Adding Roles through API calls

[joshuaLoren]

Is there a way to add a new Role via an API call? It looks like there is an experimental feature for inherited roles: https://hasura.io/docs/latest/graphql/core/api-reference/metadata-api/inherited-roles.html

While I could create a default role, and then create new inherited roles for each schema in my database, my concern is that this experimental feature isn't safe for production or that it could go away later. So, overall my three questions are:

1. Is the inherited roles experimental feature safe to use in production?
2. Is there a possibility that experimental features aren't supported in the future?
3. How can I add a role via an api call without using an experimental feature? I do not need inherited roles, it is just the only documented way I could find to add a role via an api call.

Any help/advice is greatly appreciated!