OpenZeppelin Contracts
OpenZeppelin Contracts is a library for secure smart contract development. observed · 2026-08-28
Health v2 · maintenance only
89/100
- Activity 99
- Release rhythm 71
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: 99
- age_days: 3684
- days_rel: 35
- days_push: 7
- n_releases_24m: 8
Adoption not part of the score
27234 stars · 12406 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
OpenZeppelin Contracts is a library of secure, community-vetted Solidity smart contracts for Ethereum and other EVM blockchains. It provides audited implementations of token standards like ERC20 and ERC721, role-based access control, and reusable components, plus an upgradeable variant for proxy-based contracts.
Use cases
- create an ERC20 token in solidity
- deploy an NFT contract with ERC721
- add role-based access control to a smart contract
- build upgradeable smart contracts with proxies
- secure a defi protocol with audited contract code
- generate a smart contract boilerplate quickly
When to choose
- you are developing Solidity contracts for Ethereum or any EVM chain and want battle-tested, audited building blocks
- you need standard token implementations (ERC20, ERC721, ERC1155) or access control patterns
- you want to minimize smart contract security risk with community-reviewed code
When to avoid
- you are developing for non-EVM chains like Starknet or Sui (separate OpenZeppelin libraries exist)
- you need a full dapp framework or deployment tooling rather than contract code
- you require a non-Solidity language for contract development
Facets
library · maturity stable
security sdk developer-tools plugin-system blockchain fintech security developer-tools cross-platform smart-contracts erc20 erc721 token-standards access-control upgradeable-contracts defi web3 cryptocurrency ethereum evm solidity
6 sources
- readme: https://github.com/OpenZeppelin/openzeppelin-contracts · fetched 2026-08-28 · 669b1a7b493c
- homepage: https://openzeppelin.com/contracts · fetched 2026-08-29 · 3fc211823a55
- site_page: https://docs.openzeppelin.com/ · fetched 2026-08-29 · 878c1d01266a
- site_page: https://www.openzeppelin.com/about-us · fetched 2026-08-29 · 2935d3d9ba8e
- site_page: https://www.openzeppelin.com/about · fetched 2026-08-29 · 4052c47f4b64
- site_page: https://www.openzeppelin.com/faqs · fetched 2026-08-29 · bd7fba8e4e3b
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| OpenZeppelin/openzeppelin-contracts | main | 89 |
| OpenZeppelin/openzeppelin-contracts-upgradeable | mirror | 90 |
For agents
markdown · JSON · MCP: product_card(name="OpenZeppelin/openzeppelin-contracts")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem