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OpenAPI Specification

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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.

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open-webui

open-webui / open-webui

Sponsor
Star 158k

User-friendly AI Interface (Supports Ollama, OpenAI API, ...)

ui ai mcp openapi self-hosted openai webui rag llm llms ollama llm-ui ollama-webui llm-webui open-webui
  • Updated Nov 12, 2026
  • Svelte
fastapi

fastapi / fastapi

Star 105k

FastAPI framework, high performance, easy to learn, fast to code, ready for production

python api json framework web rest json-schema async swagger openapi python3 asyncio swagger-ui redoc openapi3 python-types uvicorn starlette pydantic fastapi
  • Updated Nov 11, 2026
  • Python

usebruno / bruno

Star 48.4k

Opensource IDE For Exploring and Testing API's (lightweight alternative to Postman/Insomnia)

javascript git testing graphql-client automation opensource rest-api http-client openapi api-client developer-tools testing-tools api-testing openapi3
  • Updated Nov 12, 2026
  • JavaScript
full-stack-fastapi-template

fastapi / full-stack-fastapi-template

Star 46.2k

Full-stack web application template with FastAPI, React, SQLModel, PostgreSQL, Vite, Tailwind CSS, shadcn/ui, FastAPI Cloud, and Docker Compose.

react python docker jwt typescript docker-compose postgresql openapi full-stack pytest tailwindcss vite github-actions fastapi playwright sqlmodel tanstack-query tanstack-router shadcn-ui fastapi-cloud
  • Updated Nov 3, 2026
  • TypeScript

OAI / OpenAPI-Specification

Star 31.3k

The OpenAPI Specification Repository

rest openapi apis oas webapi openapi-specification
  • Updated Nov 10, 2026
  • Markdown

swagger-api / swagger-ui

Star 29.1k

Swagger UI is a collection of HTML, JavaScript, and CSS assets that dynamically generate beautiful documentation from a Swagger-compliant API.

open-source rest rest-api swagger openapi swagger-ui oas hacktoberfest openapi-specification swagger-api openapi3 swagger-client openapi31 swagger-oss openapi32
  • Updated Nov 10, 2026
  • JavaScript

OpenAPITools / openapi-generator

Star 26.9k

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

api sdk rest generator rest-api openapi api-client api-server restful-api hacktoberfest rest-client openapi3 openapi-generator
  • Updated Nov 11, 2026
  • Java
redoc

Redocly / redoc

Star 26k

๐Ÿ“˜ OpenAPI/Swagger-generated API Reference Documentation

reactjs swagger api-documentation documentation-tool openapi hacktoberfest openapi-specification documentation-generator redoc openapi3 openapi31
  • Updated Nov 12, 2026
  • TypeScript
Douyin_TikTok_Download_API

Evil0ctal / Douyin_TikTok_Download_API

Sponsor
Star 21.4k

๐Ÿš€ ่‡ชๆ‰˜็ฎก็š„ๆŠ–้Ÿณใ€TikTokใ€B ็ซ™ๆ•ฐๆฎ้‡‡้›†ไธŽๆ— ๆฐดๅฐ่ง†้ข‘ไธ‹่ฝฝ API๏ผŒๆ”ฏๆŒ AI agent ้€š่ฟ‡ MCP ่ฐƒ็”จไธŽ็ฆป็บฟ่ฏญ้Ÿณ่ฝฌๆ–‡ๅญ—๏ผŒDocker ไธ€้”ฎ้ƒจ็ฝฒใ€‚| Self-hosted TikTok, Douyin & Bilibili scraper and no-watermark video downloader โ€” async REST API, MCP server for AI agents, CLI and web console, plus offline speech-to-text for downloaded videos. Self-healing identity pool, PostgreSQL archive, one docker compose up.

crawler scraper downloader social-media rest-api openapi video-downloader web-scraping bilibili data-collection speech-to-text douyin tiktok fastapi tiktok-scraper tiktok-api douyin-api tiktok-downloader model-context-protocol mcp-server
  • Updated Nov 9, 2026
  • Python
grpc-gateway

grpc-ecosystem / grpc-gateway

Star 20k

gRPC to JSON proxy generator following the gRPC HTTP spec

go rest-api swagger grpc openapi grpc-gateway restful-api
  • Updated Nov 12, 2026
  • Go

apache / apisix

Star 17.3k

The Cloud-Native API Gateway and AI Gateway

api nginx kubernetes iot devops microservices serverless api-management api-gateway luajit openapi reverse-proxy cloud-native kubernetes-ingress loadbalancing openapi3 apisix openapi31 ai-gateway
  • Updated Nov 12, 2026
  • Lua

scalar / scalar

Star 16.4k

Scalar is an open-source API platform:ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€๐ŸŒ Modern REST API Clientใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€๐Ÿ“– Beautiful API Referencesใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€ใ€€โœจ 1st-Class OpenAPI/Swagger Support

api docs vue reference rest-api swagger http-client openapi api-client openapi3
  • Updated Nov 12, 2026
  • TypeScript

swaggo / swag

Star 13.1k

Automatically generate RESTful API documentation with Swagger 2.0 for Go.

golang swagger annotations openapi swagger2
  • Updated Sep 30, 2026
  • Go
fastapi_mcp

tadata-org / fastapi_mcp

Sponsor
Star 12k

Expose your FastAPI endpoints as Model Context Protocol (MCP) tools, with Auth!

ai authentication mcp openapi authorization cursor claude windsurf fastapi llm mcp-servers mcp-server modelcontextprotocol
  • Updated Nov 24, 2025
  • Python

alufers / mitmproxy2swagger

Star 9.7k

Automagically reverse-engineer REST APIs via capturing traffic

reverse-engineering swagger openapi mitmproxy
  • Updated Nov 9, 2026
  • HTML
django-ninja

vitalik / django-ninja

Star 9.2k

๐Ÿ’จ Fast, Async-ready, Openapi, type hints based framework for building APIs

python django rest-api swagger openapi swagger-ui pydantic django-ninja
  • Updated Nov 10, 2026
  • Python
api-platform

api-platform / api-platform

Sponsor
Star 9.2k

๐Ÿ•ธ๏ธ Create REST and GraphQL APIs, scaffold Jamstack webapps, stream changes in real-time.

react api graphql php framework symfony rest symfony-bundle nextjs openapi graphql-server json-ld jamstack hydra-api api-platform hypermedia-client hypermedia-api mercure vulcain frankenphp
  • Updated Nov 9, 2026
  • PHP

oapi-codegen / oapi-codegen

Sponsor
Star 8.7k

Generate Go client and server boilerplate from OpenAPI 3 specifications

go golang rest-api swagger openapi openapi3 openapi-codegen openapi-generator rest-api-client
  • Updated Nov 11, 2026
  • Go
litestar

litestar-org / litestar

Sponsor
Star 8.5k

Light, flexible and extensible ASGI framework | Built to scale

python api rest swagger openapi asyncio asgi redoc pydantic rapidoc starlite msgspec litestar litestar-api litestar-framework
  • Updated Nov 11, 2026
  • Python

mockoon / mockoon

Sponsor
Star 8.5k

Mockoon is the easiest and quickest way to run mock APIs locally. No remote deployment, no account required, open source.

electron mock api application rest server rest-api mock-server swagger desktop openapi mocking prototyping mocking-utility mock-data openapi3 mock-api mocking-server
  • Updated Nov 11, 2026
  • TypeScript

Created by OpenAPI Initiative, Tony Tam, Darrel Miller, Mike Ralphson, Ron Ratovsky, Uri Sarid, Jason Harmon

Released August 10, 2011

Latest release 2 months ago

Followers
194 followers
Repository
OAI/OpenAPI-Specification
Website
github.com/topics/openapi
Wikipedia
Wikipedia

Related topics

json-schema raml rest-api
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