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: 2026-07-05 00:18:41 UTC
JSON Representation

https://github.com/xpdojo/api

An open API (often referred to as a public API) is a publicly available application programming interface that provides developers with programmatic access to a proprietary software application or web service.

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https://github.com/edavis25/crypto_history_api

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https://github.com/majid-l/swagger-ui-docs

Swagger UI constructed using an OpenAPI Specification document containing the definition for an e-commerce RESTful API service that I've created.

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https://github.com/mermade/api-registry

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

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https://github.com/ideadapt/intellij-swagger-annotations

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https://github.com/go-api-libs/remote-ok-jobs

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https://github.com/grparry/swaggertomcp

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https://github.com/pidelport/onfido-openapi-rust

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https://github.com/saturninoabril/mattermost-openapi-insomnia

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https://github.com/sookwalinga/ask_sam

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A utility library to merge OpenApi specs

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

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

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https://github.com/osisdie/dotnet-webapi-cqrs-boilerplate

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