@idreaminfinite: We donât have any endpointsânor do we currently have plans to make any availableâfor converting account IDs to handles. If youâre retrieving the Promoted Tweets for a particular ads account that you have access to, you should know that accountâs handle.
In case it helps, here is additional information on how to create the URL. Of course, youâll need to know the screen name or handle.