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: 2026-03-25 00:22:16 UTC
JSON Representation

https://github.com/fspv/leetcode-swagger

Swagger file for leetcode API

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Last synced: 29 Apr 2025

https://github.com/amorimjj/nestjs-redoc-try-out

NestJS-Redoc-Try-Out is an unofficial NestJS module for Redoc Try Out. It provides an easy way plugging in Redoc in a NestJS application.

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https://github.com/springfox/springfox-grails-demo

Sample application to demonstrate the capabilities of integrating with grails

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https://github.com/nikolaydubina/openapi-inline-examples

🌏 Inline OpenAPI JSON examples from filenames

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https://github.com/martinjrobins/battery-api

OpenAPI spec and python client for a battery data REST API

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https://github.com/ibaca/autorest-openapi

JAX-RS service interface generator for Open API specification

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Last synced: 11 Mar 2026

https://github.com/jshmrtn/openapi-compiler

:gear: Eixir OpenAPI Compiler

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Last synced: 13 Apr 2025

https://github.com/nunchistudio/helix

helix is a framework for building cloud-native, consistent, reliable, and high-performance (micro) services with automatic logging, tracing, observability, and event propagation across services and integrations.

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https://github.com/lob/usps-webtools-api

Open source documentation for USPS Web Tools API

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https://github.com/jean85/symfony-openapi-example

An example of using an OpenAPI spec in a Symfony application

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https://github.com/cjp2600/cutos

The easiest way to write OpenAPI 3 documentation using curl copy

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https://github.com/connectaman/fastapi-openapi-markdown-documentation-generator

Streamlit Application to generate FastAPI Documentation from the OpenAPI specs and convert it into a markdown API documentation

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https://github.com/tryagi/replicate

Generated C# SDK based on official Replicate OpenAPI specification

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https://github.com/simonkowallik/as3ninja

:octocat: AS3 Ninja is a templating and validation engine for your AS3 declarations. No matter if you prefer a CLI or Swagger REST API, AS3 Ninja has you covered!

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https://github.com/0xtheprodev/nestjs-clean-example

Clean Architecture Example using NestJS on Fastify

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https://github.com/nawaz1991/lua-oasvalidator

A FAST Lua module to validate the HTTP requests against the OpenAPI specifications of the REST server.

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https://github.com/rapter1990/foreignexchangeexample

Case Study - Openpayd Foreign Exchange Example (Spring Boot, Java 21, Docker, Maven, JUnit Test, Integration Test, In-Memory Database (H2 Database), Github Actions, Spring Open Api, Mapstruct, Spring Cache, Resillience4j (Rate Limiter))

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https://github.com/schwarzit/api-linter-service

RESTful service to provide API linting as-a-service

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https://github.com/gemyago/apigen

HTTP API Layer Generator for the Go (golang) projects

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https://gitlab.com/vstconsulting/vstutils

Small framework for easy generates web-applications (SPA or Single Page Application).

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https://github.com/stackql/openapisaurus

Deno based openapi document utility for splitting openapi spec and generating stackql providers

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https://github.com/apiboard/php-openapi

OpenAPI Specification parser for PHP 8. Supports both OAS 3.0 and 3.1.

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https://github.com/SAP-archive/hana-enterprise-search-engine

Sample application exposing SAP HANA search features as HTTP-REST services.

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https://github.com/cugu/swagger-go-chi

Generate a go-chi server from swagger

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https://github.com/shfc/umeng-openapi-sdk

Umeng OpenAPI SDK for Go

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https://github.com/kompendium-ano/api-factom

Haskell REST client & server for Factom Open API specification

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https://github.com/oracle-japan/ochacafe-microprofile-demo

Helidon 4.x (= Virtual Thread版) に更新しました // MicroProfileとHelidon拡張機能のデモです - 随時新機能を追加してメンテナンスしています.

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https://github.com/larsbergqvist/sr-traffic

A traffic messages app with data from the Open API of Swedish Public Radio. Uses Angular, OpenLayers / OpenStreetMap and PrimeNG.

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https://github.com/theogravity/fastify-starter-turbo-monorepo

A starter project for building an API service using Fastify v5, kysely / postgres, turbo, and pnpm with sample tests and OpenAPI endpoint / database generators to help you build quickly

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https://github.com/microfocus/swagger-ui

https://microfocus.github.io/swagger-ui/

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https://github.com/liveoaklabs/terraform-provider-readme

⛭ Terraform Provider for the ReadMe.com API

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https://github.com/criteria-labs/criteria-api-tools

Tools for working with the JSON Schema and OpenAPI specifications.

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https://github.com/dsietz/actix-web-openapi

Contract testing of an OpenAPI document for REST service running on Actix Web

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https://github.com/icewhaletech/icewhale-openapi

OpenAPI and API Document of ZimaOS and CasaOS

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https://github.com/hasanqq/openapi-starter

API documentation boilerplate for redoc (OpenAPI) with some extra features like automatically generated postman collection.

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https://github.com/dogada/microchain

Simple blockchain prototype with API

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https://github.com/romain-gilliotte/spectral

Capture web traffic while browsing, then let an LLM analyze it into OpenAPI specs, GraphQL schemas, and ready-to-use CLI configs with auth

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https://github.com/nya1/ts-api-boilerplate

Quickly bootstrap your next TypeScript REST API project. Node 16+, auto OpenAPI, Prettier+ESLint, Jest

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https://github.com/gobenpark/kinvest-go

한국투자증권 golang api

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Last synced: 02 Feb 2026

https://github.com/cdimascio/gin-openapi

Automatically validates API requests against an OpenAPI 3 spec.

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https://github.com/prithivsakthiur/strangerai

Turning Ideas to Product - StrangerAI - StrangerZone. Recommended to Deploy inside Huggingface Spaces SDK as GRADIO

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https://github.com/jayanttripathy/chatgpt-integration

ChatGPT Integration in ASP.Net Core using OpenAI

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https://github.com/ychengcloud/cre

根据数据库表结构生成代码 Code generator via database ( crud, grpc, restful, openapi...)

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Last synced: 14 Feb 2026

https://github.com/open-solid/open-api-bundle

OpenAPI Symfony Bundle

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Last synced: 05 Jul 2025

https://github.com/lifailon/selenium-modules

Modules for free use (without using API) ChatGPT, Text Translation and SpeedTest.

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Last synced: 13 Aug 2025

https://github.com/zchee/protoc-gen-openapi

protoc-gen-openapi is a plugin for the Google protocol buffer compiler to generate openAPI V3 spec for any given input protobuf.

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Last synced: 29 Oct 2025

https://github.com/zchee/schema

Collection of JSON-Schema, OpenAPI, and well-known schemas

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https://github.com/request-dl/swift-openapi-request-dl-nio

RequestDL (SwiftNIO) transport for Swift OpenAPI Generator.

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https://github.com/badsyntax/mailinabox-api

HTTP client SDK's for the Mail-in-a-Box API.

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Last synced: 20 Mar 2025

https://github.com/stackql/stackql-azure-openapi

Generates a single OpenAPI document for each Azure Resource Manager service from a set of OpenAPI specifications sourced from Azure REST API specs

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Last synced: 08 Aug 2025

https://github.com/alexplusde/search_it_with_gpt

Gibt via Open-API angepassten GPTs von OpenAI die Möglichkeit, Suchergebnisse von Search It abzurufen.

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https://github.com/lzehrung/zod-express-openapi-routes

POC for cozy API validation, typing, and OpenAPI/swagger schema generation with Zod and Express

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https://github.com/stfalcon-studio/swaggerbundle

:package: Creates a Swagger-ui page in Symfony application.

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https://github.com/aerabi/express-ts-swagger-docker

Express.js Backend with TypeScript, Swagger UI, and Docker Compose

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Last synced: 10 Apr 2025

https://github.com/muniftanjim/express-zod-openapi

Express + Zod + OpenAPI

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Last synced: 13 Apr 2025

https://github.com/numberfour/openapi-scala

An opinionated library and SBT plugin for generating Scala code from OpenAPI 3.

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https://github.com/nickheap2/add-props-flipflop

Toggle additionalProperties in an OpenAPI spec

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https://github.com/muniftanjim/express-joi-openapi

Express + Joi + OpenAPI

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https://github.com/mimicry-tech/openapi_validator

A small wrapper for validating OpenAPIv3 schemata in plain elixir

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https://github.com/bcgov/gwa-cli

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https://github.com/jcrqr/octono

🍂 GitHub REST API for Deno projects

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https://github.com/opvious/abaca

OpenAPI TypeScript SDK generator with strong type guarantees and minimal boilerplate

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https://github.com/supermodel/supermodel-cli

Boring data modeling

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https://github.com/chrimle/openapi-to-java-records-mustache-templates

Generate Java Records from OpenAPI Specifications

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Last synced: 13 Mar 2026

https://github.com/shopstic/k8s-ts

Deno / TypeScript Kubernetes client

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https://github.com/franz-see/swagger-codegen-micronaut-generator

Template to Generate Micronaut-based server side java application from a swagger/openapi specification

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https://github.com/chandrikadeb7/go-couchbase-microservice

Go Microservice developed using Go Echo API Server OpenAPI with Couchbase backend

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https://github.com/bububa/kwai-openapi

快手openapi golang sdk

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Last synced: 04 Sep 2025

https://github.com/smallstep/smallstep-python

A Python client library for the Smallstep API

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https://github.com/karenetheridge/openapi-modern

Validate HTTP requests and responses against an OpenAPI v3.1 document

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https://github.com/surrealdb/openapi

The OpenAPI specification for the SurrealDB HTTP API

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https://github.com/bleemeo/bleemeo-go

Bleemeo Go SDK

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https://github.com/deepakbhalla/springboot-postgres-jsonb-jpa

Spring boot application to demonstrate the JSONB data type to be used in Postgre SQL database using Springboot JPA.

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Last synced: 04 Mar 2026

https://github.com/wolfeidau/realworld-aws-api

This project illustrates how to build an API in AWS using Go.

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https://github.com/ldej/swagger-go-example

An example setup for generating swagger docs using go-swagger and swaggo. Read the blog post for details!

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https://github.com/classchartsapi/api-docs

Unofficial documentation for the Classcharts API

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https://github.com/thim81/spec-driven-openapi-contract-performance-testing

POC for Unlocking the Power of Spec-Driven API Development

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https://github.com/vihuvac/go-openapi-validator

Framework-agnostic OpenAPI v3 validator for Go. High-performance validation of requests (body, params, headers) and responses. Supports net/http, Gin, and Gorilla Mux. Includes zero-config Swagger UI, custom errors, and zero external test deps. Lean, reliable, production-ready.

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https://github.com/acdh-oeaw/openapi4restxq

A BaseX port of openapi4restxq https://gitlab.gwdg.de/subugoe/openapi4restxq

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https://github.com/saritasa-nest/saritasa-s3-tools

Tools For S3 Used By Saritasa

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Last synced: 07 Apr 2025

https://github.com/zihantype/poem-extensions

为Poem框架添加扩展功能 -- Add some extensions to Poem web framework

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https://github.com/wy-z/tspec

Parse golang data structure into json schema.

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https://github.com/ekkinox/bazel-demo

Golang + gRPC + Protobuf + Bazel demo

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https://github.com/rai-gaurav/mojo_react_app

Mojolicious ❤ React

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https://github.com/0xtheprodev/spring-clean-example

Clean Architecture Example with Spring Framework (Java)

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https://github.com/paficent/roblox-api-tracker

This repository tracks changes made to Roblox's Web Api Documentation. Checks for changes every 15 minutes

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https://github.com/istreamlabs/rest-api-lint

REST API linting using OpenAPI and Spectral

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https://github.com/larsbergqvist/sr-app

An Angular application that uses the Open API of the Swedish Public Radio for playing live streams, searching/playing old episodes and viewing playlists and songlists.

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https://github.com/microcks/microcks-testcontainers-node-nest-demo

NestJS demonstration app on how to use Microcks Testcontainers in your dev/test workflow

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https://github.com/enzonotario/apidocs.ar

Documentaciones de APIs

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https://github.com/k6a/openapi-spec-apple-app-store-server

Unofficial, community maintained OpenAPI specification for Apple App Store Server API.

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https://github.com/ecube-labs/koa-x-router

`koa-x-router` is a library that extends the functionality of `@koa/router` by providing validation and automatic API documentation features. It simplifies the process of defining routes, validating request data, and generating API documentation.

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