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/weitaishan/schemato
Free browser-only schema converter — 10 inputs × 15 outputs = 149 conversions. JSON, JSON Schema, OpenAPI, GraphQL, SQL, Protobuf, Prisma → TypeScript, Zod, Pydantic, Go, Rust and more.
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https://github.com/jacoblincool/api-spec.pages.dev
📚 Show OpenAPI Spec with pre-rendered title and description. No CORS headers are required. Support SwaggerUI and RapiDoc.
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https://github.com/onlyphantom/revconnexion
RevConnextion is a RESTful API application built on top of Connexion and can be used as a standalone post-workshop survey system
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https://github.com/boywithkeyboard-archive/digitalocean-api-client
A preconfigured, up-to-date OpenAPI client for DigitalOcean.
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RocketSwagger is a hosted Swagger UI instance that allows users to visualize and interact with OpenAPI documentation.
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The Books Management System is a comprehensive platform designed to manage and organize book collections efficiently. It caters to libraries, bookstores, and individual book enthusiasts by providing tools for cataloging, tracking, and maintaining a database of books.
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OpenAPI describes APIs. _________ x-openapi-flow describes how they actually work: for developers and AI.
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Dynamic CLI generator for OpenAPI specifications designed for AI agents and automation
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ProxyConf is a control plane for Envoyproxy that simplifies and secures API management in enterprise environments. It leverages the OpenAPI specification to streamline the configuration of Envoyproxy, providing a powerful yet user-friendly approach for managing, and securing API traffic at scale.
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Twilio OpenAPI clients for Rust
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https://github.com/ohbarye/swagger-merger-docker
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https://github.com/r7kamura/imgur-openapi
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Local-first kanban for AI-agent workflows. Drag a task to Approved and your AI coding agent picks it up via MCP and drives it through analyst → in_progress → testing on its own. MCP for Claude Code & Cline, OpenAPI for opencode / Open WebUI / Ollama / any function-calling LLM. SQLite + FastAPI, runs on localhost.
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