kiosk-core

https://github.com/kiosk-hq/kiosk

kiosk-core is the foundation for the Kiosk framework. It defines the value types (Identity, Mandate), the abstract base classes adapters extend (AgentIdentityProviders, UserIdentityProviders, PaymentProviders, KycProviders), the Postgres GUC namespace constants, the protocol-version surface, the canonical-uuid shape guard (UuidCheck), and the Kiosk.configure block. No Rails dependency. Loadable in any Ruby app; the heavier kiosk-server and kiosk-rls gems build on top of this.