Don’t want XML-RPC

Hi there

Jetpack, much like other plugins, services, and apps like mobile apps, relies on the XML-RPC file to communicate with WordPress.com. If this is blocked, your Jetpack connection will stop working properly.

If you disable XML-RPC you won’t be able to make a Jetpack connection on your site, so you’ll be unable to use the features that rely on the connection, as detailed here:

https://jetpack.com/support/why-the-wordpress-com-connection-is-important-for-jetpack/