diff --git a/src/requests/admin.cr b/src/requests/admin.cr
index 76e3fc4..c5f4744 100644
--- a/src/requests/admin.cr
+++ b/src/requests/admin.cr
@@ -4,10 +4,14 @@ class DNSManager::Request
 	IPC::JSON.message Maintenance, 7 do
 		enum Subject
 			Verbosity      # Change the verbosity of dnsmanagerd.
+			SanityCheck    # Perform various verifications, including:
+			               # - TODO: debug print and removal of domains not linked to existing users
+			               # - TODO: check that at least an admin exists
 		end
 
 		property subject : Subject
-		property value : Int32?
+		property int     : Int32?  = nil
+		property string  : String? = nil
 
 		def initialize(@subject)
 		end
@@ -21,14 +25,36 @@ class DNSManager::Request
 
 			case @subject
 			when Subject::Verbosity
-				if verbosity = @value
+				if verbosity = @int
 					Baguette::Context.verbosity = verbosity
 				end
 				Response::Success.new
+			when Subject::SanityCheck
+				Baguette::Log.info "TODO: sanity check"
+				Response::Error.new "not implemented"
 			else
 				Response::Error.new "not implemented"
 			end
 		end
 	end
 	DNSManager.requests << Maintenance
+
+	IPC::JSON.message GenerateZoneFile, 100 do
+		property domain : String
+
+		def initialize(@domain)
+		end
+
+		def handle(dnsmanagerd : DNSManager::Service, event : IPC::Event) : IPC::JSON
+			user = dnsmanagerd.get_logged_user event
+			return Response::ErrorUserNotLogged.new unless user
+
+			return Response::Error.new "unauthorized" unless user.admin
+			# This request means serious business.
+			# TODO: check for admin.
+
+			Response::Error.new "not implemented"
+		end
+	end
+	DNSManager.requests << GenerateZoneFile
 end