#openapi

ReadMe's official command-line interface (CLI) and GitHub Action 🌊

Rapid development of self-documenting APIs

A flexible JSON/YAML linter for creating automated style guides, with baked in support for OpenAPI (v3.1, v3.0, and v2.0), Arazzo v1.0, as well as AsyncAPI v2.x.

The node-sdk-core repository contains core functionality required by code generated by the IBM OpenAPI SDK Generator.

Cloud Native OGC APIs server, written in Go

LoopBack makes it easy to build modern API applications that require complex integrations.

Openapi-core is a Python library that adds client-side and server-side support for the OpenAPI v3.0 and OpenAPI v3.1 and OpenAPI v3.2 specification.

Fast and well tested serialization library

Huma REST/HTTP API Framework for Golang with OpenAPI 3.1

Tools to generate an OAI spec from go source

🧡 The meta framework for code generation. Automate OpenAPI to type-safe TypeScript, Zod, and TanStack Query with a modular, plugin-based engine.

The AI-Native Infrastructure for Enterprise Apps. Powered by ObjectStack (ObjectQL, ObjectOS, Object UI). Turn Prompts into Enterprise Software.

Build beautiful, interactive API Docs with embeddable React or Web Components, powered by OpenAPI and Markdown.

Alibaba Cloud CLI

👨‍🚀 Turn API specifications into production-ready SDKs, validators, mocks, and more. 20+ plugins. Millions of weekly npm downloads. Used by Vercel, OpenCode, PayPal, AWS, Autodesk, and many more.

Comprehensive tooling for working with OpenAPI definitions.

The CLI for working with JSON Schema. Covers formatting, linting, testing, bundling, and more for both local development and CI/CD pipelines

OpenAPI (f.k.a Swagger) Specification code generator. Supports C#, PowerShell, Go, Java, Node.js, TypeScript, Python

Golang client for the Datadog API

A tool for generating Refit interfaces and contracts from OpenAPI (Swagger) specifications

Generate OpenAPI schema from RSpec request specs

Ruby SDK for Gopad

Every API has a secret identity. This finds it, absorbs every feature from every competing tool, then builds the GOAT CLI — designed for AI agents first, with SQLite sync, offline search, and compound insight commands.

libopenapi is a fully featured, high performance OpenAPI 3.2, 3.1, 3.0, Overlays and Arazzo parser, library, validator and toolkit for go applications.

OpenAPI Spec Validator is a CLI, pre-commit hook and python package that validates OpenAPI Specs against the OpenAPI 2.0 (aka Swagger), OpenAPI 3.0 and OpenAPI 3.1 specification.

Seamlessly adds a Swagger to Rails-based API's

Eliminate API integration headaches with Specmatic's no-code AI-powered API development suite. Teams ship APIs 10x faster by transforming specifications into executable contracts instantly—no coding required, no integration surprises.

Resolving Swagger/OpenAPI 2.0 and 3.0 Parser

Official SDKs, API clients, and CLI/MCP tools for Daytona, the secure and elastic infrastructure for running AI-generated code

Build production-ready documentation from Markdown in seconds. No React, no bloat, just content.