diff --git a/qqq-middleware-javalin/src/main/java/com/kingsrook/qqq/middleware/javalin/schemabuilder/ToSchema.java b/qqq-middleware-javalin/src/main/java/com/kingsrook/qqq/middleware/javalin/schemabuilder/ToSchema.java
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--- /dev/null
+++ b/qqq-middleware-javalin/src/main/java/com/kingsrook/qqq/middleware/javalin/schemabuilder/ToSchema.java
@@ -0,0 +1,46 @@
+/*
+ * QQQ - Low-code Application Framework for Engineers.
+ * Copyright (C) 2021-2024.  Kingsrook, LLC
+ * 651 N Broad St Ste 205 # 6917 | Middletown DE 19709 | United States
+ * contact@kingsrook.com
+ * https://github.com/Kingsrook/
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.kingsrook.qqq.middleware.javalin.schemabuilder;
+
+
+import com.kingsrook.qqq.openapi.model.Schema;
+
+
+/*******************************************************************************
+ ** Mark a class as eligible for running through the SchemaBuilder.
+ **
+ ** Actually not really necessary, as schemaBuilder can run on any class - but
+ ** does provide a method that a class might use to customize how it gets
+ ** schemafied.
+ *******************************************************************************/
+public interface ToSchema
+{
+
+   /***************************************************************************
+    **
+    ***************************************************************************/
+   default Schema toSchema()
+   {
+      return new SchemaBuilder().classToSchema(getClass());
+   }
+
+}