Provide your API definition as an OAS 3.0 or Swagger 2.0 file that your users can download from your portal.
Once your API is published and your portal is deployed, a
Download button appears. If you have only selected one of the
formats, you have either a Download OAS 3 or Download
Swagger 2 button. If you have selected both, you have a drop-down list
that allows you to select the format to download.