OpenAPI Specification

The OpenAPI Specification (OAS), previously known as the Swagger Specification, is a specification for a programming language-agnostic, machine-readable interface definition language for describing, producing, consuming, and visualizing web services. OpenAPI documents describe API services and are represented in YAML or JSON formats.

GitHub: https://github.com/topics/openapi
Wikipedia: https://en.wikipedia.org/wiki/OpenAPI_Specification
Repo: https://github.com/OAI/OpenAPI-Specification
Created by: OpenAPI Initiative, Tony Tam, Darrel Miller, Mike Ralphson, Ron Ratovsky, Uri Sarid, Jason Harmon
Released: August 10, 2011
Related Topics: json-schema, raml, rest-api,
Aliases: open-api, swagger-spec, swagger-specification, openapi-spec, openapi-specification, open-api-specification, oas, openapi-description,
Last updated: 2026-07-08 00:22:40 UTC
JSON Representation

https://github.com/oxhq/oxcribe

Runtime-first Laravel package that enriches routes with Oxinfer static analysis

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https://github.com/soenneker/soenneker.spotify.openapiclientutil

A thread-safe utility for obtaining Spotify's OpenApiClient singleton.

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https://github.com/arkptz/mitm2openapi

Convert mitmproxy flow dumps and HAR files to OpenAPI 3.0 — fast Rust alternative to mitmproxy2swagger with HAR support

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https://github.com/soenneker/soenneker.calcom.openapiclientutil

A thread-safe utility for obtaining CalCom's OpenApiClient singleton.

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https://github.com/soenneker/soenneker.workos.httpclients

A thread-safe singleton HttpClient for WorkOs's OpenAPI integration.

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https://github.com/soenneker/soenneker.sixtyfour.httpclients

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https://github.com/soenneker/soenneker.elevenlabs.openapiclientutil

A thread-safe utility for obtaining ElevenLabs's OpenApiClient singleton.

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https://github.com/soenneker/soenneker.firecrawl.openapiclientutil

A thread-safe utility for obtaining Firecrawl's OpenApiClient singleton.

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https://github.com/soenneker/soenneker.dnsimple.openapiclientutil

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https://github.com/soenneker/soenneker.windmill.httpclients

A thread-safe singleton HttpClient for Windmill's OpenAPI integration.

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https://github.com/definancy/definancy-spec

Definancy contract — OpenAPI wire spec + cross-language conformance suite

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https://github.com/soenneker/soenneker.algolia.httpclients

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https://github.com/cl0v1s/openapi-mcpify

Turn any OpenAPI spec into a live MCP server — with built-in confirmation prompts for mutating operations.

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https://github.com/tdspora/tdm_rulesgen

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https://github.com/merkys/openapi-render

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https://github.com/uneva/unplugin-openapi-gen-ts

OpenAPI Generated TypeScript

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https://github.com/soenneker/soenneker.netlify.openapiclientutil

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https://github.com/soenneker/soenneker.box.httpclients

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https://github.com/tonystrawberry/playground.openapi.generator

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https://github.com/ghchinoy/openapi-from-grpc

gRPC service with autogenerated OpenAPI spec via gRPC Gateway for REST/HTTP

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https://github.com/gabireze/password-generator-api

A flexible and well-structured API for generating secure passwords, built with NestJS. It allows customization of character types, quantity, and output format (JSON, XML, YAML, CSV, text, or HTML).

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https://github.com/soenneker/soenneker.temporal.openapiclient

A .NET client generated from the Temporal OpenAPI schema, updated daily

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https://github.com/roxyapi/postman-collections

Postman collections for astrology, Vedic, tarot, numerology, I Ching, biorhythm, Human Design and more. Auto synced from OpenAPI, one API key.

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https://github.com/voznov/zod-dto

Zod to DTO classes for TypeScript & NestJS & OpenAPI

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https://github.com/badsyntax/lamernews-api-client

Lamer News API client

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https://github.com/azhirov/openapi-3.0-types

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https://github.com/soenneker/soenneker.asana.openapiclientutil

A thread-safe utility for obtaining Asana's OpenApiClient singleton.

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https://github.com/burin-labs/harn-openapi

Pure-Harn OpenAPI 3.1 parser and SDK codegen helpers

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https://github.com/huksley/swagger-explorer

Run Swagger UI locally against a folder of OpenAPI or Swagger specifications

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https://github.com/soenneker/soenneker.openrouter.openapiclientutil

A thread-safe utility for obtaining OpenRouter's OpenApiClient singleton.

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https://github.com/jinjihuang88-ui/maplebridge-open

Public API docs for MapleBridge, a North America to China B2B supplier matching platform.

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https://github.com/soenneker/soenneker.firecrawl.httpclients

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https://github.com/asafr-dev/supportdesk-api

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https://github.com/bonukai/typescript-routes-to-openapi

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https://github.com/unexist/showcase-documentation-openapi-asciidoc

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https://github.com/foxfriends/openfetch

Fetch-like OpenAPI client library

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https://github.com/h0rv/zchema

Typed, validated JSON APIs and OpenAPI 3.1 for Zig's std.http.Server

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https://github.com/echelon-solutions/swagger-codegen-router-template

A template for swagger-codegen that generates a Node.js project that validates and routes requests to a url.

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https://github.com/vitorvogomes/fastapi-stand-livros

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https://github.com/soenneker/soenneker.n8n.httpclients

A thread-safe singleton HttpClient for N8n's OpenAPI integration.

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https://github.com/nikitakumawat/weather-app.github.io

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https://github.com/ucl/isenseflu-openapi

OpenAPI Definitions for i-sense flu API

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https://github.com/dacr/primes-server-akkahttp

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https://github.com/jimsten/ticketflow

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https://github.com/bradpatras/openapi-swift-package-schema-only

Testing out a swift package containing only the OpenAPI schema and generator plugin that can be consumed by an iOS app via spm.

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https://github.com/n8n-code/n8n-nodes-uniswap

Uniswap decentralized trading protocol for automated liquidity provision and token swaps across multiple blockchains

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https://github.com/evilfreelancer/openchill

Prototype of Swagger / OpenAPI PHP client generator

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https://github.com/harmindersinghnijjar/question-translator-python

A Python program to translate GPT-3 answers from English to Punjabi using OpenAI and Google Translate.

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https://github.com/soenneker/soenneker.composio.openapiclientutil

A thread-safe utility for obtaining Composio's OpenApiClient singleton.

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https://github.com/valerii15298/openapi-spec

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https://github.com/soenneker/soenneker.stoplight.openapibundler

A utility library to download and bundle OpenApi specs from Stoplight

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https://github.com/monkeyscloud/monkeyslegion-openapi

Automatic OpenAPI 3.1 specification generator and documentation middleware for the MonkeysLegion framework.

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https://github.com/elipzis/aping

📲 A simple API Ping tool to feed a Swagger/OpenAPI 3.0 document file, call all paths and record time and responses

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https://github.com/fs-frost/openapi2go

CLI tool to generate Go code from OpenAPI specifications.

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https://github.com/neelagarwal98/modular-equity-research-system

A prototype application that automates financial equity research using a coordinated multi-module architecture. It combines the power of OpenAI's GPT-3.5-turbo, Serper API for Google search and RAG (Retrieval-Augmented Generation) to deliver accurate, well-sourced financial analysis reports with confidence scoring.

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https://github.com/k8scat/fxiaoke

纷享销客开放平台 Go SDK

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https://github.com/numminorihsf/openapi-to-json-schema

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https://github.com/mike-brady/flask-apispec-tools

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https://github.com/kanryu/validagen

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https://github.com/danhpaiva/pbh.smfa.viagensservidor.api.net

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https://github.com/wasabina67/fastapi-react-todo

FastAPI React Todo

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https://github.com/av/tools

Docker image for installing and running tools for LLM agents (MCP, OpenAPI, UVX, NPX, Python)

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https://github.com/bavix/gripmock-openapi

GripMock OpenAPI Specification

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https://github.com/abrehan2/dynamo

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https://github.com/oamerge/oamerge

Merge and share OpenAPI endpoints and schemas.

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https://github.com/echelon-solutions/swagger-node-vagrant

A portable Vagrant environment for running swagger-node to quickly create APIs.

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Last synced: 30 Apr 2026

https://github.com/mahmudindev/oreno-comicking-openapi-python

Python-based generated ComicKing OpenAPI client.

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https://github.com/alessandro1918/swagger-api

Um exemplo de documentação de rotas de API com Swagger. Especificação de endpoints, parâmetros, retorno, tudo facilmente documentável e consultável em uma página web disponível em uma rota da própria API.

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https://github.com/thanadolps/swarch_rest

Simple REST API Assignment as part of Chulalongkorn 2110521 Software Architecture course.

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https://github.com/kwaytv/hono-steamer-api

⚡ High-performance Steam profile resolver API with MySQL-powered smart caching system | Built with Hono & TypeScript 🚀

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https://github.com/toshiemon18/schemar

Design and generate OpenAPI schema with Ruby models

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https://github.com/bujosa/alzirr

This is my first project related with the Spring Boot ecosystem, I want to achieve with this project, understand what the architecture and structure of this framework is like.

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Last synced: 10 Jul 2025

https://github.com/apisyouwonthate/openapinotswagger.com

Next.js repo for openapinotswagger.com

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https://github.com/planet-a-ventures/affinity-client-python

API client for Affinity (www.affinity.co)

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https://github.com/vincentbollaert/turborepo-playground

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https://github.com/soldarlabs/oapi-litegraph-nodegen

Generate dynamic and callable Litegraph nodes from OpenAPI specifications, enabling seamless API integration in a visual programming environment.

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https://github.com/yinchi/openapi-cli

CLI for working with APIs using the OpenAPI specifications

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https://github.com/webitel/webitel-openapi-client-go

Webitel OpenAPI Client for Go

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https://github.com/straylittlepunk/deepl

Openapi auto generated deepl api client

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https://github.com/jeremi/registry-docs

Canonical documentation website for the registry project family.

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https://github.com/ugurcan-aytar/rampart

Cloud-agnostic supply chain incident response engine. One OpenAPI contract, four consumers: Backstage plugin, GitHub Action, CLI, Slack. Go + Rust, stdlib-first.

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