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: 2026-04-05 00:18:14 UTC
- JSON Representation
https://github.com/libninjacom/postman-ts
Postman client, generated from the OpenAPI spec
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https://github.com/libninjacom/petstore-go
Petstore client, generated from the OpenAPI spec
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https://github.com/ningenme/mami-interface
θΆ£ε³ιηΊ all-interface (product name: mami)
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https://github.com/danhunsaker/openapi2siege
A simple tool to convert your OpenAPI spec(s) to one or more Siege URL files
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https://github.com/omermecitoglu/openapi-interface-generator
OpenAPI interface generator
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https://github.com/bcrikko/openapi-typed-client
Type-safe API client using OpenAPI-like schema
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https://github.com/alfarseniko/ai-accountability
An attempt at a Headstarter AI Fellowship Hackathon. This is an app that is meant to use the OpenAI API to help you with your accountability goals.
firebase material-ui nextjs openai openapi
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https://github.com/vicjun22/contract-first-with-swagger_spring-boot
This repository demonstrates how to integrate Swagger into a Spring Boot project to generate API documentation.
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https://github.com/dweber019/spring-sleuth-example
With OpenApi, RestTemplate and request logging
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https://github.com/sukkola/openapiv3-filter
Cli tool for filtering openapi v3 documents
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https://github.com/gabireze/password-generator-api
A flexible and well-structured API for generating secure passwords, built with NestJS. It allows customization of character types, quantity, and output format (JSON, XML, YAML, CSV, text, or HTML).
api csv customizable generator html json just nestjs nestjs-backend openapi password password-generator secure supertest swagger xml yaml
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https://github.com/mreiche/marketstack-openapi
Generated OpenAPI for Marketstack
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https://github.com/soenneker/soenneker.coinbase.openapiclients.cdp
A Coinbase .NET client generated from their OpenAPI schema, updated daily
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https://github.com/jdifool/tempest-openapi-tools
OpenAPI specification generator and interactive documentation UI for the Tempest framework.
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https://github.com/nikitakumawat/weather-app.github.io
Weather app using ReactJS and GraphQL
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https://github.com/azmisahin/azmisahin-software-web-service-rest-postgrest-heskell-v1
Restfull API with OpenApi support, using authentication mechanisms such as JWT, fast integration with devops environments, using powerful postgresql database features
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https://github.com/lambda-feedback/evaluation-function-api
OpenAPI Specification and Validation Schemas for the Evaluation Function API
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https://github.com/alexandrelamberty/sentinel-api-spec
:diamond_shape_with_a_dot_inside: Home Automation and Monitoring IoT Software API Specification.
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:seedling: Gardening Planner API Specification.
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https://github.com/alexandrelamberty/nasa-neows-api-spec
:rock: NASA Near Earth Object Web Service API Specification.
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https://github.com/mozilla-releng/tooltool
Tasks in the RelEng infrastructure and make use of generic binary artifacts, which are stored in dedicated artifacts repositories (S3 buckets). ToolTool application provides an interface to those artifacts repositories.
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https://github.com/karurochori/base-blockchain
Barebone blockchain node defined by OpenAPI specs with simulation support.
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https://github.com/swooby/openai-openapi-kotlin
OpenAI OpenAPI Specification - Kotlin
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https://github.com/rickyli79/egg-openapi-router
init `router` and connect `controller` by Openapi-doc. validate the request and response by Openapi-doc
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https://github.com/simon-gardier/inventory-flutter-dotnet-app
MyVentory is an app/website built in Flutter with a backend written in Dotnet, hosted on Openshift and developped with modern CI/CD standards
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https://github.com/yevheniidatsenko/goit-pythonweb-hw-08
π Hometask - FullStack Web Development with Python (FastAPI | REST API | CRUD)
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https://github.com/jenky/swagger-example
Swagger 3 (OpenApi) example
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https://github.com/dharshan-kumarj/pingstream
Pingstream is a lightweight, Streamlit-based API testing tool using curl under the hood. Designed for low-RAM systems, it supports GET, POST, PUT, DELETE with JSON, headers, file uploads, and Postman/OpenAPI import.
api-testing-tool curl developer-tools json lightweight linux-tools low-memory openapi postman-alternative productivity python python3 rest-api streamlit
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https://github.com/vanillazen/stl
Simple todo list as a simple service orchestration reference
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https://github.com/libninjacom/dhl-rs
Dhl client, generated from the OpenAPI spec
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https://github.com/dbiesecke/xsoar-integration-internetdb
Simple Integration for the free InternetDB-API
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https://github.com/andrew-boutin/about-auth-service
All about an auth service for fun.
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https://github.com/idelsink/ikea-openapi
π¦ OpenAPI specifications for various IKEA APIs
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https://github.com/nicksp/rest-api-starter
Production-grade REST API starter template
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https://github.com/leozqin/laridae
A registry and proxy server for agentic tool-calling
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https://github.com/kevinoid/appveyor-swagger-java
AppVeyor REST API Client (from Swagger, in Java)
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https://github.com/soenneker/soenneker.swashbuckle.intellenumschemafilter
A Swashbuckle Schema filter for Intellenum
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https://github.com/charvi-rajput/memeapi
Open API/ Swagger generated Mene API Reference Documentation (sample)
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https://github.com/fern-api/action-postman-sync
A GitHub Action for updating a Postman Collection within a Workspace
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https://github.com/adithej/image-wordy
π¬ AI Chatbot for image and text analysis Β Β
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https://github.com/pschichtel/betterswagger
A new code generator for OpenAPI 3 specs
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https://github.com/simplicitesoftware/module-openapitools
OpenPAI / Swagger tools for the SimplicitΓ© low code platform
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https://github.com/liamvnastoria/anime-sama
The Anime-Sama Renew Interface Project
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https://github.com/skygenesisenterprise/giteria
The Code Giteria platform
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https://github.com/kronyxgames/lesyria-launcher
The Official Lesyria Launcher App Electron
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https://github.com/skygenesisenterprise/lyscode-website
The LysCode.com Website
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Last synced: 30 Dec 2025
https://github.com/vaelixbank/vaelix-admin
Vaelix Admin local Panel
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Last synced: 22 Sep 2025
https://github.com/sajith4u/gazettequery
RAG based application for analyzing Sri Lankan government gazette files
Last synced: 30 Jul 2025
https://github.com/libninjacom/bump-rs
Bump.sh client, generated from the OpenAPI spec
Last synced: 08 Oct 2025
https://github.com/mrnicolass/v2com-library-training-backend
It's a simple API project of a library concept made to learn some of Quarkus, PostgreSQL and Docker.
docker flyway-migrations java openapi postgresql quarkus
Last synced: 30 Dec 2025
https://github.com/divanvisagie/go-inventory-tracker
An example of a swagger first API for tracking inventory items
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https://github.com/alexandrelamberty/macellum-api-spec
:shopping_cart: Grocery Management System API Specification.
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https://github.com/hyesungoh/dino_history
likelion 8th project
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https://github.com/toliyansky/openapi-spring-generator-example
Example for dev.to article
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https://github.com/amerahmed222/mcptools
A command-line interface for interacting with MCP (Model Context Protocol) servers using both stdio and HTTP transport.
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https://github.com/sergey-prudentdev/siteinformant-openapi
Official OpenAPI specification for the Site Informant public JSON API β website uptime, response-time, and SSL monitoring data for developers and AI integrations.
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https://github.com/gvozdenkov/impress-place-backend
Photo sharing service / backend
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https://github.com/nullbeam/example-node-ts
Example - Node JS application with Typescript and OpenAPI
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https://github.com/go-api-libs/ipify
Go library for the ipify API. A simple public IP address API, easy to integrate into any application in seconds.
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https://github.com/bas-kirill/muse-project
[Muse Group] Frontend Academy
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https://github.com/serafin-labs/open-api
Open Api 3 typescript types definition
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https://github.com/excalibase/excalibase-rest
Auto-generates REST APIs from your database with Spring Boot. It supports CRUD, filtering, relationship expansion, batch ops, and OpenAPI docs β no boilerplate required.
api-generation auto-generated-api crud-operations database-api database-to-api filtering java low-code lowcode maven openapi postgresql relationship-expansion rest-api schema-discovery spring-boot swagger
Last synced: 30 Dec 2025
https://github.com/dkirrane/ibm-openapi-validator-docker
Docker Image for https://github.com/IBM/openapi-validator
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https://github.com/youhad08/e-bank-backend-springboot
Digital banking system backend developed with Spring Boot. Includes customer and account management, operations, and REST APIs.
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https://github.com/drakkar-software/pennylane-openapi-clients
Pennylane api client. Only typescript for now
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https://github.com/alanfredyansyah/microgateway-running-example
Running example of Airlock Microgateway, a Kubernetes-native WAAP (Web Application and API Protection) solution
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https://github.com/dzxyqz/hono-steamer-api
β‘ High-performance Steam profile resolver API with MySQL-powered smart caching system | Built with Hono & TypeScript π
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https://github.com/ningenme/geeq
frontend and backend for geeq webapp
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https://github.com/ddonamaria/price-service
[technical test] - This is a microservice for managing prices
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https://github.com/doodlescheduling/swagger-hub-controller
Kubernetes controller for managing swagger UI
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https://github.com/grab/grabfood-api-sdk-go
Go API client for GrabFood
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https://github.com/mermade/api-registry
Own-label API registry which powers APIs.guru
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https://github.com/wacko1805/victorian-covid-stats
An open API of COVID statistics in Victoria, Australia. The data is ripped from coronavirus.vic.gov.au
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https://github.com/stevepartridge/service
A Go service package to serve grpc, grpc-gateway, and additional http handlers on a single port
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https://github.com/dev-ricks/fleetops-api
Richard Smit: Senior Backend Engineer β Java 17, Spring Boot, OAuth2/JWT, Postgres, CI/CD, System Design
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https://github.com/shade-sdev/forumnation
Web Application built with Quarkus.
cdi hibernate java liquibase lombok mapstruct multi-module onion-architecture openapi panache-repository postgres quarkus yaml
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https://github.com/majid-l/swagger-ui-docs
Swagger UI constructed using an OpenAPI Specification document containing the definition for an e-commerce RESTful API service that I've created.
Last synced: 08 Nov 2025
https://github.com/romanow/aggregator-by-tags
OpenAPI aggregator by Tags
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https://github.com/curegit/stylegan-fastapi
Simplified Web REST API of the StyleGAN using FastAPI
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https://github.com/soenneker/soenneker.hubspot.client
An async thread-safe singleton HubSpot HTTP client
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https://github.com/tanjubozok/demoprojectserver
Clean Arhictecture, DDD
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https://github.com/lepetitbloc/swagger-editor
Configurable live reloaded swagger-editor instance.
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https://github.com/battis/openapi-client.generator
[READ-ONLY] Generate a PHP client for a RESTful API from its OpenAPI description file
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https://github.com/lugudu/openapi-ejemplo
Autogeneracion de APIs en Spring con OpenAPI
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https://github.com/yuno-obsessed/spring-coursework
pet-clinic app using spring boot
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https://github.com/ucl/isenseflu-openapi
OpenAPI Definitions for i-sense flu API
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https://github.com/antoniojvargas/smartcar
A Node.js and Express API that simulates Smartcar vehicle endpoints, including vehicle info, doors, fuel, battery, and engine control. Includes Swagger (OpenAPI) documentation and unit tests with Mocha, Chai, and Sinon.
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https://github.com/driimus/oasin
Easily combine APIs from openapi-generated TypeScript client libraries
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https://github.com/go-api-libs/freepublicapis
Go library for the Free Public APIs API. The Free Public APIs API provides up-to-date information on every free public API listed on freepublicapis.com. Perfect for developers, students and hobbyists. It is limited to 1000 requests a day, if you need more, feel free to reach out.
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https://github.com/paulkakell/resellerapi
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