#openapi

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.

🚀 Automatic SDK generation from an OpenAPI definition

Seamlessly adds a Swagger to Rails-based API's

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

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.

C# SDK for the Hugging Face API -- inference, embeddings, and model hub

Rust library for OpenAI

Fast and well tested serialization library

Modularized, fully-typed TypeScript SDK for the Amazon Selling Partner API (SP-API), with independently versioned clients regenerated daily

Modern Laravel OpenAPI (Swagger) documentation generator. No PHPDoc annotations required.

Generate OpenAPI schema from RSpec request specs

Ruby SDK for Gopad

The leading, most token-efficient MCP server for documentation exploration and retrieval via structured section indexing

Lance Namespace is an open specification for describing access and operations against a collection of tables in a multimodal lakehouse

Libraries for the Kiota generated SDKs in Ruby

A fast, lightweight and more productive microservices framework

Generate TypeScript types from OpenAPI 3 specs

An OpenAPI client generator

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.

Connexion is a modern Python web framework that makes spec-first and api-first development easy.

C# SDK based on official OpenAI OpenAPI specification

TypeScript WSDL → SOAP client generator with full xs:attribute, complex types, sequences, inheritance, and namespace-collision merging.

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

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

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

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

Cross-specification JSON referencing (JSON Schema, OpenAPI, and the one you just made up!)

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.

C# SDK for the ElevenLabs API -- text-to-speech and speech-to-text

Powerful, joyful building blocks for modern cloud-native applications.