Welcome to the Optimism Docs

Welcome to the Optimism Docs, the unified home of the Optimism Collective's technical documentation and information about the OP Stack. Information about the Optimism Collective's governance, community, and mission can be found on the Optimism Community Hub (opens in a new tab).

Guides for Builders

Whether you're a developer building a app on OP Mainnet, a node operator running an OP Mainnet node, or a chain operator launching your own OP Stack chain, you'll find everything you need to get started right here.

Featured Tools

Check out these amazing tools, so you can get building with Optimism.

Superchain Faucet

Scaffold-OP

Superchain Dev Console

Open-Source Repo

Fee Parameter Calculator

Learn About Optimism

OP Mainnet is an EVM equivalent (opens in a new tab) Layer 2 blockchain connected to Ethereum. The OP Stack is the standardized, shared, and open-source development stack that makes it easy to spin up your own production-ready Layer 2 blockchain just like OP Mainnet. The Superchain is a network of OP Stack chains that share a bridging protocol, governance system, and more. We've got you covered with these detailed guides to help you learn all about Optimism's tech stack.

About OP Mainnet

About the OP Stack

About the Superchain