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: 2026-01-22 00:18:40 UTC
- JSON Representation
https://github.com/0xsirsaif/frappe-api
FastAPI for Frappe
api fastapi frappe openapi openapi3 pydantic pydantic-v2 python swagger-ui
Last synced: 11 Apr 2025
https://github.com/networknt/model-config
A repository contains all model definition and light-codegen config for different frameworks
graphql-idl light-java-graphql light-java-hybrid light-java-rest openapi swagger swagger-specification
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https://github.com/up9inc/oas-diff
OAS 3.1 Validation and Diff CLI Tool
diff golang openapi openapi-spec openapi-specification openapi-validation openapi31
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https://github.com/zuplo-samples/db2openapi
Generate an OpenAPI/Swagger specification from your SQL database
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https://github.com/dilanx/redark
A dark theme for Redoc
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https://github.com/pierre-emmanuelJ/open-alldebrid
Alldebrid OpenAPI based Golang client wrapper
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https://github.com/reprezen/genflow
A unified framework for API code generators that work with OpenAPI, RAPID-ML and other description languages.
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https://github.com/markruler/swage
OpenAPI Specification v2.0 to Excel
oas openapi openapi-specification swagger xlsx
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https://github.com/bpedro/postman-openapi-sync
Postman OpenAPI sync makes sure that your local OpenAPI spec is in sync with Postman.
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https://github.com/bfanger/swagger-explained
Interactive documentation of the swagger.json
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https://github.com/mchangrh/sb-openapi
SponsorBlock API in Swagger/ OpenAPI
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https://github.com/pasan1/spring-boot-3-with-spring-security-and-swagger-ui
Spring Boot 3 project with Spring Security and Swagger UI integrated (with OpenAPI 3)
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https://github.com/osomepteltd/openapi-ts-sdk
Osome TypeScript SDK Generator
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FastAPI Microservices Architecture SDK - As Basis for multiple services in a platform/system
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https://github.com/imranr98/backdraft
Node.js, Express, and PostgreSQL based web server with simple user authentication, to be used as a template or starting off point for backend projects.
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https://github.com/vaso991/koa-router-zod-swagger
Koa2 validator and swagger generator.
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https://github.com/projectsyn/lieutenant-api
The Project Syn Kubernetes Cluster and Tenants Inventory API
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https://github.com/rubrikinc/api-documentation
API documentation for the Rubrik Cloud Data Management (CDM) platform
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https://github.com/oliveira-michel/jhulis
Sistema (lib + REST APIs) para validação de boas práticas na construção de contratos de API em OpenAPI Specification.
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https://github.com/paddlehq/paddle-openapi
An OpenAPI description for the Paddle API.
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https://github.com/getyourguide/openapi-validation-java
Build trust in your spec by validating live requests and responses against your OpenAPI spec.
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https://github.com/dankinsoid/swiftopenapi
Swift library which can generate output compatible with OpenAPI 3.1.0
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https://github.com/networknt/openapi-parser
A light-weight, fast OpenAPI 3.0 parser and validator with minimum third party dependencies
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https://github.com/mmf-fe/midway-swagger
OpenAPI(Swagger)规范是一种用于描述 RESTful API 的强大定义格式。 midway-swagger 提供了声明式的 api 及参数验证
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https://github.com/sigpwned/openapi-generator-maven-plugin-template-customization-example
An example Maven project that uses the OpenAPI Generator Maven plugin with template customization to generate an API model and server
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https://github.com/apiaddicts/openapi2soapui
API to generate a SoapUI project from an OpenAPI Specification (fka Swagger Specification) Given an OpenAPI Specification, either v2 or v3, a SoapUI project is generated with the requests for each resource operation and a test suite. The response is the content of the SoapUI project in XML format to save as file and import into the SoapUI application.
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https://github.com/nya1/rest-api-boilerplate
Typescript-based REST API boilerplate with full integration tests
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https://github.com/morriz/itsup
Lean, automated, poor man's infra for lightweight services running in docker.
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https://github.com/simplify-framework/simplify
Simplify Framework (JavaScript) SDK help developers to provision runtime code as a container or lambda, deploy code in the AWS Cloud or Kubernetes. Using your own, pre-defined, tailored, customized, well-written code to deliver project within itself (True-DevOps).
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https://github.com/microsoft/kiota-cli-commons
Common set of commands for CLI client generation
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https://github.com/januarylabs/sdk-it
SDK-IT generates type-safe client SDKs from OpenAPI specifications and creates OpenAPI specs from TypeScript code.
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https://github.com/synx-ai/oas3-mdx
OpenAPI Spec to Markdown
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https://github.com/stcarrez/swagger-ada-todo
Simple todo list server with OpenAPI
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https://github.com/dankinsoid/SwiftOpenAPI
Swift library which can generate output compatible with OpenAPI 3.1.0
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https://github.com/freb97/discofetch
🪩 The fetch client that types itself
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https://github.com/postman-open-technologies/openapi-linter
An open source implementation of Spectral for applying linting rules to an OpenAPI which can be deployed to AWS, Azure, and Heroku.
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https://github.com/speakeasy-api/developer-docs
This documentation is open source. We welcome feedback, suggestions, and PRs
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https://github.com/lepoco/openapi.client
OpenAPI Client is a toolkit that helps you create HTTP clients for external APIs based on their OpenAPI specifications. It simplifies the process of consuming and interacting with various web services.
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Last synced: 12 Apr 2025
https://github.com/paloaltonetworks/docusaurus-template-openapi-docs
Docusaurus template for bootstrapping with docusaurus-openapi-docs
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Last synced: 03 May 2025
https://github.com/nextcloud/openapi-extractor
A tool for extracting OpenAPI specifications from Nextcloud source code
Last synced: 19 Oct 2025
https://github.com/elixir-tesla/tesla_openapi
Experimental client generator from OpenAPI spec.
Last synced: 09 Apr 2025
https://github.com/andreugallofre/foodlord
🥑 Calories estimation using CV built in HackCU V
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https://github.com/armsnyder/openapi-language-server
OpenAPI language server for LSP compatible code editors
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https://github.com/wantedly/open_api
Provide PORO and serializers for OpenAPI v3.0.1
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https://github.com/elasticemail/elasticemail-python
ElasticEmail - the Python library for the Elastic Email REST API
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https://github.com/dermanomann/openapi-verifier
Verify JSON (api response) against OpenAPI specification.
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https://github.com/dreamshive/open-swagger
Modern Swagger/OpenAPI integration for AdonisJS v6 with Scalar UI
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https://github.com/straw-hat-team/nodejs-monorepo
Monorepo for the open-source packages
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https://github.com/kevinoid/swagger-spec-validator
Validate an OpenAPI/Swagger API specification using the swagger.io online validator.
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https://github.com/swaggest/swac
🤖 OpenAPI/Swagger client generator for PHP, Go and JavaScript (ES5)
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https://github.com/hslatman/caddy-openapi-validator
A Caddy HTTP handler for validating requests and responses against an OpenAPI specification
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https://github.com/namuan/fuzzy-swagger
API fuzz testing generator using swagger document.
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https://github.com/simioni/nest-standard-response
Standardized and configurable API responses for NestJS
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https://github.com/jaxelr/nancy.metadata.openapi
Open Api Spec library for NancyFx
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https://github.com/narazaka/swagger-dsl
Swagger (OpenAPI 3) DSL for Ruby
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https://github.com/rmkasendwa/swagger-to-ts
swagger-to-ts is a powerful library that allows you to generate TypeScript code from Swagger documentation or OpenAPI specifications. It simplifies the process of integrating API definitions into your TypeScript projects, saving you time and effort.
api api-client generator openapi proxy swagger tsed typescript
Last synced: 04 Oct 2025
https://github.com/avanov/openapi-client-generator
Generates Python client packages from OpenAPI v3 specifications. The project aims at supporting any generic valid specification.
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https://github.com/ahmadnassri/node-oas-fastify
OAS 3.0 to Fastify routes automation
Last synced: 11 Apr 2025
https://github.com/trivedi-khushi/openapi-sample-library
Curated library of 20+ real-world API examples with request/response schemas and CI automation for docs generation
apis docker documentation good-first-issue hacktoberfest oas openapi openapispecification redoc-cli restapi swagger-ui webapi
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https://github.com/fusionauth/fusionauth-openapi
FusionAuth OpenAPI specification
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https://github.com/mjovanc/rust-actix-example
RESTful API written in Rust + Actix etc.
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https://github.com/vereinfacht/vereinfacht
Web‑based club management platform, designed to digitize core organizational tasks for nonprofit and volunteer-based associations.
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Last synced: 06 Aug 2025
https://github.com/mockloop/mockloop-mcp
Intelligent Model Context Protocol (MCP) server for AI-assisted API development. Generate mock servers from OpenAPI specs with advanced logging, performance analytics, and server discovery. Optimized for AI development workflows with comprehensive testing insights and automated analysis.
ai api feedback-loop llm mcp mcp-server mcp-servers mock mocking-server mocking-utility models openapi swagger training training-data
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https://github.com/FusionAuth/fusionauth-openapi
FusionAuth OpenAPI client
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Last synced: 09 Jul 2025
https://github.com/linux-china/aliyun-openapi-rust-sdk
Aliyun OpenAPI SDK for Rust
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https://github.com/egomobile/swagger-ui-cli
A standalone CLI application, serving Swagger UIs via a HTTP server.
cli json nodejs openapi rest-api swagger toml typescript yaml
Last synced: 10 Jul 2025
https://github.com/shavo007/k6-demo
demo perf tests using k6 and OAS (open api spec)
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Last synced: 23 Jun 2025
https://github.com/mrmoeinm/aspnetcore.rapidoc
Middleware to expose an embedded version of the RapiDoc from an ASP.NET Core application
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Last synced: 10 Oct 2025
https://github.com/fleny113/endpointmapper
Endpoint Mapper for ASP.NET Core 8
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Last synced: 08 May 2025
https://github.com/valgene/valgene-cli
Multi language validation code and DTO generator from OpenAPI specification.
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Last synced: 23 Oct 2025
https://github.com/scottlogic/openapi-forge
⚒️🔥 Effortlessly create OpenAPI clients, in a range of languages, from the fiery furnace of our forge
Last synced: 28 Jul 2025
https://github.com/ybelenko/oauth2_as_oas3_components
OAuth2 definitions as OpenAPI Spec 3.0 components
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Last synced: 07 May 2025
https://github.com/cameronking4/notion-openapi-chatgpt-action
NotionGPT - Create a custom GPT action that calls the official & latest Notion API. Unlock the power of custom GPTs and access your Notion workspace in ChatGPT with natural language. Push and Pull Content from Your Notion with ChatGPT 🔥.
gpt gpt-action gpt-actions gpteezy notion notion-api openai openapi yaml
Last synced: 19 Apr 2025
https://github.com/vrerv/openapi-markdown
Convert openapi spec to markdown file
Last synced: 12 Apr 2025
https://github.com/opendatach/openparldatach
We are collaboratively building an open standard and API for Swiss parliamentary data.
api ogd oparl open-standard openapi opendata opendata-api parliament parliament-data parliamentary-data parliamentary-monitoring standard switzerland
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https://github.com/theirish81/mockambo
Dynamic API Mocking, recording and Validation
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https://github.com/nicolastakashi/todoapp-openapidocuments
Examples used in the post published on Medium.
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https://github.com/beezup/dotnet-codegen
Code Generator as a dotnet global tool
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https://github.com/stackql/stackql-registry-docs
StackQL provider documentation for cloud and SaaS providers available in the StackQL Provider Registry, built with Docusaurus.
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https://github.com/loopbackio/loopback-connector-openapi
LoopBack connector for OpenAPI spec (2.0 and 3.0.x) compliant services
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https://github.com/apiaddicts/sonar-openapi
Evaluation engine for OpenAPI/Swagger API definitions in SonarQube
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https://github.com/felixarpa/unstuckoverflow
🤷♀️ Chrome ext to help devs built in HackTheBurgh V
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https://github.com/sap/openapi-specification
The SAP's extension to OpenAPI Specification defines a standard for describing HTTP APIs at SAP.
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https://github.com/thecodedaniel/flutter_gpt
A flutter app embedded with OpenAI ChatGPT!
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Building RAG With OpenAI GPT-4o(omni) Model Using Objectbox Vector Database
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https://github.com/koshevy/oapi3codegen
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