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: 2026-07-02 00:22:14 UTC
JSON Representation

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

A Lightdash API client library for TypeScript, Fetch API

lightdash openapi

Last synced: 18 May 2026

https://github.com/jrjsmrtn/pve-openapi

OpenAPI 3.1 specs for the Proxmox VE API (PVE 7.0-9.1) — extracted from official pve-docs packages

api elixir openapi proxmox proxmox-ve

Last synced: 20 Apr 2026

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

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

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Last synced: 06 Jun 2026

https://github.com/skygenesisenterprise/discord.go

api discord-go golang library openapi

Last synced: 20 Apr 2026

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

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

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Last synced: 06 Jun 2026

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

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

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Last synced: 13 Jun 2026

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

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

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Last synced: 02 May 2026

https://github.com/legalize-dev/legalize-sdks

Official client libraries for the Legalize API — legal texts as structured, versioned data.

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Last synced: 24 Apr 2026

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

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

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Last synced: 07 Jun 2026

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

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

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Last synced: 11 May 2026

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

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

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

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

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https://github.com/go-api-libs/cat-facts

Go library for the Cat Fact API. An API that shows different Cat Facts!

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

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

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Last synced: 03 May 2026

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

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

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

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

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

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

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

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

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Last synced: 02 May 2026

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

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

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Last synced: 28 Apr 2026

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

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

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Last synced: 10 Jun 2026

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

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

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Last synced: 23 Apr 2026

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

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

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

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

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Last synced: 09 Jun 2026

https://github.com/shearichard/flask-for-redux-testing

Flask based RESTFUL API to use for testing Redux Toolkit against.

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

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

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

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

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Last synced: 08 May 2026

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

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

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https://github.com/arkptz/mitm2openapi

Convert mitmproxy flow dumps and HAR files to OpenAPI 3.0 — fast Rust alternative to mitmproxy2swagger with HAR support

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Last synced: 27 Apr 2026

https://github.com/mohammadbekran/food-management-app

A food delivery and management system built with NestJS, TypeScript, and PostgreSQL.

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Last synced: 24 Apr 2026

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

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

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Last synced: 16 May 2026

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

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

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

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

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Last synced: 11 Jun 2026

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

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

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Last synced: 06 Jun 2026

https://github.com/definancy/definancy-spec

Definancy contract — OpenAPI wire spec + cross-language conformance suite

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

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

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Last synced: 06 Jun 2026

https://github.com/cl0v1s/openapi-mcpify

Turn any OpenAPI spec into a live MCP server — with built-in confirmation prompts for mutating operations.

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https://github.com/tdspora/tdm_rulesgen

FastAPI service for safe rule parsing, compilation, preview execution, and sandbox-backed dataset generation.

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https://github.com/merkys/openapi-render

Rendering tools for OpenAPI v3

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https://github.com/saibotsivad/glopen-routes

Some common routes that I find myself needing often, in glopen format.

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Last synced: 25 Apr 2026

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

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

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Last synced: 06 Jun 2026

https://github.com/ghchinoy/openapi-from-grpc

gRPC service with autogenerated OpenAPI spec via gRPC Gateway for REST/HTTP

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Last synced: 25 Apr 2026

https://github.com/netgen/openapi

Netgen's OpenAPI implementation

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https://github.com/two-weeks-team/previewforgeforclaudecode

3-DD Methodology: PreviewDD → SpecDD → TestDD. 143 Opus 4.7 agents turn one-line idea → frozen full-stack app. Claude Code plugin. Built with Opus 4.7 hackathon.

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https://github.com/azhirov/openapi-3.0-types

This package provides TypeScript types for OpenAPI 3.0

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

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

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Last synced: 07 Jun 2026

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

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

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Last synced: 10 Jun 2026

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

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

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Last synced: 02 Jun 2026

https://github.com/jinjihuang88-ui/maplebridge-open

Public API docs for MapleBridge, a North America to China B2B supplier matching platform.

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

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

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Last synced: 07 Jun 2026

https://github.com/robinmordasiewicz/f5xc-api-enriched

Enriched F5 Distributed Cloud OpenAPI specifications with CLI metadata

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Last synced: 25 May 2026

https://github.com/maimee1/go-apispec

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Last synced: 27 Apr 2026

https://github.com/unexist/showcase-documentation-openapi-asciidoc

Showcase for OpenApi/Swagger with AsciiDoc [MIRROR]

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Last synced: 27 Apr 2026

https://github.com/echelon-solutions/swagger-codegen-router-template

A template for swagger-codegen that generates a Node.js project that validates and routes requests to a url.

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Last synced: 28 Apr 2026

https://github.com/ricardozanini/openapi-codegen-poc

Proof Of Concept of OpenAPI Generator Embedded Codegen with Serverless Workflow SDK

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Last synced: 28 Apr 2026

https://github.com/ucl/isenseflu-openapi

OpenAPI Definitions for i-sense flu API

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https://github.com/jimsten/ticketflow

High-concurrency booking/ticketing system (MVP first)

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https://github.com/bradpatras/openapi-swift-package-schema-only

Testing out a swift package containing only the OpenAPI schema and generator plugin that can be consumed by an iOS app via spm.

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Last synced: 28 Apr 2026

https://github.com/n8n-code/n8n-nodes-uniswap

Uniswap decentralized trading protocol for automated liquidity provision and token swaps across multiple blockchains

api automation n8n n8n-community-node n8n-node openapi swagger uniswap workflow

Last synced: 08 Jun 2026

https://github.com/evilfreelancer/openchill

Prototype of Swagger / OpenAPI PHP client generator

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Last synced: 28 Apr 2026

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

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

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Last synced: 06 Jun 2026

https://github.com/valerii15298/openapi-spec

OpenAPI Specification Rendered with Astro Starlight

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Last synced: 29 Apr 2026

https://github.com/headwindz/public-holidays

public holidays open apis

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https://github.com/elipzis/aping

📲 A simple API Ping tool to feed a Swagger/OpenAPI 3.0 document file, call all paths and record time and responses

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Last synced: 29 Apr 2026

https://github.com/fs-frost/openapi2go

CLI tool to generate Go code from OpenAPI specifications.

codegen openapi

Last synced: 29 Apr 2026

https://github.com/fibercrypto/skycoinr

Skycoin client libraries for the R programming language

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Last synced: 29 Apr 2026

https://github.com/mike-brady/flask-apispec-tools

apispec flask openapi python swagger-ui

Last synced: 29 Apr 2026

https://github.com/kanryu/validagen

A validator generator for structs/maps for your go applications.

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Last synced: 29 Apr 2026

https://github.com/danhpaiva/pbh.smfa.viagensservidor.api.net

Web Api .Net 8 e Docker

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Last synced: 29 Apr 2026

https://github.com/oamerge/oamerge

Merge and share OpenAPI endpoints and schemas.

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Last synced: 30 Apr 2026

https://github.com/mreiche/marketstack-openapi

Generated OpenAPI for Marketstack

marketstack openapi

Last synced: 30 Apr 2026

https://github.com/mahmudindev/oreno-comicking-openapi-python

Python-based generated ComicKing OpenAPI client.

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Last synced: 30 Apr 2026

https://github.com/woile/drf-serializers

exploring DRF Serializers with OpenAPI

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Last synced: 30 Apr 2026

https://github.com/thanadolps/swarch_rest

Simple REST API Assignment as part of Chulalongkorn 2110521 Software Architecture course.

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Last synced: 30 Apr 2026

https://github.com/ivan-yuldashev/hono-quickstart

An opinionated, production-focused starter for Hono. This template provides an end-to-end type-safe stack, featuring a Modular Architecture, Context-Aware Transactions, Drizzle ORM, PostgreSQL, Zod, and automated OpenAPI documentation.

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Last synced: 30 Apr 2026

https://github.com/toshiemon18/schemar

Design and generate OpenAPI schema with Ruby models

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Last synced: 30 Apr 2026

https://github.com/ubill-ge/sdk-ts

TS/JS SDK for working with the UBill API

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Last synced: 30 Apr 2026

https://github.com/planet-a-ventures/affinity-client-python

API client for Affinity (www.affinity.co)

affinity client openapi python

Last synced: 01 May 2026

https://github.com/duongnguyen321/open-api

Open API for coder, programing

country nestjs openapi

Last synced: 01 May 2026

https://github.com/90dy/ts-openapis

Typescript pre-generated OpenAPIs clients

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Last synced: 02 May 2026

https://github.com/kleister/kleister-go

Kleister: SDK for Golang

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Last synced: 02 May 2026

https://github.com/ahilke/openapi-microservice-playground

A demo project to showcase and experiment with various OpenAPI technologies in a microservice environment.

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Last synced: 02 May 2026

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

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

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Last synced: 07 Jun 2026

https://github.com/fadhlaouir/travelagencybackend

This project is a backend API for a travel agency, providing authentication features such as user registration, login, and logout. It also supports booking flights and hotels, similar to popular travel booking platforms like Booking.com.

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