ViewerService

Chatto exposes this service below /api/connect.

Shared message and enum definitions are documented in Shared Types And Enums.

ViewerService

Provides authenticated user profile, preferences, and capability state.

GetViewer

Returns the current authenticated viewer. This RPC requires a logged-in user; unauthenticated callers receive an UNAUTHENTICATED error.

POST /api/connect/chatto.api.v1.ViewerService/GetViewer

Input: GetViewerRequest

Request for the authenticated viewer snapshot.

Result: GetViewerResponse

Authenticated viewer snapshot needed by application shells.

Field	Type	Description
user	ViewerUser	Current authenticated user.
capabilities	ViewerCapabilities	Permission-derived capabilities.
server_notification_preference	NotificationPreference	Server-wide notification preference.
room_notification_preferences	repeated RoomNotificationPreference	Notification preferences for rooms the user participates in.
viewer_permissions	ServerViewerPermissions	Effective server/channel permission decisions for the authenticated user.
viewer_state	ServerViewerState	Non-permission server state for the authenticated user.