openzeppelin-contracts

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Skill based on OpenZeppelin Contracts (docs as of 2026-02-09), generated from
sources/openzeppelin
.

OpenZeppelin Contracts is a library for secure smart contract development on EVM. Use via inheritance (e.g. ERC20, AccessControl) or

using for

(e.g. ECDSA, Math). Covers access control (Ownable, RBAC, AccessManager, TimelockController), tokens (ERC20, ERC721, ERC1155, ERC4626, ERC6909), upgradeable variants, and utilities (crypto, math, introspection, structures, storage).

基于OpenZeppelin Contracts的Skill（文档更新至2026-02-09），由
sources/openzeppelin
生成。

OpenZeppelin Contracts是用于在EVM上开发安全智能合约的库。可通过继承（如ERC20、AccessControl）或

using for

语法（如ECDSA、Math）使用。涵盖访问控制（Ownable、RBAC、AccessManager、TimelockController）、代币（ERC20、ERC721、ERC1155、ERC4626、ERC6909）、可升级合约变体，以及实用工具（加密、数学、内省、数据结构、存储）。

Core References

核心参考

Topic	Description	Reference
Overview	Library usage, inheritance, extending contracts	core-overview
Access Control	Ownable, AccessControl (RBAC), AccessManager, TimelockController	core-access-control
Tokens	Token standards and when to use ERC20/721/1155/4626/6909	core-tokens
ERC20	Fungible tokens, decimals, transfer, supply	core-erc20
ERC721	Non-fungible tokens, URI storage, minting	core-erc721
ERC1155	Multi-token (fungible + NFT), batch ops, safe transfer to contracts	core-erc1155
ERC4626	Tokenized vaults, shares vs assets, inflation attack mitigation	core-erc4626
ERC6909	Multi-asset (no batch/callbacks), granular approvals, extensions	core-erc6909
ERC20 Supply	Creating supply with _mint and _update, fixed and reward patterns	core-erc20-supply

主题	描述	参考链接
概述	库的使用、继承、合约扩展	core-overview
访问控制	Ownable、AccessControl（RBAC）、AccessManager、TimelockController	core-access-control
代币	代币标准及ERC20/721/1155/4626/6909的适用场景	core-tokens
ERC20	可替代代币、小数位数、转账、供应量	core-erc20
ERC721	非同质化代币、URI存储、铸造	core-erc721
ERC1155	多代币（可替代+NFT）、批量操作、向合约安全转账	core-erc1155
ERC4626	代币化金库、份额与资产、通胀攻击缓解	core-erc4626
ERC6909	多资产（无批量/回调）、细粒度授权、扩展功能	core-erc6909
ERC20供应量	使用_mint和_update创建供应量、固定及奖励模式	core-erc20-supply

Features

功能特性

Upgradeable

可升级合约

Topic	Description	Reference
Upgradeable Contracts	contracts-upgradeable, initializers, namespaced storage	features-upgradeable

主题	描述	参考链接
可升级合约	contracts-upgradeable、初始化器、命名空间存储	features-upgradeable

Governance & Accounts

治理与账户

Topic	Description	Reference
Account Abstraction	ERC-4337 stack: UserOperation, EntryPoint, Bundler, Paymaster	features-account-abstraction
Governor	On-chain governance, ERC20Votes, quorum, timelock, proposal lifecycle	features-governance
Multisig	ERC-7913 signers, threshold and weighted multisig with Account	features-multisig
Smart Accounts	ERC-4337 Account, signers, factory, UserOp, batched execution	features-accounts
EOA Delegation	EIP-7702 delegation to contracts, SignerEIP7702, authorization	features-eoa-delegation

主题	描述	参考链接
账户抽象	ERC-4337栈：UserOperation、EntryPoint、Bundler、Paymaster	features-account-abstraction
治理器	链上治理、ERC20Votes、法定人数、时间锁、提案生命周期	features-governance
多签	ERC-7913签名者、基于Account的阈值及权重多签	features-multisig
智能账户	ERC-4337账户、签名者、工厂、UserOp、批量执行	features-accounts
EOA委托	EIP-7702向合约委托权限、SignerEIP7702、授权	features-eoa-delegation

Utilities

实用工具

Topic	Description	Reference
Utilities	ECDSA, MerkleProof, Math, ERC165, structures, StorageSlot, Multicall	features-utilities

主题	描述	参考链接
实用工具	ECDSA、MerkleProof、Math、ERC165、数据结构、StorageSlot、Multicall	features-utilities

Best Practices

最佳实践

Topic	Description	Reference
Backwards Compatibility	Semantic versioning, storage layout, safe overrides	best-practices-backwards-compatibility
Extending Contracts	Inheritance, overrides, super, security when customizing	best-practices-extending-contracts
EOA Restriction	Why not to restrict to EOAs only; use access control instead	best-practices-eoa-restriction

主题	描述	参考链接
向后兼容性	语义化版本、存储布局、安全重写	best-practices-backwards-compatibility
扩展合约	继承、重写、super、自定义时的安全注意事项	best-practices-extending-contracts
EOA限制	为何不限制仅EOA访问；改用访问控制	best-practices-eoa-restriction