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: 2026-07-08 00:22:40 UTC
JSON Representation

https://github.com/fibercrypto/libdart-skycoin

Skycoin client libraries for Dart

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https://github.com/zunda-pixel/niabis-api

NiaBis API

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https://github.com/michealroberts/o3-stack

Hono, OpenAPI & oRPC example backend API

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https://github.com/the-orange-alliance/toa-docs

📄Swagger Docs site hosting The Orange Alliance's OpenAPI Spec

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https://github.com/soenneker/soenneker.netlify.httpclients

A thread-safe singleton HttpClient for Netlify's OpenAPI integration.

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https://github.com/soenneker/soenneker.fastly.httpclients

A thread-safe singleton HttpClient for Fastly's OpenAPI integration.

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https://github.com/nikitadev-work/pr-manager-service

Микросервис, который автоматически назначает ревьюеров на Pull Request’ы (PR), а также позволяет управлять командами и участниками.

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https://github.com/duquejo/quarkus-tokencache-microservice

Resilient-ready external token cacheable service Proof of concept

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https://github.com/nebil175/lcu_dumper

🔍 Discover and extract League Client Update data easily with LCU Dumper, a fast, cross-platform CLI that outputs selected API endpoints to JSON files.

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https://github.com/soenneker/soenneker.trulioo.httpclients

A thread-safe singleton HttpClient for Trulioo's OpenAPI integration.

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https://github.com/aahoughton/oav

HTTP-aware OpenAPI 3.0/3.1/3.2 validator with JSON Schema 2020-12 codegen compiler

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https://github.com/aydanrahimova/linkedinclone

This LinkedIn clone replicates key features of the professional networking platform, allowing users to manage profiles, create posts, comment, react, connect with others, follow organizations, and explore job opportunities. Advanced features include creating organizations and applying for jobs.

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https://github.com/alexandrecpedro/todoapi

ToDo API

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https://github.com/k5ki/oapigen-poc

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https://github.com/nasrmohammad4804/ticket-supporting-system

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https://github.com/swimmwatch/openapi-compare-version

A GitHub Action for comparing OpenAPI specifications version.

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https://github.com/luismendes070/desafio-parcelas

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https://github.com/soenneker/soenneker.together.openapiclient

A .NET client generated from the Together AI OpenAPI schema, updated daily

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https://github.com/skibidi-crypto/quarkus-openapi-problem

Standardized error responses for Quarkus REST APIs using Problem Details (RFC9457)

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https://github.com/soenneker/soenneker.intercom.openapiclient

A .NET client generated from the Intercom OpenAPI schema, updated daily

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https://github.com/rashidintheworld/file-document-restapi

This project contains a collection of services that perform step-by-step PDF creation. It allows users to convert any text in PDF format by setting font, color and RGB properties through a single API. I shared the project on GitHub and am open to development.

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https://github.com/layoric/exampleopenaiplugin

WIP Example OpenAi Plugin support for ServiceStack

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https://github.com/ztrehagem/openapi-to-fastify-schema

Generate schema objects for Fastify from OpenAPI documents

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https://github.com/davidogalo/appointmentscheduler

healthcare appointment scheduling system designed to streamline patient-doctor interactions and medical record management.

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https://github.com/otaviotscha/icarus-bot

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https://github.com/ntrv3390/pdfninja

Say hii to your pdf with pdfNinja

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https://github.com/mrtaz77/pantrypal

PantryPal is a pantry management app to keep track of pantry items by add, remove or update quantities using Next.js, MaterialUI and Firebase

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https://github.com/tryagi/runway

C# SDK based on Runway OpenAPI specification

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https://github.com/abdallahsaber065/openapi-tester-frontend

A clean, user-friendly frontend application for testing any OpenAPI-compliant API dynamically. This tool loads your API specification from OpenAPI JSON files or URLs and provides an intuitive interface for testing all endpoints without needing external tools like Postman.

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Last synced: 09 May 2026

https://github.com/soenneker/soenneker.cohere.openapiclient

A .NET client generated from the Cohere AI OpenAPI schema, updated daily

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https://github.com/axel7083/electron-vite-react-openapi-generator

electron template using openapi-generator for IPCs communication

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https://github.com/soenneker/soenneker.productboard.openapiclientutil

A thread-safe utility for obtaining ProductBoard's OpenApiClient singleton.

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https://github.com/soenneker/soenneker.nws.openapiclientutil

A thread-safe utility for obtaining Nws's OpenApiClient singleton.

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https://github.com/charconstpointer/ihateannotations

Example combining buf, Protobuf, gRPC, gRPC Gateway and OpenAPI

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https://github.com/pccomponentes/documentation-bundle

The documentation bundle manages the required routes and templates in order to show documentation both in OpenApi and AsyncApi formats.

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https://github.com/nikita-volkov/modeliero

Swiss army knife for model code-generation (in beta)

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https://github.com/swooby/openai-openapi-kotlin

OpenAI OpenAPI Specification - Kotlin

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https://github.com/opensourceways/cora

Command collection for all kinds of Services in Open Source Community

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https://github.com/sookwalinga/ask_sam

Web app consuming the openAI GPT3 api. Feel free to "ask sam anything" 😉

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https://github.com/ke4nec/swagger-ui-electron

Wrap Swagger UI with Electron

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Last synced: 13 May 2026

https://github.com/grofei/ps-bconnectopenapi

Powershell module for the baramundi OpenAPI Interface. This module is NOT a product of baramundi software GmbH.

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https://github.com/foospidy/postman-to-openapi-docker

Run postman-to-openapi from a docker container

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https://github.com/roxyapi/postman-collections

Postman collections for astrology, Vedic, tarot, numerology, I Ching, biorhythm, Human Design and more. Auto synced from OpenAPI, one API key.

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https://github.com/h0rv/zchema

Typed, validated JSON APIs and OpenAPI 3.1 for Zig's std.http.Server

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https://github.com/tarundattagondi/mcp-curate

Turn an OpenAPI/Swagger spec into a high-quality, curated MCP server — consolidates endpoints into clear tools and proves it with an eval harness.

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https://github.com/libninjacom/primer-rs

primer client, generated from the OpenAPI spec

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https://github.com/griptape-ai/griptape-cloud-python-client

Python client for Griptape Cloud APIs

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https://github.com/faisalaffan/community-waste-collection-api

REST API for community waste collection — households, pickups, payments, and reports. Built with Go Fiber

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https://github.com/soenneker/soenneker.make.openapiclient

A .NET client generated from the Make OpenAPI schema, updated daily

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https://github.com/subzeroid/hikerapi-mcp

MCP server for HikerAPI — 105+ Instagram API tools auto-generated from the OpenAPI spec. Use from Claude Code, Claude Desktop, Cursor, OpenAI Codex, Zed, Windsurf.

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