The OpenAPI Specification (OAS) provides a standardized, language-independent way to describe HTTP APIs. It enables both developers and tools to understand and interact with an API without requiring access to its source code or documentation. A well-defined OpenAPI description allows for seamless integration with tools such as Swagger UI, Postman, and code generators for client and server implementations.
Torii provides the OpenAPI specification here for downloading:
https://developers.toriihq.com/openapi