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: 2026-07-05 00:18:41 UTC
JSON Representation

https://github.com/patarapolw/ts-openapi-fastify

Fastify with OpenAPI and typescript-json-schema example

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https://github.com/cstrp/telestash

A Telegram-powered storage build with nuxt 4 & tauri (desktop app for all platforms).

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https://github.com/fvillanuevape/spring-boot-openapi-oke

Article API Spring Boot and Kubernetes - Spring Boot Open API OKE, es una demo sobre como usar los servicios de kubernetes de oracle cloud para desplegar una API desarrollado en spring boot y de igual manera la documentación de la API usando OAS 3.0.0.

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https://github.com/eliona-smart-building-assistant/go-eliona-api-client

Go API client for Eliona App SDK

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https://github.com/soenneker/soenneker.attributes.publicopenapiobject

For decorating objects that should be publicly accessible to see within OpenApi

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https://github.com/omermecitoglu/openapi-code-generator

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https://github.com/dacr/counters

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https://github.com/gpbultz/apidocandmock

🔧OpenApi extensions and Mocking objects using Bogus

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https://github.com/ubill-ge/sdk-php

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https://github.com/esn8der/todo-app

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https://github.com/miensoap/kishelper

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https://github.com/marcellharmaci/plantfriend-spring

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

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https://github.com/dreamquality/swagger-coverage-cli

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https://github.com/warfox/products-spring-kotlin-cljs

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https://github.com/huakunshen/ossinsight-client

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https://github.com/nachotoast/foundationx-api

Bots, web server, and other backend functionality for the FoundationX server network.

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https://github.com/samgutentag/pyaudius

A Python Implentation of the Audius API

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https://github.com/maemreyo/oas2ts

A Node.js tool that converts OpenAPI YAML schemas into TypeScript types and interfaces, with support for recursive `$ref` resolution and customizable file structure.

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https://github.com/cicatriiz/cdisc-library-mcp-server

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Convert OpenAPI specifications to LLM-friendly documentation format.

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https://github.com/temirlan-zh/test-task-users-and-tasks

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https://github.com/soenneker/soenneker.github.filestore

A high-level file system utility for GitHub repositories, built on the GitHub OpenAPI client. Supports reading, writing, deleting, listing, and checking file existence via the GitHub Contents API.

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https://github.com/natthasath/demo-laravel-scramble

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https://github.com/tgrifoni/task-management-api

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https://github.com/rudeboyone/tarefastest

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https://github.com/arkanatelecom/arkana-wiki

Oficial Arkana Documentation Wiki ressource

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https://github.com/shopiqo/docker-yaml-include

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https://github.com/nikothomas/ribbon-health

An API client for interacting with the data provided by Ribbon Health, including information about healthcare providers, locations, insurances, and more.

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https://github.com/kopfrechner/scalar-chrome-extension

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https://github.com/sigpwned/diffbot-openapi-spec

Community OpenAPI Spec for Diffbot API

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https://github.com/gopad/gopad-js

Javascript SDK for Gopad

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https://github.com/letehaha/walutomat-sdk

Unofficial SDK clients for the Walutomat API v2.0.0. Walutomat is a Polish peer-to-peer currency exchange platform operated by Currency One. This SDK provides typed clients for their REST API, covering wallet management, transfers, direct FX, and the P2P market order book.

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https://github.com/g-nelson1/tiingo-openapi

Tiingo OpenAPI Doc

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https://github.com/juliocesarscheidt/go-orm-api-clean-arch

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https://github.com/vaelixbank/vaelix-exchange

The Vaelix Exchange Open Source Platform

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https://github.com/neelkamath/backend-prototype

⏩ Template for backend prototypes

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https://github.com/viniciusferreira7/bun-auth

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https://github.com/daymade/microservices-management-platform

Service Catalog Demo is a microservice API management platform written using golang and vue, where users can manage services and versions through a frontend dashboard.

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https://github.com/controlplane-com/types-ts

Control Plane TypeScript type definitions for type-safe API interactions

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https://github.com/andyfrith/weather-api

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https://github.com/w3labkr/ipynb-openapi

Example using openapi for jupyter.

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https://github.com/spanpanel/span-panel-api

Python API client for SPAN Panel - provides async interface to control circuits, monitor power usage, and manage panel settings

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https://github.com/soenneker/soenneker.highlevel.clientutil

An async thread-safe singleton for HighLevel OpenApiClient.

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https://github.com/sirerun/mint

mint is an open-source Go CLI that turns any OpenAPI 3.0/3.1 specification into a working Go MCP server.

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https://github.com/murilobeltrame/springjerseydemoapi

Demo API built with Spring and Jersey

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https://github.com/aitthi/rust-api-example

a simple example of rust api

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https://github.com/soenneker/soenneker.cloudflare.openapi.suite

A comprehensive suite of utility libraries for Cloudflare's OpenApi operations

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https://github.com/davidsteiner/orator

Rust server stub generation from OpenAPI 3.1 specs

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

A GitHub .NET client generated from their OpenAPI schema, updated daily

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https://github.com/dougborg/stocktrim-openapi-client

Production-ready Python client for the StockTrim Inventory Management API with transport-layer resilience

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https://github.com/soenneker/soenneker.openapi.fixer

A utility that fixes problem OpenApi specs being converted into clients

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

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https://github.com/soenneker/soenneker.instantly.clientutil

An async thread-safe singleton for Instantly OpenApiClient

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

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

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https://github.com/robinmordasiewicz/f5xc-api-fixed

Validated F5 Distributed Cloud OpenAPI specifications

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https://github.com/soenneker/soenneker.trustedform.certificates.openapiclient

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https://github.com/wilson0x4d/tornado-openapi

..an OAS-generation library for Tornado.

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https://github.com/samuele-barbiera/kubb-gen-scribe-cli

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https://github.com/fibercrypto/libskycoin-cpp

Skycoin client libraries for the C++ language

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https://github.com/soenneker/soenneker.cloudflare.zones

A .NET typesafe implementation of Cloudflare's Zones API

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https://github.com/zaiducreatesjarvis/blockchain-event-ticketing-app

Web application for selling tickets using blockchain technology.

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https://github.com/thavarshan/orthrus

⛨ A production-ready, multi-tenant JWT authentication service built with Symfony 7.3 and PHP 8.2+.

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https://github.com/gah-code/ai-prompt-bootcamp

Learning practical coding skills for working professionally with AI

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

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

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

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https://github.com/zemloai-ctrl/zemloai-api

Zemlo ZQP v1.0 Lite – The First AI-Agent Optimized Logistics Infrastructure. Provides deterministic market signals, situational awareness, and automated risk analysis via a no-auth API. Built to be the "Logistics PageRank" for autonomous agents and humans alike.

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