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/xutyxd/ts-openapi-contract-first-boilerplate

A boilerplate for building contract-first APIs in TypeScript with OpenAPI. Includes OpenAPI definition, compliant server setup, and npm package generation for seamless API development.

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Last synced: 05 Feb 2026

https://github.com/govcraft/mistral-rouille

Mistral Client generated from Mistral's OpenAPI spec.

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Last synced: 23 Feb 2026

https://github.com/pschichtel/betterswagger

A new code generator for OpenAPI 3 specs

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https://github.com/mermade/oas-containers

Docker/podman containers for OAS documentation and registry

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https://github.com/dwolla/openapi-connect

Full OpenAPI 3.0 specification for Dwolla Connect's API

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https://github.com/rpstreef/openapi-node-example

OpenAPI Node code example

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https://github.com/maheshshinde9100/opdheal

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https://github.com/RingoMar/whisper-devcontainer

Openai whisper inside of vscode docker devcontainer using example files

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https://github.com/vahor/docs-template

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https://github.com/ophiosdev/openapi-generator-di

OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec (v2, v3)

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https://github.com/entur/abt-bob-openapi

OpenAPI artifacts for the BoB standard

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https://github.com/marcin-brzozowski/openapi-examples

CLI application for generating OpenAPI examples

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https://github.com/jjanisheck/botvisibility

When AI agents browse a site that doesn't publish machine-readable metadata or APIs, they fall back to scraping HTML, guessing endpoints, and retrying. That burns 5-100x more tokens per session and silently inflates the cost of every agent interaction. BotVisibility runs 55 automated checks across 5 levels.

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https://github.com/khaled878/lyscode-platform

🎓 Build and manage online courses with the LysCode.com Course Platform for effective learning and teaching experiences.

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https://github.com/numq/cards-django-rest-api

Django implementation of cards/notes application backend

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https://github.com/seabed-labs/drip-client

Generated API Clients for the Drip Backend

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https://github.com/fdeniz07/realestatebackend

Java, Spring Boot 3 based Real Estate Project

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

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

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https://github.com/himenon/docker-typescript-openapi

TypeScript implementations generated from Docker OpenAPI

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https://github.com/gopad/gopad-js

Javascript SDK for Gopad

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https://github.com/letehaha/walutomat-sdk

Unofficial SDK clients for the Walutomat API v2.0.0. Walutomat is a Polish peer-to-peer currency exchange platform operated by Currency One. This SDK provides typed clients for their REST API, covering wallet management, transfers, direct FX, and the P2P market order book.

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

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https://github.com/vaelixbank/vaelix-exchange

The Vaelix Exchange Open Source Platform

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https://github.com/soenneker/soenneker.cursor.cloudagents.openapiclientutil

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

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https://github.com/neelkamath/backend-prototype

⏩ Template for backend prototypes

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https://github.com/viniciusferreira7/bun-auth

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https://github.com/soenneker/soenneker.rebrickable.clientutil

An async thread-safe singleton for Rebrickable OpenApiClient

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

An async thread-safe singleton for the HubSpot OpenApiClient

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https://github.com/apimatic/skills

AI agent skills for APIMatic. Build, configure, and publish developer portals, generate SDKs, and optimize OpenAPI specs from Claude Code, Cursor, and Codex.

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https://github.com/controlplane-com/types-ts

Control Plane TypeScript type definitions for type-safe API interactions

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

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

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https://github.com/gabrielcenteiofreitas/express-zod-openapi-typed

Type-safe Express routes with Zod validation and automatic OpenAPI specification generation. Full TypeScript support with inferred types from Zod schemas.

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https://github.com/vshisterov/openapi2jira

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

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

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https://github.com/jeremi/registry-docs

Canonical documentation website for the registry project family.

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https://github.com/go-api-libs/jobicy

Go library for the Remote Jobs API/RSS Feed. Discover and integrate a diverse range of remote job listings with Jobicy's public API. This API offers the latest remote job opportunities across various industries and regions, making it a valuable resource for developers and businesses looking to enhance their job feed platforms.

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

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

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https://github.com/w3labkr/ipynb-openapi

Example using openapi for jupyter.

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Last synced: 16 Apr 2026

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/mesteriis/fullstack-template

Opinionated FastAPI + Vue fullstack template with contract parity checks, ADR-driven governance, and observability baseline.

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https://github.com/alexandrelamberty/bookstore-api-spec

:books: Online Bookstore API Specification. Full Stack Web Developer training @ https://technofuturtic.be.

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https://github.com/domahidizoltan/assessment-faceit

Assessment project for Faceit

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https://github.com/tryagi/runway

C# SDK based on Runway OpenAPI specification

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https://github.com/soenneker/soenneker.cloudflare.openapi.suite

A comprehensive suite of utility libraries for Cloudflare's OpenApi operations

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https://github.com/davidsteiner/orator

Rust server stub generation from OpenAPI 3.1 specs

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https://github.com/funkeyfreak/msgraph-openapi

A buildable OpenAPI v3 description for Microsoft Graph

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

A Loops (loops.so) .NET client generated from their OpenAPI schema, updated daily

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

A HubSpot .NET client generated from their OpenAPI schema, updated daily

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

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

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https://github.com/ismiljanic/otvrac

Repozitorij za predmet "Otvoreno računarstvo" koji sadrži laboratorijske vježbe iz akademske godine 2024./2025.

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https://github.com/soenneker/soenneker.trustedform.certificates.openapiclient

A Active Prospect OpenApi .NET client generated from the OpenAPI schema, updated daily

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https://github.com/belgif/openapi-time

OpenAPI data types for time

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https://github.com/buonzz/ph-locations-api

REST API for serving Cities, Barangays, Provinces and Regions in Philippines

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Last synced: 27 Jan 2026

https://github.com/typisttech/swagger_ui_standalone

Generate standalone static Swagger UI sites from OpenAPI specifications.

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Last synced: 17 Oct 2025

https://github.com/badsyntax/mailinabox-api-php

PHP client SDK for the Mail-in-a-Box API.

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https://github.com/soenneker/soenneker.n8n.openapiclient

A .NET client generated from the N8N OpenAPI schema, updated daily

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https://github.com/piyush06singhal/weather_app

A simple weather app that provides real-time weather information for any location. Built with HTML, CSS, and JavaScript, it fetches weather data from an API and displays current temperature, humidity, wind speed, and more.

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https://github.com/samuele-barbiera/kubb-gen-scribe-cli

a cli made to scaffold a basic structure for the kubb SDKs, managing the BE api calls fully typesafe with a swagger yaml file

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https://github.com/jlarmstrongiv/bunny-sdk-openapi

OpenAPI Specification for bunny.net 🐰

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Last synced: 16 Oct 2025

https://github.com/mizcausevic-dev/observability-incident-command-api

TypeScript API for incident severity analysis, escalation routing, responder visibility, and operational incident-command workflows.

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https://github.com/mizcausevic-dev/partner-lead-distribution-engine

TypeScript platform for partner lead routing, territory governance, SLA-aware distribution, and attribution-conscious channel operations.

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Last synced: 01 Jun 2026

https://github.com/mizcausevic-dev/content-workflow-intelligence-platform

TypeScript platform for editorial workflow intelligence, publishing readiness scoring, bottleneck visibility, and content operations governance.

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https://github.com/kineticcookie/archivarius

Documentation renderer based on sbt-paradox

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Last synced: 17 Apr 2026

https://github.com/inyourtime/fastify-multiple-swagger

A Fastify plugin for generating multiple Swagger/OpenAPI documents using @fastify/swagger.

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Last synced: 25 Apr 2026

https://github.com/vivek92503/weather-app

A weather app showing current conditions and forecasts using OpenWeatherMap API with location detection and temperature unit toggle.

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Last synced: 09 May 2026

https://github.com/zaiducreatesjarvis/blockchain-event-ticketing-app

Web application for selling tickets using blockchain technology.

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https://github.com/thavarshan/orthrus

⛨ A production-ready, multi-tenant JWT authentication service built with Symfony 7.3 and PHP 8.2+.

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Last synced: 02 Apr 2026

https://github.com/gah-code/ai-prompt-bootcamp

Learning practical coding skills for working professionally with AI

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Last synced: 17 Apr 2026

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

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

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Last synced: 02 Apr 2026

https://github.com/mizcausevic-dev/briefing-intelligence-engine

Python + FastAPI intelligence engine for executive briefing scoring, narrative generation, risk ranking, and action sequencing.

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https://github.com/snaapi/snaapi

Rapid API development platform without writing code

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Last synced: 02 Apr 2026

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

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

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Last synced: 13 May 2026

https://github.com/nigussolomon/nest-util

Supercharge NestJS development with a generic CRUD engine, automated CLI generator (ncnu), and essential utilities. Features deep TypeORM integration, automated Swagger/OpenAPI documentation, and rapid boilerplate generation.

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Last synced: 17 Apr 2026

https://github.com/zemloai-ctrl/zemloai-api

Zemlo ZQP v1.0 Lite – The First AI-Agent Optimized Logistics Infrastructure. Provides deterministic market signals, situational awareness, and automated risk analysis via a no-auth API. Built to be the "Logistics PageRank" for autonomous agents and humans alike.

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Last synced: 03 Jun 2026

https://github.com/AlexDemure/gadfastopenapi

Customize and override OpenAPI schema details in FastAPI with ease

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Last synced: 17 Apr 2026

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

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

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Last synced: 01 Jun 2026

https://github.com/syucream/holaspirit-client-typescript-fetch

A TypeScript client for the Holaspirit API, generated from the official OpenAPI specification using openapi-fetch.

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https://github.com/omermecitoglu/tsmancer

Conjures strictly-typed API clients from an OpenAPI tome

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

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

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https://github.com/cashputation/opensnap

Official Repository for the Self-Negotiating APIs Protocol (SNAP)

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

A thread-safe utility for obtaining Quo'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/jcs090218/swagger-it

Automatically generate the swagger.io yaml file for your project.

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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/javrrr/data-360-sdk

TypeScript SDK for the Salesforce Data 360 Connect REST API

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https://github.com/chihebnabil/openapi-graft

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

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

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https://github.com/ankitboghra/openapi-watchgod-merger

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https://github.com/mizcausevic-dev/vapor-saas-billing-engine

Swift Vapor billing engine for subscription lifecycle, proration, dunning, and replay-safe webhook idempotency.

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https://github.com/hmartiins/mvp-fullstack-backend-puc-rio

Controle de Gastos Pessoais - MVP Puc RIO

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https://github.com/humbertodias/rust-rweb-openapi

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https://github.com/mowatermelon/mw2-antd

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Last synced: 19 Apr 2026

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

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

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https://github.com/dreamquality/postman-openapi-schema-validator

A Node.js utility for integrating OpenAPI schema validations into Postman collections. Automatically reads OpenAPI specs (JSON/YAML) and applies schema validation scripts to Postman requests, supporting OpenAPI versions 2.0, 3.0.x. Provides detailed console logging for validation results.

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