**To export an OpenAPI definition of an HTTP API** The following ``export-api`` example exports an OpenAPI 3.0 definition of an API stage named ``prod`` to a YAML file named ``stage-definition.yaml``. The exported definition file includes API Gateway extensions by default. :: aws apigatewayv2 export-api \ --api-id a1b2c3d4 \ --output-type YAML \ --specification OAS30 \ --stage-name prod \ stage-definition.yaml This command produces no output. For more information, see `Exporting an HTTP API from API Gateway <https://docs.aws.amazon.com/apigateway/latest/developerguide/http-api-export.html>`__ in the *Amazon API Gateway Developer Guide*.