#openapi3

Huma REST/HTTP API Framework for Golang with OpenAPI 3.1

vacuum is the worlds fastest and most versatile OpenAPI, AsyncAPI & JSON Schema linter, docs generator and toolkit. It tears through API specs at light speed. 100% compatible with Spectral rulesets, and OpenAPI 3.0, 3.1 and 3.2

A fast serialization and validation library, with builtin support for JSON, MessagePack, YAML, and TOML

A fast Java JSON schema validator that supports draft V4, V6, V7, V2019-09 and V2020-12

Plugin for converting OpenAPI 3.0 specs to the Postman Collection (v2) format

Semantic parser for API specifications

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.

A plugin for the Fastify webserver to autogenerate a Fastify configuration based on a OpenApi(v2/v3) specification.

Build APIs your users love ❤️ with Speakeasy. ✨ Polished and type-safe SDKs. 🌐 Terraform providers, MCP servers, CLIs and Contract Tests for your API. OpenAPI native.

OpenAPI React Query Codegen is a code generator for creating React Query (also known as TanStack Query) hooks based on your OpenAPI schema.

SwaggerHub CLI

Breeze — High-Performance Golang Web Framework

Generate TypeScript types from OpenAPI 3 specs

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.

OpenApi schema validation for OpenApi versions v2, v3.0.x, v3.1.x and v3.2.x

Bump.sh CLI - Deploy your OpenAPI & AsyncAPI documentations from your CI

APISpec - Generate OpenAPI 3.1 specs from Go code with intelligent framework detection and call graph analysis. Supports Gin, Echo, Chi, Fiber, and net/http.

Agentic-friendly CLI generator for APIs: turn Swagger, OpenAPI, and google.api.http protos into single-binary CLIs with catalogs and generated Skills.

Your API mocking tool for OpenAPI and AsyncAPI using Go and JavaScript - https://mokapi.io

A set of packages and tools for working with OpenAPI, Swagger, Arazzo and Overlay Specification documents.

Library for OpenAPI 3 with spring-boot

Gesso — OpenAPI 3.0/3.1/3.2 contract testing for PHP. Framework-independent core with Laravel, Symfony, Pest, and PSR-7 adapters. PHPUnit coverage, request/response validation, fuzzing, and drift detection.

Sane and flexible OpenAPI 3 schema generation for Django REST framework.

Format an OpenAPI document by ordering, formatting and filtering fields.

Resolving Swagger/OpenAPI 2.0 and 3.0 Parser

openapi_first is a Ruby gem for request / response validation and contract-testing against an OpenAPI API description. It makes APIFirst easy and reliable.

Python OpenAPI3 client/validator w\ {a,}syncio

OpenAPI 3.0 and 3.1 and 3.2 (and Swagger v2) implementation for Go (parsing, converting, validation, and more)

Tool for generating TypeScript client code for given Swagger API endpoints