diff --git a/src/shared/varlink-io.systemd.MachineInstance.c b/src/shared/varlink-io.systemd.MachineInstance.c
index 365b6f5f9e1..66304027098 100644
--- a/src/shared/varlink-io.systemd.MachineInstance.c
+++ b/src/shared/varlink-io.systemd.MachineInstance.c
@@ -25,8 +25,27 @@ static SD_VARLINK_DEFINE_METHOD_FULL(
                 SD_VARLINK_FIELD_COMMENT("Event-specific payload"),
                 SD_VARLINK_DEFINE_OUTPUT(data, SD_VARLINK_OBJECT, SD_VARLINK_NULLABLE));
 
+static SD_VARLINK_DEFINE_METHOD(
+                AddStorage,
+                SD_VARLINK_FIELD_COMMENT("Index of the attached file descriptor for the storage volume"),
+                SD_VARLINK_DEFINE_INPUT(fileDescriptorIndex, SD_VARLINK_INT, 0),
+                SD_VARLINK_FIELD_COMMENT("Unique storage name of the form '<provider>:<volume>' identifying this binding for later removal"),
+                SD_VARLINK_DEFINE_INPUT(name, SD_VARLINK_STRING, 0),
+                SD_VARLINK_FIELD_COMMENT("Backend-specific configuration"),
+                SD_VARLINK_DEFINE_INPUT(config, SD_VARLINK_STRING, SD_VARLINK_NULLABLE));
+
+static SD_VARLINK_DEFINE_METHOD(
+                RemoveStorage,
+                SD_VARLINK_FIELD_COMMENT("Unique storage name '<provider>:<volume>' to detach"),
+                SD_VARLINK_DEFINE_INPUT(name, SD_VARLINK_STRING, 0));
+
 static SD_VARLINK_DEFINE_ERROR(NotConnected);
 static SD_VARLINK_DEFINE_ERROR(NotSupported);
+static SD_VARLINK_DEFINE_ERROR(NoSuchStorage);
+static SD_VARLINK_DEFINE_ERROR(StorageExists);
+static SD_VARLINK_DEFINE_ERROR(StorageImmutable);
+static SD_VARLINK_DEFINE_ERROR(BadConfig);
+static SD_VARLINK_DEFINE_ERROR(ConfigNotSupported);
 
 SD_VARLINK_DEFINE_INTERFACE(
                 io_systemd_MachineInstance,
@@ -45,7 +64,21 @@ SD_VARLINK_DEFINE_INTERFACE(
                 &vl_method_Describe,
                 SD_VARLINK_SYMBOL_COMMENT("Subscribe to machine events. Returns a stream of events as they occur."),
                 &vl_method_SubscribeEvents,
+                SD_VARLINK_SYMBOL_COMMENT("Attach a storage volume (passed via file descriptor) to the running machine"),
+                &vl_method_AddStorage,
+                SD_VARLINK_SYMBOL_COMMENT("Detach a previously-attached storage volume from the running machine"),
+                &vl_method_RemoveStorage,
                 SD_VARLINK_SYMBOL_COMMENT("The connection to the machine backend is not available"),
                 &vl_error_NotConnected,
                 SD_VARLINK_SYMBOL_COMMENT("The requested operation is not supported"),
-                &vl_error_NotSupported);
+                &vl_error_NotSupported,
+                SD_VARLINK_SYMBOL_COMMENT("The named storage binding does not exist"),
+                &vl_error_NoSuchStorage,
+                SD_VARLINK_SYMBOL_COMMENT("A storage binding with this name already exists"),
+                &vl_error_StorageExists,
+                SD_VARLINK_SYMBOL_COMMENT("The storage binding cannot be detached at runtime (e.g. attached at boot)"),
+                &vl_error_StorageImmutable,
+                SD_VARLINK_SYMBOL_COMMENT("The supplied 'config' value is not valid for this backend"),
+                &vl_error_BadConfig,
+                SD_VARLINK_SYMBOL_COMMENT("The supplied 'config' value is recognized but not supported by this backend"),
+                &vl_error_ConfigNotSupported);