Securely Code, Deploy and Operate your Smart Contracts

Ship faster and more safely with Defender Cloud Services.
From testnet to mainnet, at any scale.

Trusted by the world’s leading projects

Uniswap
ANZ
Coinbase
AAVE
Compound
Ethereum Foundation
Lens Protocol
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Uniswap
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Coinbase-1
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Ethereum Foundation-1
Lens Protocol
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Uniswap
ANZ-Logo-2009 1-1
Coinbase-1
aaveLogoWhite 1-1
Group-2
Ethereum Foundation-1
Lens Protocol
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Code

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Battle-tested Contracts

Develop using security best practices, community-vetted libraries, and the most commonly adopted ERC standards.

Explore Contracts Library
Contract (1)
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Security on every Pull Request

Automatic code analysis for differences, vulnerabilities, improvements, gas costs, and test runs. Powered by machine learning intelligence and state-of-the-art tools.

Scan your project
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Deploy

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Top Window Code image
config.js deploy.js
// hardhat-config.js
require('@openzeppelin/hardhat-upgrades');
require('dotenv').config();
  
module.exports = {
    defender: {
        apiKey: process.env.API_KEY,
        apiSecret: process.env.API_SECRET,
    }
}
 import { ethers, defender } from "hardhat";
    
 async function main() {
    const Box = await ethers.getContractFactory("Box");
    const deployment = await defender.deployProxy(Box);
    await deployment.waitForDeployment();
    console.log(`Contract deployed at ${deployment.getAddress()}`);
 }   
           

Transact, Monitor, and Automate

Relayers

Send onchain transactions with ease via dashboard UI, API, or SDK. Automate signing and approvals in compliance with your policies. Defender does the heavy lifting of monitoring the transaction lifecycle, optimizing gas fees, repricing, and resubmissions.

Send a transaction
Relayers
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Monitor

Gain full visibility into your smart contracts' risks and behaviors. Detect threats, get alerts on threats and anomalies, and automatically respond and resolve issues.

Monitor your contacts
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Extend the Defender platform with custom code

Use Actions to implement custom app logic for on-chain and off-chain operations. Enable automated response to threats detected by OpenZeppelin's Monitor.

Create your first Action
Actions

+30 networks supported

Ethereum, Polygon, Arbitrum, Optimism, ZKSync, Moonbeam, and many more

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Native integrations with your favorite tools

Defender seamlessly integrates with your existing tools and workflows, so you can easily operate and secure your project throughout the whole development lifecycle

Explore all integrations
Flashbots Fireblocks Safe
Key Management and Transaction Executions

Flashbots, Fireblocks, Safe

Forta Etherscan Blockscout
Transaction Data and Threat Detection

Forta, Etherscan, Blockscout

Notification and Logging

Slack, Datadog, PagerDuty, Opsgenie, Telegram, Discord

Hardhat Foundry Github
Source Code and SDK Plugins

Hardhat, Foundry, GitHub

Enterprise-grade security and compliance for institutional adoption

SOC2, CCPA & GDPR

Built as the result of 8 years developing and auditing the world’s most popular smart contracts

50M+

Transactions processed via Defender relayers in 2023

10M+

Issues detected
by Code Inspector

3K+

Deployed contracts

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