Legalesign GraphQL is in alpha. If you are integrating now, use the REST API.
But we welcome your registration for early access - let us know us at firstname.lastname@example.org.
GraphQL is what we're using to power the next version of Legalesign.
If you already use the REST API v1 you don't need to do anything. We'll be migrating it to use the fast GraphQL interface so you get the benefits without any code changes.