# OpenZeppelin Contracts

- **Canonical URI:** https://www.vioscale.ai/software/openzeppelin-contracts
- **Category:** Blockchain Dev Tools
- **Homepage:** https://www.openzeppelin.com/contracts
- **Also known as:** openzeppelin-contracts
- **Profile claimed by vendor:** no
- **Last updated:** 2026-10-05T10:03:00.210Z

## vioscaleAI score

**31.8 / 100**, confidence 31% (low). Computed 2026-10-05.

Composite of weighted, independently-sourced signals (no user reviews, no vendor payment).

| Signal | Score | Weight | Contribution | Evidence present |
|---|--:|--:|--:|:--:|
| capabilities | 28.9 | 0.083 | 2.4 | ✓ |
| repo_stars | 44 | 0.033 | 1.5 | ✓ |
| integrations | 0 | 0.053 | 0 | - |
| dependent_projects | 0 | 0.08 | 0 | - |
| dev_activity | 0 | 0.12 | 0 | ✓ |
| release_cadence | 0 | 0.067 | 0 | - |
| security_posture | 0 | 0.087 | 0 | - |
| package_downloads | 0 | 0.173 | 0 | - |
| security_score | 0 | 0.053 | 0 | - |
| community_qa_activity | 0 | 0.08 | 0 | - |

## Pricing

_As of 2026-08-21, [verify at source](https://www.openzeppelin.com/contracts). Independently observed._

Free · Free tier

> Free and open source

| Plan | Price | Free | Commitment |
|---|---|:--:|---|
| Open Source | Free | ✓ | - |

### Open Source

Free access to OpenZeppelin Contracts library

## About

Provides battle-tested smart contract code implementing ERC standards and security best practices for blockchain development, supporting Solidity, Cairo, Stellar, Sui, and other platforms.

_Independently observed._

## Platform & deployment

- **Platforms:** CLI, Web
- **Deployment:** Self-hosted

## Capabilities

_The capabilities that matter for Blockchain Dev Tools. "-" = undocumented, not absent._

| Capability | Supported |
|---|:--:|
| **Capabilities** | |
| Tooling type | Contract library |
| Evm compatible only | ✗ |
| Local dev network | - |
| Native fuzzing invariant testing | - |
| Mainnet forking | - |
| Contract verification integration | - |
| Trace debugger | - |
| Gas profiling | - |
| Archive node access | - |
| Graphql indexing | - |
| Static analysis security tool | - |
| Open source | ✓ |
| Maintenance status | Active |

## FAQ

### What is OpenZeppelin Contracts?

Provides battle-tested smart contract code implementing ERC standards and security best practices for blockchain development, supporting Solidity, Cairo, Stellar, Sui, and other platforms. It is indexed under Blockchain Dev Tools.

_Source: [https://www.openzeppelin.com/contracts](https://www.openzeppelin.com/contracts)._

### Is OpenZeppelin Contracts free to use?

OpenZeppelin Contracts is open source, so it can be self-hosted and used at no licence cost. It is released under the AGPL-3.0 licence. Pricing changes often, so verify at source before relying on it.

_Source: [https://www.openzeppelin.com/contracts](https://www.openzeppelin.com/contracts)._

### What platforms does OpenZeppelin Contracts support?

OpenZeppelin Contracts supports the web and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.

_Source: [https://www.openzeppelin.com/contracts](https://www.openzeppelin.com/contracts)._

### Can OpenZeppelin Contracts be self-hosted?

Yes. OpenZeppelin Contracts can be deployed self-hosted, so it does not have to run on the vendor's infrastructure.

_Source: [https://www.openzeppelin.com/contracts](https://www.openzeppelin.com/contracts)._

### Is OpenZeppelin Contracts open source?

Yes. OpenZeppelin Contracts is published under the AGPL-3.0 licence, a copyleft licence, so check its terms before embedding it in a closed-source product. Licence terms can change between releases, so verify against the repository for the version you intend to use.

_Source: [https://github.com/openzeppelin/openzeppelin-skills](https://github.com/openzeppelin/openzeppelin-skills)._


## Facts

Every value below carries its source and our confidence. Facts are re-crawled on a freshness schedule.

### adoption

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| adoption.github_stars | 214 | [link](https://github.com/openzeppelin/openzeppelin-skills) | 2026-10-05 | 90% (high) |

### license

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| license.spdx | AGPL-3.0 | [link](https://github.com/openzeppelin/openzeppelin-skills) | 2026-10-05 | 95% (high) |

### market

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| market.availability | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | [link](https://www.openzeppelin.com/contracts) | 2026-08-21 | 75% (high) |

### pricing

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| pricing.free_tier | yes | [link](https://www.openzeppelin.com/contracts) | 2026-08-21 | 60% (medium) |
| pricing.price_level | free | [link](https://www.openzeppelin.com/contracts) | 2026-08-21 | 60% (medium) |
| pricing.model | commercial | [link](https://www.openzeppelin.com/contracts) | 2026-10-05 | 40% (low) |

### activity

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| activity.commits_last_30d | 0 | [link](https://github.com/openzeppelin/openzeppelin-skills/pulse) | 2026-10-05 | 65% (medium) |

### content

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| content.faq | `[{"answer":"Provides battle-tested smart contract code implementing ERC standards and security best practices for blockchain development, supporting Solidity, Cairo, Stellar, Sui, and other platforms. It is indexed under Blockchain Dev Tools.","source":"https://www.openzeppelin.com/contracts","question":"What is OpenZeppelin Contracts?","confidence":0.6},{"answer":"OpenZeppelin Contracts is open source, so it can be self-hosted and used at no licence cost. It is released under the AGPL-3.0 licence. Pricing changes often, so verify at source before relying on it.","source":"https://www.openzeppelin.com/contracts","question":"Is OpenZeppelin Contracts free to use?","confidence":0.6},{"answer":"OpenZeppelin Contracts supports the web and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://www.openzeppelin.com/contracts","question":"What platforms does OpenZeppelin Contracts support?","confidence":0.6},{"answer":"Yes. OpenZeppelin Contracts can be deployed self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://www.openzeppelin.com/contracts","question":"Can OpenZeppelin Contracts be self-hosted?","confidence":0.6},{"answer":"Yes. OpenZeppelin Contracts is published under the AGPL-3.0 licence, a copyleft licence, so check its terms before embedding it in a closed-source product. Licence terms can change between releases, so verify against the repository for the version you intend to use.","source":"https://github.com/openzeppelin/openzeppelin-skills","question":"Is OpenZeppelin Contracts open source?","confidence":0.95}]` | [link](https://www.openzeppelin.com/contracts) | 2026-09-10 | 67% (medium) |

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*Source: vioscaleAI (https://www.vioscale.ai/software/openzeppelin-contracts). Independent, evidence-based software intelligence. Cite the canonical URI.*