🎉 We are deprecating the Optimism SDK and migrating all tutorials to use viem/op-stack. Read more →

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BUILDERS
Notices (README)
App developers
Chain operators
Node operators
Wallets & CEXs
- Guide for exchanges
- Guide for wallets
Developer tools
OP MAINNET
Getting started: OP Mainnet
Differences between Ethereum and OP Mainnet
Networks and RPC Endpoints
Contract addresses
Bridged token addresses
Identity
Testing
- Running a local development environment
- Testing apps on OP Mainnet
Security
OP STACK
Getting started: OP Stack
Differences between Ethereum and OP Stack chains
Superchain explainer
Design philosophy & principles
OP Stack components
Smart contracts
Transactions
- SendRawTransactionConditional
Security
- Security FAQs
- Pause and unpause the Bridge
Experimental
OP Contracts Manager
- Custom gas token
- Alt-DA Mode
- Block time research
CONNECT
Contribute
Resources
- Changelog (opens in a new tab)
- Glossary
Get Launch Support (opens in a new tab)
Optimism Governance (opens in a new tab)

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OP Documentation