Build Securely on Starknet
with OpenZeppelin

OpenZeppelin provides secure smart contracts libraries for Cairo, Starknet’s native smart contract language. Built for scalability and powered by zero-knowledge proofs, Cairo enables developers to create high-performance DeFi, NFT, and gaming applications that inherit Ethereum security.

OpenZeppelin Cairo Contracts

Audited smart contracts libraries and utilities for Cairo, including implementations of familiar standards such as ERC-20 and ERC-721. With these, developers can accelerate deployment, reduce risk, and build confidently on Starknet.

Docs → Github →

More than

$250 million

Total Value Locked in OpenZeppelin Cairo Contracts on Starknet

More than

410 million

Transactions executed with OpenZeppelin Cairo Contracts on Starknet

Contracts Wizard

Generate secure Cairo contracts quickly and safely. Configure modules, preview the code, and integrate directly into your workflow.

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Contracts MCP

Integrate OpenZeppelin Cairo contracts with AI-assisted workflows. Generate and deploy secure contracts using proven standards, guided by machine copilots.

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Security Services

Smart Contract Security Audit

Secure your Starknet applications with comprehensive Cairo contract audits that ensure resilience across DeFi, gaming, and tokenization protocols built on zero-knowledge technology.

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Blockchain Infrastructure Audit

Strengthen your Starknet infrastructure through specialized audits of sequencer implementations, ZK prover systems, and bridge protocols, ensuring secure zero-knowledge execution at scale.

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