Yes definitely, you can update directly using the bucket.update() method, and pass in an id and the data object. The better way would be to implement the 'local

Yes definitely, you can update directly using the bucket.update() method, and pass in an id and the data object. The better way would be to implement the 'local' callback to return the data, then just call bucket.update(id), and the library will call your 'local' method to retrieve the current state for that id. You can read about the 'local' callback here: https://simperium.com/docs/reference/js/#local https://simperium.com/docs/reference/js/#local For auth, we'll be adding cross-origin support for https://auth.simperium.com https://auth.simperium.com, up till now we've been focused on supporting apps with existing backends which generally use the HTTP API to generate auth tokens from their server.