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Amazon API Gateway
Developer Guide

Documenting an API Gateway API

To help customers understand and use your API, you should document the API. To help you document your API, API Gateway lets you add and update the help content for individual API entities as an integral part of your API development process. API Gateway stores the source content and enables you to archive different versions of the documentation. You can associate a documentation version with an API stage, export a stage-specific documentation snapshot to an external Swagger file, and distribute the file as a publication of the documentation.

To document your API, you can call the API Gateway REST API, use one of the AWS SDKs or AWS CLIs for API Gateway, or use the API Gateway console. In addition, you can import or export the documentation parts defined in an external Swagger file. Before explaining how to document your API, we'll show how API documentation is represented in API Gateway.