Hi @A.Anu Manasa the developer portal can consume Open API (Swagger) or WADL. See instructions here to publish your API to the developer portal. If you do not have a Swagger doc for your API, there is a utility to generate it from your proxy.
Actually I created one Application in Apigee Developer Portal For my own API proxy.If I want to publish that Apllication/access that application what are the steps I need to follow.can you please help me?
Not sure what you mean by publish that application? If you want to access that application, you can use use the API Key generated to make calls to the API.