Railway does not offer a feature that prevents a workspace administrator from modifying their own permissions, accessing database credentials, or changing service configurations. On Enterprise plans, Environment RBAC restricts non-admin members from viewing variables, credentials, and configs in restricted environments, and Access Groups scope project visibility, but admins always retain full access and can toggle these restrictions. Audit logs (up to 18 months retention on Enterprise) record all actions including the actor, so admin activity is traceable after the fact, but the controls are not enforceable against the admin role itself. For the constraint you describe, an independently controlled administrator account held by a separate party would be the way to enforce it.