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/soenneker/soenneker.unified.httpclients

A thread-safe singleton HttpClient for Unified'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.

clean-architecture go golang http openapi postgresql

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

Resilient-ready external token cacheable service Proof of concept

java openapi quarkus redis

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https://github.com/borolgs/axum-examples

Examples of using the Axum web framework

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https://github.com/srinitude/effect-json-schema

Tiny Effect Schema adapter for Standard JSON Schema V1

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https://github.com/dweber019/spring-sleuth-example

With OpenApi, RestTemplate and request logging

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https://github.com/bizrockman/modelcontextstandard

A minimal, protocol-agnostic standard to connect LLMs like drivers with external tools using existing APIs and formats like OpenAPI, HTTP, AS2, or CAN-Bus. No custom stacks. Just structured function calls.

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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/himenon/github-rest-api-client

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https://github.com/speakeasy-sdks/template-speakeasy-bar

A template for the Speakeasy Bar starter SDK.

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https://github.com/slaterhaus/openapi-sdk-generator

Generate TypeScript SDKs, Postman collections, GraphQL schemas, and cURL commands from OpenAPI specifications

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https://github.com/roxyapi/sdk-typescript

TypeScript SDK for RoxyAPI. Western astrology, Vedic kundli, tarot, numerology, horoscope, birth chart, I Ching, biorhythm, crystals, dream, and angel number APIs. One key, 10 domains, fully typed. AI agent and MCP ready.

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https://github.com/drewlakee/json-object-openapi-schema

A Kotlin library for converting Json-object into OpenAPI Schema

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https://github.com/sosokker/go-chi-oapi-codegen-todolist

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https://github.com/rubenoalvarado/nestjs-drizzle-template

Project template to work with Drizzle in a NestJs project. It uses config module, throttler for rate limit and a custom drizzle module.

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https://github.com/codewiththomas/fom-project-server

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https://github.com/alexandrecpedro/todoapi

ToDo API

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https://github.com/libninjacom/postman-go

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

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

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https://github.com/developerkunal/openmorph

OpenMorph: Modern CLI & TUI for safe, interactive OpenAPI vendor extension key transforms with colorized diffs, dry-run, and config merging.

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https://github.com/drewalth/openapi-generator

Generate an OpenAPI Spec file from ORM model definitions

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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/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/zaydiscold/goodreads-cli

Unofficial CLI + MCP for the full Goodreads API — shelves, ratings, reviews, friends, feed, giveaways (read + write). The API map is the product.

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https://github.com/shivam-dhir/unified-payment-gateway

A scalable backend microservice built with Spring Boot to handle secure online payments, supporting multiple payment gateways, real-time processing, and multi-currency transactions with high availability and security.

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https://github.com/marc0franc0/exchangeratesapi

API REST que brinda información actualizada sobre las tasas de cambio de USD y otras monedas en Argentina. También sobre el valor de acciones en USD.

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https://github.com/takeruun/fastify-sample

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https://github.com/ferror/openapi-coverage

Symfony Command that calculates Open API documentation coverage

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https://github.com/romanow/openapi-generation

Public report about OpenAPI generator template customization

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

Public API to interact with the owle.bot app

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

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https://github.com/lloydmeta/elastic-cloud-agent

Elastic Cloud AI agent

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https://github.com/toobeeh/tirith

Angular & NEST fullstack application for skribbltypo website & dashboard

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

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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/soenneker/soenneker.fastly.openapiclient

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

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

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

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https://github.com/openapi-processor/openapi-processor-json

converts an openapi yaml file to an openapi.json file

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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/romanow/aggregator-by-tags

OpenAPI aggregator by Tags

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https://github.com/debitoor/express-openapi

Express Open API

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https://github.com/bindu-1805/list_items

This project lists items by making a request to JSON Placeholder using React.

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

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https://github.com/humbertodias/mn-kotlin-openapi-helloworld

Openapi through micronaut with kotlin

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https://github.com/aditeyas/grow-your-x

A bot that automatically tweets (posts) on Twitter (X).

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

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

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https://github.com/andrecaiado/spring-boot-openapi

Spring Boot demo project that implements API documentation using OpenApi specification and API-first approach

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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/ntrv3390/pdfninja

Say hii to your pdf with pdfNinja

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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/skuong/rclone-rc-api-docs

Easy-to-read Rclone RC API docs using Scalar

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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/tpdlshdmlrkfmcla/sparta_coding

[국비교육] 스파르타코딩클럽 안드로이드 앱 개발자 과정 주차별 학습 정리

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https://github.com/ramanks19/the-complete-spring-boot-development-bootcamp

Contains workbook and practice exercise of the Udemy course - The Complete Spring Boot Development Bootcamp (by Learn The Part Inc.)

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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.n8n.openapiclient

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

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https://github.com/thalida/openapi-docs-viewer

Display interactive OpenAPI schema documentation in VSCode

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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/soenneker/soenneker.openaq.openapiclient

A .NET client generated from the OpenAQ 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.plaid.openapiclientutil

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

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

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

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

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

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

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

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

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

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

Merge OpenAPI and Watchgod responses to track latest status of a deposit/withdraw transaction on Ethereum Chain and Polygon Chain.

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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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Last synced: 09 May 2026

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

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

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https://github.com/iqbalmind/jurnal-api-example

A collection of example integrations with the Mekari Jurnal Open API using different Code & frameworks. This repository aims to help developers quickly understand and implement Jurnal API integrations across various environments.

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https://github.com/lornajane/apitapviz

Simple visualisation of OpenAPI Arazzo files as Markdown or mermaidjs. (Mirror of the main apitapviz repo)

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https://github.com/flkt-crnpio/fastapi-sandbox

Pruebas para crear la documentacion de una API bajo los protocolos de OpenAPI utilizando el framework de FastAPI

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

OpenAI OpenAPI Specification - Kotlin

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https://github.com/hskrasek/arazzo-parser

Parse OpenAPI Arazzo specifications in PHP

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https://github.com/grparry/swaggertomcp

🔁 Convert Swagger/OpenAPI specs into Model Context Protocol (MCP) tool definitions for agentic AI compatibility.

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

Gopad: SDK for Python

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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/ndrsg/openapi-trait

Use rust macros to derive a trait from OpenAPI that you can implement

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

An async thread-safe singleton for Loops OpenApiClient

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

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

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

Wrap Swagger UI with Electron

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

An async thread-safe singleton for X OpenApiClient

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

mangadex client, generated from the OpenAPI spec

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https://github.com/bretterer/openapi-codegen

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https://github.com/those-otter-programs/spring_boot_3_restfull_api

A Spring Boot 3 RESTfull API sample

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https://github.com/libninjacom/petstore-go

Petstore client, generated from the OpenAPI spec

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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/sla-ppy/gocusign

[F] Backend integration for (docu)ment (sign)ing made with (Go)

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https://github.com/n8n-code/n8n-nodes-odoo-v17

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https://github.com/n8n-code/n8n-nodes-0x-cross-chain

Cross-chain API bridging assets across EVM, Solana, Tron, HyperCore with real-time quotes and status tracking.

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https://github.com/n8n-code/n8n-nodes-ondo-finance

Ondo Finance institutional-grade tokenized real-world assets platform bridging traditional finance and DeFi protocols

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https://github.com/marvinvista/agentic-ready

Audit whether agents can find, call, trust, price, and defend your B2B product.

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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/dhslegen/disciplined-delivery-toolkit

Claude Code plugin: superpowers discipline + toB delivery governance — 5-station spine (need→contract→implement→verify→deliver), Iron Law file-fact enforcement, SSoT accountability, ROI reporting. Zero deps.

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