Develop Secure Smart Contracts in Solidity

OpenZeppelin Contracts helps you minimize risk by using battle-tested libraries of smart contracts for Ethereum and other EVM blockchains. It includes the most used implementations of ERC standards.

Total value transferred via OpenZeppelin Contracts Explore stats

$38,458,421,214,303

Secure Code

Reduce the risk of vulnerabilities in your applications by using standard, tested, community-reviewed code.

Focused on Security

Using top level standard contracts security patterns and best practices.

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Modular Approach

Simple, robust code. Easy collaboration and auditing.

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Open Source

Community-driven. Used by the biggest players in the industry.

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The world's leading DeFi protocols and financial institutions rely on OpenZeppelin Contracts

Multiple code editor windows displaying Solidity smart contract code with import statements and contract definitions.

Open Source Tools

Secure and automate your Contracts with Relayer and Monitor

Monitor and automate your onchain workflows with OpenZeppelin open source tools.

Explore Tools

Join the OpenZeppelin community

Ask questions, learn about security, and become familiar with smart contract development.

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