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This guide explains OP Stack preinstalls and what it brings to developers. To go to production on a new chain, developers need their core contracts: Gnosis Safes, the 4337 entrypoint, create2deployer, etc. On a blank EVM, these contracts can take weeks to be deployed. Now, core contracts come preinstalled on the OP Stack — no third party deployment necessary. Whether hacking alone or starting the next big rollup, developers can start using their favorite contracts as soon as they spin up their chain. Preinstalls place these core smart contracts at their usual addresses in the L2 genesis state, to ensure that they’re usable as soon as a chain is initialized. With these contracts preinstalled at set addresses, developers can also expect all these contracts to be present at set addresses on the Superchain.
Preinstalls are automatically enabled for all new OP chains after Ecotone.

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Contracts and deployed addresses

This table lists the specific contracts to be pre/deployed for new OP Chains.
ContractDeployed Address for New OP Chains
Safereferencing the artifacts file: 0x69f4D1788e39c87893C980c06EdF4b7f686e2938
SafeL20xfb1bffC9d739B8D520DaF37dF666da4C687191EA
MultiSend0x998739BFdAAdde7C933B942a68053933098f9EDa
MultiSendCallOnly0xA1dabEF33b3B82c7814B6D82A79e50F4AC44102B
Safe Singleton Factory0x914d7Fec6aaC8cd542e72Bca78B30650d45643d7
Multicall30xcA11bde05977b3631167028862bE2a173976CA11
create2Deployer0x13b0D85CcB8bf860b6b79AF3029fCA081AE9beF2
CreateX0xba5Ed099633D3B313e4D5F7bdc1305d3c28ba5Ed
Arachnid’s Deterministic Deployment Proxy0x4e59b44847b379578588920cA78FbF26c0B4956C
Permit20x000000000022D473030F116dDEE9F6B43aC78BA3
ERC-4337 v0.6.0 EntryPoint0x5FF137D4b0FDCD49DcA30c7CF57E578a026d2789
SenderCreator dependency @ 0x7fc98430eAEdbb6070B35B39D798725049088348 on ETH mainnet
ERC-4337 v0.6.0 SenderCreator0x7fc98430eAEdbb6070B35B39D798725049088348
ERC-4337 v0.7.0 EntryPoint0x0000000071727De22E5E9d8BAf0edAc6f37da032
SenderCreator dependency @ 0xEFC2c1444eBCC4Db75e7613d20C6a62fF67A167C on ETH mainnet
ERC-4337 v0.7.0 SenderCreator0xEFC2c1444eBCC4Db75e7613d20C6a62fF67A167C

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Resources and next steps

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