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diff --git a/subprojects/viatra-runtime/src/main/java/tools/refinery/viatra/runtime/matchers/backend/IQueryBackendHintProvider.java b/subprojects/viatra-runtime/src/main/java/tools/refinery/viatra/runtime/matchers/backend/IQueryBackendHintProvider.java
new file mode 100644
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--- /dev/null
+++ b/subprojects/viatra-runtime/src/main/java/tools/refinery/viatra/runtime/matchers/backend/IQueryBackendHintProvider.java
@@ -0,0 +1,32 @@
+/*******************************************************************************
+ * Copyright (c) 2010-2015, Bergmann Gabor, Istvan Rath and Daniel Varro
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v. 2.0 which is available at
+ * http://www.eclipse.org/legal/epl-v20.html.
+ * 
+ * SPDX-License-Identifier: EPL-2.0
+ *******************************************************************************/
+package tools.refinery.viatra.runtime.matchers.backend;
+
+import tools.refinery.viatra.runtime.matchers.psystem.queries.PQuery;
+
+/**
+ * Provides query evaluation hints consisting of the Engine default hints and
+ * the hints provided by the pattern itself.
+ * 
+ * @author Bergmann Gabor
+ * @since 0.9
+ * @noimplement This interface is not intended to be implemented by clients, except in the tools.refinery.viatra.runtime plugin.
+ */
+public interface IQueryBackendHintProvider {
+    
+    /**
+     * Suggests query evaluation hints regarding a query. The returned hints reflects the default hints of the 
+     * query engine merged with the hints provided by the pattern itself. These can be overridden via specific
+     * advanced API of the engine.  
+     * 
+     * @since 1.4
+     */
+    QueryEvaluationHint getQueryEvaluationHint(PQuery query);
+    
+}