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: 2026-06-26 00:18:49 UTC
- JSON Representation
https://github.com/lams-epfl/gen-rest
A tool to generate automatically OpenAPI specification from a service model
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Last synced: 30 Jan 2026
https://github.com/osodevops/akka-openapi-maven-plugin
Maven plugin to generate OpenAPI 3.1 specifications from Akka SDK HTTP endpoint annotations
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https://github.com/abelpz/clickup-wrapper
ClickUp API wrapper for Javascript
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https://github.com/thenorthmemory/dubbo-swagger
the dubbo rpc services and the swagger integration
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https://github.com/boywithkeyboard-archive/vultr-api-client
A preconfigured, up-to-date OpenAPI client for Vultr.
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Last synced: 19 Jan 2026
https://github.com/seaguntech/seaguntech-node-api-template
☁️ NestJS REST API template with TypeScript, Prisma, Redis auth, OpenAPI/Swagger, and Vitest testing. Production-ready with CI/CD, Docker, and modular architecture.
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https://github.com/devsujay19/nasa-eye
This is a web project with simple HTML, CSS and JavaScript where I used NASA's Image Library API to fetch images from the Databases of NASA and show them in a `div`.
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https://github.com/omermecitoglu/next-openapi-interface-generator
OpenAPI interface generator for Next.js
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https://github.com/drakkar-software/coingecko-openapi-clients
Coingecko api client. Only typescript and python for now
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https://github.com/valentinusz/asp.net-workout-tracker-api
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https://github.com/weitaishan/schemato
Free browser-only schema converter — 10 inputs × 15 outputs = 149 conversions. JSON, JSON Schema, OpenAPI, GraphQL, SQL, Protobuf, Prisma → TypeScript, Zod, Pydantic, Go, Rust and more.
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https://github.com/strataljs/stratal
A modular framework for building Cloudflare Workers with dependency injection, OpenAPI documentation, queues, cron jobs, and more.
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https://github.com/jacoblincool/api-spec.pages.dev
📚 Show OpenAPI Spec with pre-rendered title and description. No CORS headers are required. Support SwaggerUI and RapiDoc.
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https://github.com/reloxx13/ddev-swagger-ui
Swagger UI add-on for DDEV
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https://github.com/borisprogrm/go-leaderboard-server
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https://github.com/rocket-org-imdeepmind/swaggerweb
RocketSwagger is a hosted Swagger UI instance that allows users to visualize and interact with OpenAPI documentation.
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https://github.com/blueconic/openapi
BlueConic REST API v2
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https://github.com/boywithkeyboard-archive/digitalocean-api-client
A preconfigured, up-to-date OpenAPI client for DigitalOcean.
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https://github.com/tiago-marques/x-openapi-flow
OpenAPI describes APIs. _________ x-openapi-flow describes how they actually work: for developers and AI.
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https://github.com/smartrecruiters/openapi-schemas-validator
Schema validators for api documentation in OpenAPI Specification 3.x format.
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https://github.com/bzdgn/open-api-web-service-example
Demo Project for Open API Web Service with Spring Boot
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https://github.com/cubahno/specs
Collection of different OpenAPI specs for testing purposes
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https://github.com/profcomff/api-uilib
API wrappers, autogenerated from openapi.json files
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https://github.com/falberthen/koalesce
Koalesce is a .NET distributed library that coalesces multiple OpenAPI definitions into a single document.
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https://github.com/orliluq/trivia
🎃 Backend Challenge (Java): API para una trivia de Halloween! 🎃
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https://github.com/levinine/functional-tests
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https://github.com/rawtoast/zenko
Bun-first TypeScript generator for OpenAPI schemas using Zod for type-safe helper functions
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https://github.com/inyourtime/hapi-scalar
Hapi plugin that serves API documentation using Scalar, with built-in support for hapi-swagger.
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https://github.com/twitech/graph-modelling-and-community-detection
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https://github.com/kemingy/offapi
OpenAPI template files for offline usage.
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https://github.com/albenik/twirp-openapi-gen
A Twirp RPC OpenAPI generator implemented as `protoc` plugin
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https://github.com/aklinker1/zeta
Composable, testable, OpenAPI-first backend framework with validation built-in
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https://github.com/juliacomputing/openpolicyagent.jl
Julia OpenPolicyAgent Client, Server and CLI.
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https://github.com/dacr/web-echo
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https://github.com/sensiblewood/swaggerui-webpack-boilerplate
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https://github.com/moneymeets/spec2sdk
Generate Pydantic models and API client code from OpenAPI 3.x specifications
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https://github.com/houllette/elixir-sdk-generator
Production-ready GitHub template for generating Elixir SDKs from OpenAPI specs with automated regeneration, connection pooling, retries, and comprehensive testing.
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https://github.com/bump-sh-examples/rails-code-first
Add OpenAPI powered documentation to your Rails API with RSwag.
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https://github.com/jonasbn/perl-mojolicious-plugin-openapi-tutorial-parameters
Yet another tutorial for Mojolicious::Plugin::OpenAPI: Parameters
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https://github.com/douglasvolcato/golang-api-template
A premade template for building rest apis fast and easy using Golang.
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https://github.com/azapata27/ai-integration-springai
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https://github.com/openchargingcloud/ocpiexplorerwebapp
An OCPI Explorer as a Web App
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https://github.com/zeuz8/chatbotix-back-end
Building an interactive AI chatbot powered by the OpenAI API using React, designed to engage in natural conversations and provide intelligent responses.
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https://github.com/codecentric/reedelk-openapi
OpenAPI v3 JSON/YAML serializer/deserializer
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https://github.com/grandlinex/docs-to-openapi
This Project converts comments in your code or in your dependencies to an OpenApi Spec.
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https://github.com/ergintiravoglu/minimalapismovies
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https://github.com/angellusmortis/boundlexx-ui
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https://github.com/mauricio-dolinski/financeiro-api
API Gerenciamento Financeiro (Back-end) - Tecnologias: Quarkus, Hibernate, MySQL, Java
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https://github.com/pierrialexandervidmar/apibasic-dotnet
Api .NET 8.0 com CRUD básico (ASP.NET CORE).
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https://github.com/apiaddicts/openapi-example-aggregator
Project open source financed by Madrid Digital (Spain) and CloudAPPi S.L and promoted by APIAddicts. This proyect Generate examples for openapi3.0 using the responses schemas.
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https://github.com/ripta/openapi-promop-crd-hack
(HACK) Generating an OpenAPI Schema to get proper $ref in Prometheus Operator's CRDs
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https://github.com/codeasashu/oas.nvim
Openapi support in neovim
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https://github.com/readmeio/oas-reducer
Reduce an OpenAPI definition into a smaller subset.
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https://github.com/hyunjung-choi/seoul-public-library
🏛 서울시 공공도서관 찾기
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https://github.com/mikaeldui/openapi-dotnet-extensions
Extensions for Microsoft.OpenApi.
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https://github.com/corrreia/homelab-agent
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https://github.com/rkojedzinszky/django-tastypie-openapi
Generate OpenAPI specification for Django-Tastypie API
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https://github.com/collectivecloudperu/app-resume-text-openai-react-bootstrap5
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https://github.com/izubkov/oapi-cli
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https://github.com/planet-a-ventures/morphais-openapi-spec
OpenAPI Specification for Morphais (www.morphais.com)
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https://github.com/grandlinex/swagger-mate
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https://github.com/energy-tracker/public-docs
Public documentation for Energy Tracker
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https://github.com/openapi/openapi-go-sdk
🐹 A fully-featured and blazing-fast Go API client to interact with Openapi®
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📣 ANNOUNCEMENT: The Openapi® OAuth system just got a major upgrade V2.
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https://github.com/alexandrecpedro/bbb22-votation-system
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https://github.com/oapicf/openapi-okta-ip-ranges
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https://github.com/manageiq/kubevirt-sdk-ruby
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https://github.com/tmcheung/arazzo-tools
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https://github.com/speclynx/vscode-openapi-toolkit-website
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https://github.com/matgalv2/shop-app
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https://github.com/openapi/certifications-and-partnerships
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https://github.com/matija2209/payload-plugin-api-guide
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https://github.com/arthur-s/docfinder
Fetch documentation for single endpoint from openapi file
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