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: QuickStart
        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: Forum
    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: [email protected]