try fixing the issue

src/main/kotlin/xyz/alexcrea/cuanvil/dependency/DependencyManager.kt

@@ -84,11 +84,12 @@ object DependencyManager {
         }
 
         // "Generic" dependencies
+        if (pluginManager.isPluginEnabled("ToolStats"))
+            genericDependencies.add(ToolStatsDependency(pluginManager.getPlugin("ToolStats")!!))
 
-
+        for (dependency in genericDependencies)
-        for (dependency in genericDependencies) {
             dependency.redirectListeners()
-        }
+
     }
 
     fun handleCompatibilityConfig() {

src/main/kotlin/xyz/alexcrea/cuanvil/dependency/plugins/ToolStatsDependency.kt

@@ -0,0 +1,35 @@
+package xyz.alexcrea.cuanvil.dependency.plugins
+
+import lol.hyper.toolstats.tools.ItemChecker
+import org.bukkit.event.inventory.InventoryClickEvent
+import org.bukkit.inventory.ItemStack
+import org.bukkit.plugin.Plugin
+import org.bukkit.plugin.RegisteredListener
+import xyz.alexcrea.cuanvil.listener.PrepareAnvilListener
+import java.lang.reflect.Method
+
+class ToolStatsDependency(plugin: Plugin) : GenericPluginDependency(plugin) {
+
+    // Sadly, getTokens function is private, so I need to do that
+    private val getTokenMethod: Method =
+        ItemChecker::class.java.getDeclaredMethod("getTokens", ItemStack::class.java);
+
+    init {
+        getTokenMethod.trySetAccessible()
+    }
+
+    override fun postAnvilEvents(): Collection<RegisteredListener> {
+        return listOf()
+    }
+
+    override fun testAnvilResult(event: InventoryClickEvent): Boolean {
+        // Check if token changes from left with result
+        val left = event.inventory.getItem(PrepareAnvilListener.ANVIL_INPUT_LEFT)
+        val result = event.inventory.getItem(PrepareAnvilListener.ANVIL_OUTPUT_SLOT)
+
+        val leftTokens = getTokenMethod.invoke(left) as Array<String>
+        val resultToken = getTokenMethod.invoke(result) as Array<String>
+
+        return !leftTokens.contentDeepEquals(resultToken);
+    }
+}