OpenZeppelin

name: OpenZeppelin
description: 'OpenZeppelin is a Web3 security platform providing tools for secure smart contract development, deployment,
  monitoring, and automation. The platform includes OpenZeppelin Contracts (battle-tested Solidity libraries), Defender (a
  developer security platform for auditing, deploying, and operating blockchain applications), the open-source OpenZeppelin
  Relayer for transaction relay infrastructure across EVM, Solana, and Stellar networks, and OpenZeppelin Monitor for real-time
  on-chain activity detection and alerting. Defender is sunsetting on July 1, 2026, with users migrating to the open-source
  Relayer and Monitor projects.

  '
image: https://www.openzeppelin.com/hubfs/openzeppelin-logo.png
tags:
- Web3
- Smart Contracts
- Blockchain
- Security
- Ethereum
- DeFi
- Solidity
- Relayer
- Monitoring
- Auditing
created: '2026-06-13'
modified: '2026-06-13'
url: https://raw.githubusercontent.com/api-evangelist/openzeppelin/refs/heads/main/apis.yml
specificationVersion: '0.19'
apis:
- name: OpenZeppelin Defender API
  description: 'The OpenZeppelin Defender API provides programmatic access to the Defender security platform, enabling management
    of smart contract deployments, transaction relaying, automated monitoring, on-chain governance proposals, and security
    automation workflows. The API uses JWT token authentication negotiated via SRP protocol and exposes modules for Deploy,
    Proposal, Relay, Action, Monitor, Admin, Networks, and Relay-Signer operations.

    '
  image: https://www.openzeppelin.com/hubfs/openzeppelin-logo.png
  humanURL: https://docs.openzeppelin.com/defender/sdk
  baseURL: https://defender-api.openzeppelin.com/v2
  tags:
  - Defender
  - Smart Contracts
  - Deploy
  - Relayer
  - Monitor
  - Automation
  - Blockchain
  - Security
  properties:
  - type: Documentation
    url: https://docs.openzeppelin.com/defender/sdk
  - type: OpenAPI
    url: https://www.api-docs.defender.openzeppelin.com/
  - type: Authentication
    url: https://docs.openzeppelin.com/defender/settings
  - type: SDKs
    url: https://www.npmjs.com/package/@openzeppelin/defender-sdk
  - type: GitHubRepository
    url: https://github.com/OpenZeppelin/defender-sdk
  - type: ChangeLog
    url: https://docs.openzeppelin.com/defender
  - type: Plans
    url: plans/plans.yml
  - type: RateLimits
    url: rate-limits/rate-limits.yml
  - type: FinOps
    url: finops/finops.yml
  contact:
  - FN: OpenZeppelin Support
    url: https://docs.openzeppelin.com/defender/faq
    email: ''
- name: OpenZeppelin Relayer API
  description: 'The OpenZeppelin Relayer is an open-source transaction relay infrastructure service that enables decentralized
    applications to submit and manage blockchain transactions across EVM-compatible networks (Ethereum, Polygon, Arbitrum,
    Optimism), Solana, and Stellar. The self-hosted REST API provides endpoints for relayer management, transaction submission
    and signing, nonce management, gas estimation, and RPC calls. It supports gasless transactions, sponsored transactions,
    and configurable policies with rate limiting at 100 requests/second (burst 300).

    '
  image: https://www.openzeppelin.com/hubfs/openzeppelin-logo.png
  humanURL: https://docs.openzeppelin.com/relayer
  baseURL: http://localhost:8080/api/v1
  tags:
  - Relayer
  - Blockchain
  - Ethereum
  - Solana
  - Stellar
  - Transactions
  - Gasless
  - Open Source
  properties:
  - type: Documentation
    url: https://docs.openzeppelin.com/relayer
  - type: OpenAPI
    url: https://docs.openzeppelin.com/relayer/1.4.x/api
  - type: OpenAPISpec
    url: https://raw.githubusercontent.com/api-evangelist/openzeppelin/main/openapi/openzeppelin-relayer-openapi.json
  - type: GitHubRepository
    url: https://github.com/OpenZeppelin/openzeppelin-relayer
  - type: SDKs
    url: https://github.com/OpenZeppelin/openzeppelin-relayer-sdk
  - type: Configuration
    url: https://docs.openzeppelin.com/relayer/configuration
  - type: Plans
    url: plans/plans.yml
  - type: RateLimits
    url: rate-limits/rate-limits.yml
  - type: FinOps
    url: finops/finops.yml
  contact:
  - FN: OpenZeppelin Community
    url: https://github.com/OpenZeppelin/openzeppelin-relayer/issues
    email: ''
- name: OpenZeppelin Monitor API
  description: 'OpenZeppelin Monitor is an open-source blockchain monitoring service that watches for specific on-chain activities
    and triggers notifications based on configurable conditions. It supports real-time monitoring of EVM-compatible networks,
    Solana, and Stellar with flexible match conditions on functions, events, and transactions. Notification channels include
    Slack, Discord, Email, Telegram, Webhooks, and custom scripts. Configurable via JSON files with cron-based scheduling
    and optional metrics server on port 8081.

    '
  image: https://www.openzeppelin.com/hubfs/openzeppelin-logo.png
  humanURL: https://docs.openzeppelin.com/monitor
  baseURL: http://localhost:8081
  tags:
  - Monitor
  - Blockchain
  - Alerts
  - Events
  - Smart Contracts
  - Notifications
  - Open Source
  - On-chain
  properties:
  - type: Documentation
    url: https://docs.openzeppelin.com/monitor
  - type: GettingStarted
    url: https://docs.openzeppelin.com/monitor/quickstart
  - type: GitHubRepository
    url: https://github.com/OpenZeppelin/openzeppelin-monitor
  - type: Plans
    url: plans/plans.yml
  - type: RateLimits
    url: rate-limits/rate-limits.yml
  - type: FinOps
    url: finops/finops.yml
  contact:
  - FN: OpenZeppelin Community
    url: https://github.com/OpenZeppelin/openzeppelin-monitor/issues
    email: ''
- name: OpenZeppelin Contracts API Reference
  description: 'The OpenZeppelin Contracts library provides a comprehensive collection of modular, reusable, and secure Solidity
    smart contracts for building decentralized applications. The API reference covers ERC token standards (ERC-20, ERC-721,
    ERC-1155), access control, governance, security utilities (reentrancy guards, pausable), upgradeable proxy patterns, and
    cryptographic primitives. Used by thousands of blockchain projects as the industry standard for secure smart contract
    development.

    '
  image: https://www.openzeppelin.com/hubfs/openzeppelin-logo.png
  humanURL: https://docs.openzeppelin.com/contracts
  baseURL: https://docs.openzeppelin.com/contracts
  tags:
  - Smart Contracts
  - Solidity
  - ERC-20
  - ERC-721
  - ERC-1155
  - Governance
  - Security
  - Open Source
  properties:
  - type: Documentation
    url: https://docs.openzeppelin.com/contracts
  - type: APIReference
    url: https://docs.openzeppelin.com/contracts/5.x/api/access
  - type: GitHubRepository
    url: https://github.com/OpenZeppelin/openzeppelin-contracts
  - type: NPMPackage
    url: https://www.npmjs.com/package/@openzeppelin/contracts
  - type: Plans
    url: plans/plans.yml
  - type: RateLimits
    url: rate-limits/rate-limits.yml
  - type: FinOps
    url: finops/finops.yml
  contact:
  - FN: OpenZeppelin Community
    url: https://forum.openzeppelin.com/
    email: ''
common:
- type: Website
  url: https://www.openzeppelin.com/
- type: Documentation
  url: https://docs.openzeppelin.com/
- type: Forums
  url: https://forum.openzeppelin.com/
- type: GitHub
  url: https://github.com/OpenZeppelin
- type: Blog
  url: https://www.openzeppelin.com/blog
- type: News
  url: https://www.openzeppelin.com/news
- type: OpenSourceStack
  url: https://www.openzeppelin.com/open-source-stack
- type: Security
  url: https://www.openzeppelin.com/security-audits
- type: Twitter
  url: https://twitter.com/OpenZeppelin
- type: Discord
  url: https://discord.openzeppelin.com/
- type: LinkedIn
  url: https://www.linkedin.com/company/openzeppelin/
- type: TermsOfService
  url: https://www.openzeppelin.com/tos
- type: PrivacyPolicy
  url: https://www.openzeppelin.com/privacy
- type: Status
  url: https://status.openzeppelin.com/
- type: Signup
  url: https://defender.openzeppelin.com/
maintainers:
- FN: API Evangelist
  url: https://apievangelist.com
  email: info@apievangelist.com