Something like this? handlers: - url: /.* mime_type: text/html static_files: static/index.html upload: static/index.html Anything you don't want to

Something like this? handlers: - url: /.* mime_type: text/html static_files: static/index.html upload: static/index.html Anything you don't want to go to index.html you can just put before that handler since it processes the app.yaml from top to bottom and stops at the first match.