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/techinpark/jira-cli

Open source Jira CLI for Jira Cloud REST API v3. Manage issues, comments, transitions, worklogs, and JQL from the terminal or LLM agents.

atlassian automation devops golang jira jira-api jira-cli jira-cloud jql openapi

Last synced: 26 Jun 2026

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

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

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Last synced: 27 Jun 2026

https://github.com/astroway/astrology-api-openapi

OpenAPI 3.1 spec for the AstroWay astrology API — natal charts, synastry, transits, Vedic, Human Design, Tarot, Numerology. Generate a typed client in any language.

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Last synced: 27 Jun 2026

https://github.com/yfedoseev/pdf_oxide_api

The fastest, smallest, most secure self-hostable PDF REST API — stateless single-shot HTTP service wrapping the pdf_oxide Rust engine (text/markdown/html extraction, AcroForm fill with first-class Japanese/CJK, merge/split, pipeline). Distroless Docker, ~8-16MB.

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Last synced: 28 Jun 2026

https://github.com/minericefield/smartphone-app-designers-portfolio-api-docs

openapi typescript

Last synced: 29 Jun 2026

https://github.com/soenneker/soenneker.stoplight.openapibundler

A utility library to download and bundle OpenApi specs from Stoplight

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Last synced: 04 Jul 2026

https://github.com/av/tools

Docker image for installing and running tools for LLM agents (MCP, OpenAPI, UVX, NPX, Python)

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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/iamyasinkaya/morwinyon

Morwinyon, geliştiricilere var olan .NET yazılım projelerine ek işlevsellikler kazandırmak için tasarlanmış bir NuGet paketi uzantısıdır.

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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/straylittlepunk/deepl

Openapi auto generated deepl api client

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Last synced: 01 May 2026

https://github.com/ugurcan-aytar/rampart

Cloud-agnostic supply chain incident response engine. One OpenAPI contract, four consumers: Backstage plugin, GitHub Action, CLI, Slack. Go + Rust, stdlib-first.

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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/zunda-pixel/niabis-api

NiaBis API

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https://github.com/edavis25/crypto_history_api

API for retrieving personally scraped historic crypto price data from various exchanges.

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Last synced: 02 May 2026

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

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

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Last synced: 02 May 2026

https://github.com/colorfulcompany/node-indeed-job-campaign-api-client

Indeed Job Campaign API Client with automatically OAuth Token refreshing

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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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Last synced: 17 Jun 2026

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

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

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Last synced: 04 Jul 2026

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

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

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Last synced: 03 May 2026

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

With OpenApi, RestTemplate and request logging

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https://github.com/hyesungoh/cultural_heritage_administration_api

문화재청 open api 사용 with Python

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

Go-Nextjs todolist application with chi server oapi-codegen as handlers template + sqlc for type-safe code from SQL

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https://github.com/esn8der/tour-of-heroes-api

API en Java usando spring boot para el proyecto del tutotrial de angular Tour Of Heroes

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Last synced: 04 May 2026

https://github.com/lsegg/delilah-resto

This project proposes the creation of an online ordering system for a restaurant.

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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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Last synced: 09 Jun 2026

https://github.com/astron-collection/astron-mail

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

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https://github.com/pagarciasima/controlgastos-backend

Proyecto de control de gastos (Spring boot)

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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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Last synced: 06 May 2026

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/openapi-processor/openapi-processor-json

converts an openapi yaml file to an openapi.json file

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https://github.com/what3words/what3words-api-docs

Host public Openapi spec and llms files for the what3words Public API

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https://github.com/bolshchikov/quiver-mcp

MCP server for Quiver API

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https://github.com/zejnilovic/gh-openapi-preview

A Chrome extension that adds an OpenAPI Preview tab to GitHub’s file view for OpenAPI specs

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https://github.com/gridaco/postgrest-openapi

JS postgREST OpenAPI Spec parser

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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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Last synced: 08 May 2026

https://github.com/tpdlshdmlrkfmcla/sparta_coding

[국비교육] 스파르타코딩클럽 안드로이드 앱 개발자 과정 주차별 학습 정리

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Last synced: 09 May 2026

https://github.com/toliyansky/openapi-spring-generator-example

Example for dev.to article

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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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Last synced: 08 May 2026

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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Last synced: 08 May 2026

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

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

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Last synced: 10 Jun 2026

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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Last synced: 08 May 2026

https://github.com/marioruiz/api-testing-example

Example using RSpec and nice_http to test REST APIs. (Uber API and Reqres API)

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Last synced: 08 May 2026

https://github.com/pixxiti/oax

Open API Spec validation and client generation tooling for Typescript

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Last synced: 08 May 2026

https://github.com/soenneker/soenneker.coinbase.openapiclients.cdp

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

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Last synced: 08 May 2026

https://github.com/met-dev/gamesellingproject

Game Sales Project Backend Side. Tech Stack= ASP.Net, EntityFramework, Code First

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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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Last synced: 09 May 2026

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

Display interactive OpenAPI schema documentation in VSCode

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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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Last synced: 09 May 2026

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

electron template using openapi-generator for IPCs communication

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Last synced: 09 May 2026

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

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

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Last synced: 31 May 2026

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

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

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Last synced: 02 Jun 2026

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

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

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Last synced: 09 May 2026

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

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

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Last synced: 09 May 2026

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

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

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Last synced: 09 May 2026

https://github.com/charconstpointer/ihateannotations

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

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Last synced: 09 May 2026

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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Last synced: 09 May 2026

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.

example example-code jurnal openapi

Last synced: 09 May 2026

https://github.com/lornajane/apitapviz

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

arazzo cli openapi vizualisation

Last synced: 09 May 2026

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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Last synced: 10 May 2026

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

Parse OpenAPI Arazzo specifications in PHP

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Last synced: 11 May 2026

https://github.com/opensourceways/cora

Command collection for all kinds of Services in Open Source Community

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Last synced: 11 May 2026

https://github.com/sookwalinga/ask_sam

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

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Last synced: 11 May 2026

https://github.com/ndrsg/openapi-trait

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

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Last synced: 02 Jul 2026

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

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

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Last synced: 16 May 2026

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

An async thread-safe singleton for X OpenApiClient

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Last synced: 11 Jun 2026

https://github.com/greyorange-labs/rebar3_openapi

Rebar3 plugin for bidirectional OpenAPI and Erlang/Cowboy code generation

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Last synced: 13 May 2026

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

A Spring Boot 3 RESTfull API sample

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Last synced: 14 May 2026

https://github.com/foncki/time-complexity-calculator

This Chrome extension allows you to easily calculate the time complexity of a function. This tool is useful for software developers looking to optimize their code and improve its performance. With this extension, you can quickly and easily determine the efficiency of your functions and make informed decisions about how to optimize them.

chrome-extension html openapi vanilla-javascript

Last synced: 14 May 2026

https://github.com/sla-ppy/gocusign

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

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Last synced: 14 May 2026

https://github.com/swayam-mishra/blobfish-mcp

Any OpenAPI spec. Zero config. Claude-ready. MCP server that turns any REST API into Claude-callable tools instantly.

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Last synced: 13 Jun 2026

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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Last synced: 14 Jun 2026

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

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

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Last synced: 14 Jun 2026

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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Last synced: 15 Jun 2026

https://github.com/burin-labs/harn-openapi

Pure-Harn OpenAPI 3.1 parser and SDK codegen helpers

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Last synced: 15 Jun 2026

https://github.com/h0rv/zchema

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

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Last synced: 16 Jun 2026

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

A thread-safe singleton HttpClient for N8n's OpenAPI integration.

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Last synced: 04 Jul 2026

https://github.com/monkeyscloud/monkeyslegion-openapi

Automatic OpenAPI 3.1 specification generator and documentation middleware for the MonkeysLegion framework.

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https://github.com/jathanism/okapi

OpenAPI 3.x client and CLI generator for Go

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Last synced: 20 Jun 2026

https://github.com/rifleh700/radio-browser-json-openapi

The OpenAPI declaration of RadioBrowser JSON API

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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/libninjacom/truid-rs

tru.id client, generated from the OpenAPI spec.

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

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

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Last synced: 26 Jun 2026

https://github.com/davidmosiah/delx-agent-utilities

Open-source stateless utility tools for AI agents: URL, DNS, TLS, OpenAPI, x402, JWT, CSV/JSON, cron, and composite reports.

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Last synced: 27 Jun 2026

https://github.com/sukramj/openccu-loom-types

Generated Pydantic v2 models and enum types for the openccu-loom REST + WebSocket contract

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Last synced: 28 Jun 2026

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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Last synced: 29 Jun 2026

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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