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oas

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.

Here are 173 public repositories matching this topic...

OAI / OpenAPI-Specification

The OpenAPI Specification Repository

rest openapi apis oas webapi openapi-specification

Updated Mar 13, 2026
Markdown

swagger-api / swagger-ui

Swagger UI is a collection of HTML, JavaScript, and CSS assets that dynamically generate beautiful documentation from a Swagger-compliant API.

open-source rest rest-api swagger openapi swagger-ui oas hacktoberfest openapi-specification swagger-api openapi3 swagger-js openapi31 swagger-oss

Updated Mar 13, 2026
JavaScript

prism

stoplightio / prism

Turn any OpenAPI2/3 and Postman Collection file into an API server with mocking, transformations and validations.

cli prism mock-server swagger http-proxy openapi mocking oas api-testing hacktoberfest postman-collection openapi3 stoplight-oss

Updated Mar 3, 2026
TypeScript

APIs-guru / openapi-directory

🌐 Wikipedia for Web APIs. Directory of REST API definitions in OpenAPI 2.0/3.x format

api aws azure rest-api opendata swagger openapi google-api oas api-catalog openapi3 api-directory openapi-definitions

Updated Aug 28, 2025

runhey / OnmyojiAutoScript

Onmyoji Auto Script | 阴阳师脚本

script oas onmyoji

Updated Mar 13, 2026
Python

spectral

stoplightio / spectral

A flexible JSON/YAML linter for creating automated style guides, with baked in support for OpenAPI (v3.1, v3.0, and v2.0), Arazzo v1.0, as well as AsyncAPI v2.x.

json linting json-schema swagger openapi oas hacktoberfest jsonpath openapi-specification openapi3 json-lint oasv3 arazzo stoplight-oss stoplight-spectral

Updated Mar 14, 2026
TypeScript

cam-inc / viron

OAS-driven Frontend-NoCode Administration Console

admin dashboard swagger admin-dashboard oas admin-tools

Updated Nov 12, 2025
TypeScript

vacuum

daveshanley / vacuum

vacuum is the worlds fastest OpenAPI 3, OpenAPI 2 / Swagger linter and quality analysis tool. Built in go, it tears through API specs faster than you can think. vacuum is compatible with Spectral rulesets and generates compatible reports.

Updated Mar 13, 2026
Go

pb33f / libopenapi

libopenapi is a fully featured, high performance OpenAPI 3.2, 3.1, 3.0, Overlays and Arazzo parser, library, validator and toolkit for go applications.

go golang parser diff library swagger openapi oas openapi-spec openapi-specification swagger2 swagger-api openapi3 oasv3 openapi3-validation openapi3-1 openapi31

Updated Mar 14, 2026
Go

APIs-guru / awesome-openapi3

😎 A list of awesome projects related to OpenAPI 3.0.x, curated by the community

api client converter documentation server swagger openapi generation oas openapi3 oas3 oasv3

Updated Mar 14, 2026
JavaScript

apideck-libraries / portman

Port OpenAPI Specs to Postman Collections, inject test suite and run via Newman 👨🏽‍🚀

testing api cli integration-testing swagger openapi test-framework cli-app oas api-testing contract-testing postman-collection testrunner postman-collections cli-option contract-first openai-tooling

Updated Feb 28, 2026
TypeScript

yonaskolb / SwagGen

OpenAPI/Swagger 3.0 Parser and Swift code generator

swift cli yaml template parser library formatter generator stencil swagger openapi code-generation oas

Updated Dec 4, 2023
Swift

python-openapi / openapi-spec-validator

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.

python validation python-library swagger openapi specification oas openapi3 openapi2 oas3 openapi31

Updated Mar 12, 2026
Python

python-openapi / openapi-core

Openapi-core is a Python library that adds client-side and server-side support for the OpenAPI v3.0 and OpenAPI v3.1 specification.

python client schema server python-library swagger openapi oas openapi3 oas3 openapi31

Updated Mar 13, 2026
Python

api-generator

SoliDry / api-generator

PHP-code generator for Laravel framework, with complete support of JSON-API data format

api php jwt laravel generator code-generator state-machine php7 json-api openapi spell-check oas laravel-modules api-generator laravel5 serialize oas3

Updated Aug 8, 2022
PHP

openapi

speakeasy-api / openapi

A set of packages and tools for working with OpenAPI, Swagger, Arazzo and Overlay Specification documents.

Updated Mar 14, 2026
Go

generators

wrannaman / generators

API Generator - instantly generate REST and GraphQL APIs (openapi (OAS) 3.0.0)

nodejs graphql rest generator microservice openapi swagger-codegen mit-license oas api-generator nodejs-development microservice-framework nodejs-server openapi3 oasv3 openapi-generator

Updated Dec 30, 2022
JavaScript

oooas

goldspecdigital / oooas

An object oriented approach to generating OpenAPI specs, implemented in PHP.

open-source swagger openapi oas

Updated Aug 9, 2022
PHP

RESTest

isa-group / RESTest

RESTest: Automated Black-Box Testing of RESTful Web APIs

java testing rest rest-api swagger openapi api-rest oas api-testing

Updated Dec 6, 2025
Java

viclovsky / swagger-coverage

Tool which generates full picture of coverage of API tests based on OAS (Swagger) v2 and v3

coverage swagger oas

Updated Jan 17, 2024
Java

Created by OpenAPI Initiative, Tony Tam, Darrel Miller, Mike Ralphson, Ron Ratovsky, Uri Sarid, Jason Harmon

Released August 10, 2011

Latest release 6 months ago

Followers: 169 followers
Repository: OAI/OpenAPI-Specification
Website: github.com/topics/openapi
Wikipedia: Wikipedia

Related topics

json-schema raml rest-api