports it, test the endpoint with the example method eth_blockNumber, then monitor request usage, errors, and limits before moving critical traffic.
Yes, Optimism RPC can support production applications when the endpoint plan, limits, latency, and monitoring match the workload.
Use private or authenticated Optimism RPC when your team needs stable access, clearer usage limits, request analytics, backend reliability, or support for traffic beyond lightweight testing.
Optimism lists archive and trace capability on this page. Availability can depend on plan and network configuration.
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