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/ahesmaeili79/oasist

🎯 Stop writing API clients manually! Generate type-safe Python clients from OpenAPI schemas with a beautiful CLI. Works with any API - FastAPI, Django, Flask, and more.

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https://github.com/nightapes/go-rest

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