AuthGuardian by OneGraph is a free service that enables users to add sign-on with various services like GitHub, Twitch, Stripe, Salesforce, and more. It also allows users to easily describe authentication and authorization rules for their app, API, or service. The service works natively with Hasura authorization out of the box. Users can set a user's X-Hasura-User-Id to their Spotify userId, add an admin default role if they're part of your Stripe organization, and set a session variable for discounts based on their GitHub contributions. AuthGuardian also supports remote schemas feature in Hasura, allowing users to query into Salesforce, Stripe, GitHub, and more.