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OpenZeppelin Docs

Security-first libraries, tools, and infrastructure for building on Ethereum and other blockchains. Covers smart contract libraries for Solidity, Cairo, Stylus, Sui, Midnight, Stellar, Zama FHEVM, and Polkadot; operational tools (Monitor, Relayer, UI Builder); and the Upgrades Plugins and Contract Wizard.

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For agents: OpenZeppelin docs for security-audited smart contract libraries (Solidity, Cairo, Stylus, Sui and more), upgrades plugins, Contracts Wizard and operational tool

smart contracts solidity ethereum erc-20 account abstraction

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# OpenZeppelin Docs

> Security-first libraries, tools, and infrastructure for building on Ethereum and other blockchains. Covers smart contract libraries for Solidity, Cairo, Stylus, Sui, Midnight, Stellar, Zama FHEVM, and Polkadot; operational tools (Monitor, Relayer, UI Builder); and the Upgrades Plugins and Contract Wizard.

Each ecosystem section lists the smart-contract libraries and language-specific guides for that chain. Cross-ecosystem developer libraries and tools are grouped at the end to avoid duplication. Unversioned URLs (for example `/contracts/`) redirect to the latest supported version.

## Ethereum & EVM

- [Getting Started](https://docs.openzeppelin.com/contracts)

### Solidity Contracts

- [OpenZeppelin Contracts — Overview](https://docs.openzeppelin.com/contracts/5.x)
- [OpenZeppelin Contracts — Contracts Wizard](https://docs.openzeppelin.com/contracts/5.x/wizard)
- [OpenZeppelin Contracts — Extending Contracts](https://docs.openzeppelin.com/contracts/5.x/extending-contracts)
- [OpenZeppelin Contracts — Using with Upgrades](https://docs.openzeppelin.com/contracts/5.x/upgradeable)
- [OpenZeppelin Contracts — Backwards Compatibility](https://docs.openzeppelin.com/contracts/5.x/backwards-compatibility)
- [OpenZeppelin Contracts — Access Control](https://docs.openzeppelin.com/contracts/5.x/access-control)
- [OpenZeppelin Contracts — Account Abstraction — Overview](https://docs.openzeppelin.com/contracts/5.x/account-abstraction)
- [OpenZeppelin Contracts — Account Abstraction — Accounts — Overview](https://docs.openzeppelin.com/contracts/5.x/accounts)
- [OpenZeppelin Contracts — Account Abstraction — Accounts — EOA Delegation](https://docs.openzeppelin.com/contracts/5.x/eoa-delegation)
- [OpenZeppelin Contracts — Account Abstraction — Accounts — Multisig](https://docs.openzeppelin.com/contracts/5.x/multisig)
- [OpenZeppelin Contracts — Tokens — Overview](https://docs.openzeppelin.com/contracts/5.x/tokens)
- [OpenZeppelin Contracts — Tokens — ERC-20 — Overview](https://docs.openzeppelin.com/contracts/5.x/erc20)
- [OpenZeppelin Contracts — Tokens — ERC-20 — Creating Supply](https://docs.openzeppelin.com/contracts/5.x/erc20-supply)
- [OpenZeppelin Contracts — Tokens — ERC-721](https://docs.openzeppelin.com/contracts/5.x/erc721)
- [OpenZeppelin Contracts — Tokens — ERC-1155](https://docs.openzeppelin.com/contracts/5.x/erc1155)
- [OpenZeppelin Contracts — Tokens — ERC-4626](https://docs.openzeppelin.com/contracts/5.x/erc4626)
- [OpenZeppelin Contracts — Tokens — ERC-6909](https://docs.openzeppelin.com/contracts/5.x/erc6909)
- [OpenZeppelin Contracts — Governance](https://docs.openzeppelin.com/contracts/5.x/governance)
- [OpenZeppelin Contracts — Utilities](https://docs.openzeppelin.com/contracts/5.x/utilities)
- [OpenZeppelin Contracts — Subgraphs — Overview](https://docs.openzeppelin.com/contracts/5.x/subgraphs)
- [OpenZeppelin Contracts — Subgraphs — Automatic Generation](https://docs.openzeppelin.com/contracts/5.x/subgraphs/generat
…

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