Defender

OpenZeppelin Defender provides a security operations (SecOps) platform for Ethereum with built-in best practices. Development teams implement Defender to ship faster and minimize security risks.

Defender 1.0 is now deprecated in favor of Defender 2.0. Learn how to migrate here! On June 1st 2024, you will no longer have access to Defender 1.0 UI and API.

Get started

Defender is free! Just head over to defender.openzeppelin.com, hit Sign In, and choose to create a new account. After verifying your email address, you will be redirected to your own Defender account. See below for how to invite more users to your team!

Components

Automate your Ethereum operations to deliver high-quality products faster with lower risk to users. Learn more about each component by clicking on its card.

Admin Automate and secure all your smart contract administration.

Relay Build with private and secure transaction infrastructure.

Sentinel Monitor smart contracts and send notifications.

Autotask Create automated scripts to call your smart contracts.

Available networks

All Defender components, where applicable, provide support for the following chains and networks:

Ethereum Mainnet, Holesky testnet and Sepolia testnet.
zkSync Era Mainnet, zkSync Era Goerli and zkSync Era Sepolia.
Polygon (Matic) Mumbai, zkEVM and zkEVM Testnet
Arbitrum One, Arbitrum Nova, Arbitrum Sepolia and Arbitrum Goerli.
Optimism, Optimism Sepolia and Optimism Goerli.
Moonbeam, Moonriver, and Moonbase Alpha (Testnet).
Gnosis Chain and Sokol.
Binance Smart Chain and BSC testnet.
Avalanche C and FUJI C-Chain.
Fuse.
Fantom and Fantom Testnet.
Celo and Alfajores.
Harmony Shard 0 and Harmony Testnet Shard 0.
Aurora and Aurora Testnet.
Hedera and Hedera Testnet.
Base Mainnet, Base Sepolia and Base Goerli.
Linea Mainnet and Linea Goerli.
Scroll Mainnet and Scroll Sepolia.
Mantle Mainnet and Mantle Testnet.
Meld Mainnet and Meld Testnet.

If there is any other network or layer-2 solution you would like to use from Defender, please reach out to us!

Feedback

As a Defender user, your feedback is important! We are committed to making Defender a product that will help you in the secure management of your project, and we cannot do that without your input. Feel free to reach out with questions, feature requests, or issues, either via the Community Forum, Telegram, or at defender@openzeppelin.com. To inquire about enterprise use, click on the link here.