diff --git a/api/src/main/java/kr/toxicity/model/api/nms/HitBoxListener.java b/api/src/main/java/kr/toxicity/model/api/nms/HitBoxListener.java
index 569a1983..2762db8a 100644
--- a/api/src/main/java/kr/toxicity/model/api/nms/HitBoxListener.java
+++ b/api/src/main/java/kr/toxicity/model/api/nms/HitBoxListener.java
@@ -7,6 +7,8 @@
 package kr.toxicity.model.api.nms;
 
 import kr.toxicity.model.api.event.ModelDamageSource;
+import kr.toxicity.model.api.event.ModelInteractAtEvent;
+import kr.toxicity.model.api.event.ModelInteractEvent;
 import kr.toxicity.model.api.platform.PlatformEntity;
 import org.jetbrains.annotations.NotNull;
 
@@ -49,6 +51,8 @@ public interface HitBoxListener {
         return new Builder()
                 .sync(this::sync)
                 .damage(this::damage)
+                .interact(this::interact)
+                .interactAt(this::interactAt)
                 .remove(this::remove)
                 .mount(this::mount)
                 .dismount(this::dismount);
@@ -63,12 +67,16 @@ class Builder {
 
         private static final Consumer<HitBox> DEFAULT_SYNC = h -> {};
         private static final OnDamage DEFAULT_DAMAGE = (h, s, d) -> false;
+        private static final Consumer<ModelInteractEvent> DEFAULT_INTERACT = h -> {};
+        private static final Consumer<ModelInteractAtEvent> DEFAULT_INTERACT_AT = h -> {};
         private static final Consumer<HitBox> DEFAULT_REMOVE = h -> {};
         private static final BiConsumer<HitBox, PlatformEntity> DEFAULT_MOUNT = (h, e) -> {};
         private static final BiConsumer<HitBox, PlatformEntity> DEFAULT_DISMOUNT = (h, e) -> {};
 
         private Consumer<HitBox> sync = DEFAULT_SYNC;
         private OnDamage damage = DEFAULT_DAMAGE;
+        private Consumer<ModelInteractEvent> interact = DEFAULT_INTERACT;
+        private Consumer<ModelInteractAtEvent> interactAt = DEFAULT_INTERACT_AT;
         private Consumer<HitBox> remove = DEFAULT_REMOVE;
         private BiConsumer<HitBox, PlatformEntity> mount = DEFAULT_MOUNT;
         private BiConsumer<HitBox, PlatformEntity> dismount = DEFAULT_DISMOUNT;
@@ -103,6 +111,30 @@ private Builder() {
             return this;
         }
 
+        /**
+         * Adds an interact handler.
+         *
+         * @param interact the interact handler
+         * @return this builder
+         * @since 2.0.2
+         */
+        public @NotNull Builder interact(@NotNull Consumer<ModelInteractEvent> interact) {
+            this.interact = this.interact == DEFAULT_INTERACT ? interact : this.interact.andThen(interact);
+            return this;
+        }
+
+        /**
+         * Adds an interact-at handler.
+         *
+         * @param interactAt the interact-at handler
+         * @return this builder
+         * @since 2.0.2
+         */
+        public @NotNull Builder interactAt(@NotNull Consumer<ModelInteractAtEvent> interactAt) {
+            this.interactAt = this.interactAt == DEFAULT_INTERACT_AT ? interactAt : this.interactAt.andThen(interactAt);
+            return this;
+        }
+
         /**
          * Adds a remove handler.
          *
@@ -157,6 +189,16 @@ public boolean damage(@NotNull HitBox hitBox, @NotNull ModelDamageSource source,
                     return Builder.this.damage.event(hitBox, source, damage);
                 }
 
+                @Override
+                public void interact(@NotNull ModelInteractEvent event) {
+                    interact.accept(event);
+                }
+
+                @Override
+                public void interactAt(@NotNull ModelInteractAtEvent event) {
+                    interactAt.accept(event);
+                }
+
                 @Override
                 public void remove(@NotNull HitBox hitBox) {
                     remove.accept(hitBox);
@@ -224,6 +266,22 @@ interface OnDamage {
      */
     boolean damage(@NotNull HitBox hitBox, @NotNull ModelDamageSource source, double damage);
 
+    /**
+     * Called when the hitbox receives an interaction.
+     *
+     * @param event the interaction event
+     * @since 2.0.2
+     */
+    void interact(@NotNull ModelInteractEvent event);
+
+    /**
+     * Called when the hitbox receives an interaction at a specific position.
+     *
+     * @param event the interaction-at event
+     * @since 2.0.2
+     */
+    void interactAt(@NotNull ModelInteractAtEvent event);
+
     /**
      * Called when the hitbox is removed.
      *
diff --git a/api/src/main/java/kr/toxicity/model/api/tracker/Tracker.java b/api/src/main/java/kr/toxicity/model/api/tracker/Tracker.java
index 3504499d..70249636 100644
--- a/api/src/main/java/kr/toxicity/model/api/tracker/Tracker.java
+++ b/api/src/main/java/kr/toxicity/model/api/tracker/Tracker.java
@@ -38,6 +38,7 @@
 import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.function.BiConsumer;
+import java.util.function.BiFunction;
 import java.util.function.BiPredicate;
 import java.util.function.Predicate;
 import java.util.function.Supplier;
@@ -678,6 +679,26 @@ public boolean replace(@NotNull Predicate<RenderedBone> filter, @NotNull String
 
     //--- Update action ---
 
+    /**
+     * Registers a hitbox-listener builder hook that is applied when hitboxes are created.
+     * <p>
+     * This delegates to {@link kr.toxicity.model.api.bone.BoneEventDispatcher#handleCreateHitBox(BiFunction)}
+     * in this tracker's render pipeline event dispatcher.
+     * </p>
+     *
+     * <pre>{@code
+     * tracker.listenHitBox((bone, builder) -> builder.interact(event -> {
+     *     // custom interaction handling
+     * }));
+     * }</pre>
+     *
+     * @param function the hitbox listener builder transformer
+     * @since 2.0.2
+     */
+    public void listenHitBox(@NotNull BiFunction<RenderedBone, HitBoxListener.Builder, HitBoxListener.Builder> function) {
+        pipeline.eventDispatcher().handleCreateHitBox(function);
+    }
+
     /**
      * Creates a hitbox for bones matching a predicate.
      *
diff --git a/nms/v1_21_R1/src/main/kotlin/kr/toxicity/model/bukkit/nms/v1_21_R1/HitBoxImpl.kt b/nms/v1_21_R1/src/main/kotlin/kr/toxicity/model/bukkit/nms/v1_21_R1/HitBoxImpl.kt
index 07bfd05e..b0224cc1 100644
--- a/nms/v1_21_R1/src/main/kotlin/kr/toxicity/model/bukkit/nms/v1_21_R1/HitBoxImpl.kt
+++ b/nms/v1_21_R1/src/main/kotlin/kr/toxicity/model/bukkit/nms/v1_21_R1/HitBoxImpl.kt
@@ -345,6 +345,7 @@ internal class HitBoxImpl(
             MAIN_HAND -> ModelInteractionHand.RIGHT
             OFF_HAND -> ModelInteractionHand.LEFT
         })
+        listener.interact(interact)
         if (!interact.call().triggered()) return InteractionResult.FAIL
         (player as ServerPlayer).connection.handleInteract(ServerboundInteractPacket.createInteractionPacket(delegate, player.isShiftKeyDown, hand))
         return InteractionResult.SUCCESS
@@ -356,6 +357,7 @@ internal class HitBoxImpl(
             MAIN_HAND -> ModelInteractionHand.RIGHT
             OFF_HAND -> ModelInteractionHand.LEFT
         }, vec.toBukkit())
+        listener.interactAt(interact)
         if (!interact.call().triggered()) return InteractionResult.FAIL
         (player as ServerPlayer).connection.handleInteract(ServerboundInteractPacket.createInteractionPacket(delegate, player.isShiftKeyDown, hand, vec))
         return InteractionResult.SUCCESS
diff --git a/nms/v1_21_R3/src/main/kotlin/kr/toxicity/model/bukkit/nms/v1_21_R3/HitBoxImpl.kt b/nms/v1_21_R3/src/main/kotlin/kr/toxicity/model/bukkit/nms/v1_21_R3/HitBoxImpl.kt
index 5c783dbf..5cfe0535 100644
--- a/nms/v1_21_R3/src/main/kotlin/kr/toxicity/model/bukkit/nms/v1_21_R3/HitBoxImpl.kt
+++ b/nms/v1_21_R3/src/main/kotlin/kr/toxicity/model/bukkit/nms/v1_21_R3/HitBoxImpl.kt
@@ -358,6 +358,7 @@ internal class HitBoxImpl(
             MAIN_HAND -> ModelInteractionHand.RIGHT
             OFF_HAND -> ModelInteractionHand.LEFT
         })
+        listener.interact(interact)
         if (!interact.call().triggered()) return InteractionResult.FAIL
         (player as ServerPlayer).connection.handleInteract(ServerboundInteractPacket.createInteractionPacket(delegate, player.isShiftKeyDown, hand))
         return InteractionResult.SUCCESS
@@ -369,6 +370,7 @@ internal class HitBoxImpl(
             MAIN_HAND -> ModelInteractionHand.RIGHT
             OFF_HAND -> ModelInteractionHand.LEFT
         }, vec.toBukkit())
+        listener.interactAt(interact)
         if (!interact.call().triggered()) return InteractionResult.FAIL
         (player as ServerPlayer).connection.handleInteract(ServerboundInteractPacket.createInteractionPacket(delegate, player.isShiftKeyDown, hand, vec))
         return InteractionResult.SUCCESS
diff --git a/nms/v1_21_R4/src/main/kotlin/kr/toxicity/model/bukkit/nms/v1_21_R4/HitBoxImpl.kt b/nms/v1_21_R4/src/main/kotlin/kr/toxicity/model/bukkit/nms/v1_21_R4/HitBoxImpl.kt
index c175ece5..ee44e6cf 100644
--- a/nms/v1_21_R4/src/main/kotlin/kr/toxicity/model/bukkit/nms/v1_21_R4/HitBoxImpl.kt
+++ b/nms/v1_21_R4/src/main/kotlin/kr/toxicity/model/bukkit/nms/v1_21_R4/HitBoxImpl.kt
@@ -364,6 +364,7 @@ internal class HitBoxImpl(
             MAIN_HAND -> ModelInteractionHand.RIGHT
             OFF_HAND -> ModelInteractionHand.LEFT
         })
+        listener.interact(interact)
         if (!interact.call().triggered()) return InteractionResult.FAIL
         (player as ServerPlayer).connection.handleInteract(ServerboundInteractPacket.createInteractionPacket(delegate, player.isShiftKeyDown, hand))
         return InteractionResult.SUCCESS
@@ -375,6 +376,7 @@ internal class HitBoxImpl(
             MAIN_HAND -> ModelInteractionHand.RIGHT
             OFF_HAND -> ModelInteractionHand.LEFT
         }, vec.toBukkit())
+        listener.interactAt(interact)
         if (!interact.call().triggered()) return InteractionResult.FAIL
         (player as ServerPlayer).connection.handleInteract(ServerboundInteractPacket.createInteractionPacket(delegate, player.isShiftKeyDown, hand, vec))
         return InteractionResult.SUCCESS
diff --git a/nms/v1_21_R5/src/main/kotlin/kr/toxicity/model/bukkit/nms/v1_21_R5/HitBoxImpl.kt b/nms/v1_21_R5/src/main/kotlin/kr/toxicity/model/bukkit/nms/v1_21_R5/HitBoxImpl.kt
index cf44486f..2c0ec36e 100644
--- a/nms/v1_21_R5/src/main/kotlin/kr/toxicity/model/bukkit/nms/v1_21_R5/HitBoxImpl.kt
+++ b/nms/v1_21_R5/src/main/kotlin/kr/toxicity/model/bukkit/nms/v1_21_R5/HitBoxImpl.kt
@@ -365,6 +365,7 @@ internal class HitBoxImpl(
             MAIN_HAND -> ModelInteractionHand.RIGHT
             OFF_HAND -> ModelInteractionHand.LEFT
         })
+        listener.interact(interact)
         if (!interact.call().triggered()) return InteractionResult.FAIL
         (player as ServerPlayer).connection.handleInteract(ServerboundInteractPacket.createInteractionPacket(delegate, player.isShiftKeyDown, hand))
         return InteractionResult.SUCCESS
@@ -376,6 +377,7 @@ internal class HitBoxImpl(
             MAIN_HAND -> ModelInteractionHand.RIGHT
             OFF_HAND -> ModelInteractionHand.LEFT
         }, vec.toBukkit())
+        listener.interactAt(interact)
         if (!interact.call().triggered()) return InteractionResult.FAIL
         (player as ServerPlayer).connection.handleInteract(ServerboundInteractPacket.createInteractionPacket(delegate, player.isShiftKeyDown, hand, vec))
         return InteractionResult.SUCCESS
diff --git a/nms/v1_21_R6/src/main/kotlin/kr/toxicity/model/bukkit/nms/v1_21_R6/HitBoxImpl.kt b/nms/v1_21_R6/src/main/kotlin/kr/toxicity/model/bukkit/nms/v1_21_R6/HitBoxImpl.kt
index 5272f80d..649a235b 100644
--- a/nms/v1_21_R6/src/main/kotlin/kr/toxicity/model/bukkit/nms/v1_21_R6/HitBoxImpl.kt
+++ b/nms/v1_21_R6/src/main/kotlin/kr/toxicity/model/bukkit/nms/v1_21_R6/HitBoxImpl.kt
@@ -365,6 +365,7 @@ internal class HitBoxImpl(
             MAIN_HAND -> ModelInteractionHand.RIGHT
             OFF_HAND -> ModelInteractionHand.LEFT
         })
+        listener.interact(interact)
         if (!interact.call().triggered()) return InteractionResult.FAIL
         (player as ServerPlayer).connection.handleInteract(ServerboundInteractPacket.createInteractionPacket(delegate, player.isShiftKeyDown, hand))
         return InteractionResult.SUCCESS
@@ -376,6 +377,7 @@ internal class HitBoxImpl(
             MAIN_HAND -> ModelInteractionHand.RIGHT
             OFF_HAND -> ModelInteractionHand.LEFT
         }, vec.toBukkit())
+        listener.interactAt(interact)
         if (!interact.call().triggered()) return InteractionResult.FAIL
         (player as ServerPlayer).connection.handleInteract(ServerboundInteractPacket.createInteractionPacket(delegate, player.isShiftKeyDown, hand, vec))
         return InteractionResult.SUCCESS
diff --git a/nms/v1_21_R7/src/main/kotlin/kr/toxicity/model/bukkit/nms/v1_21_R7/HitBoxImpl.kt b/nms/v1_21_R7/src/main/kotlin/kr/toxicity/model/bukkit/nms/v1_21_R7/HitBoxImpl.kt
index fb1b3199..7ef2f4d1 100644
--- a/nms/v1_21_R7/src/main/kotlin/kr/toxicity/model/bukkit/nms/v1_21_R7/HitBoxImpl.kt
+++ b/nms/v1_21_R7/src/main/kotlin/kr/toxicity/model/bukkit/nms/v1_21_R7/HitBoxImpl.kt
@@ -365,6 +365,7 @@ internal class HitBoxImpl(
             MAIN_HAND -> ModelInteractionHand.RIGHT
             OFF_HAND -> ModelInteractionHand.LEFT
         })
+        listener.interact(interact)
         if (!interact.call().triggered()) return InteractionResult.FAIL
         (player as ServerPlayer).connection.handleInteract(ServerboundInteractPacket.createInteractionPacket(delegate, player.isShiftKeyDown, hand))
         return InteractionResult.SUCCESS
@@ -376,6 +377,7 @@ internal class HitBoxImpl(
             MAIN_HAND -> ModelInteractionHand.RIGHT
             OFF_HAND -> ModelInteractionHand.LEFT
         }, vec.toBukkit())
+        listener.interactAt(interact)
         if (!interact.call().triggered()) return InteractionResult.FAIL
         (player as ServerPlayer).connection.handleInteract(ServerboundInteractPacket.createInteractionPacket(delegate, player.isShiftKeyDown, hand, vec))
         return InteractionResult.SUCCESS
diff --git a/platform/fabric/src/main/kotlin/kr/toxicity/model/impl/fabric/entity/HitBoxEntityImpl.kt b/platform/fabric/src/main/kotlin/kr/toxicity/model/impl/fabric/entity/HitBoxEntityImpl.kt
index 7dcce353..e5a12cb1 100644
--- a/platform/fabric/src/main/kotlin/kr/toxicity/model/impl/fabric/entity/HitBoxEntityImpl.kt
+++ b/platform/fabric/src/main/kotlin/kr/toxicity/model/impl/fabric/entity/HitBoxEntityImpl.kt
@@ -419,20 +419,22 @@ class HitBoxEntityImpl(
         if (player === delegate) {
             return InteractionResult.FAIL
         }
+        val serverPlayer = player as ServerPlayer
 
         val interact = ModelInteractEvent(
-            (player as ServerPlayer).connection.wrap(),
+            serverPlayer.connection.wrap(),
             this,
             when (hand) {
                 InteractionHand.MAIN_HAND -> ModelInteractionHand.RIGHT
                 InteractionHand.OFF_HAND -> ModelInteractionHand.LEFT
             }
         )
+        listener.interact(interact)
         if (!interact.call().triggered()) {
             return InteractionResult.FAIL
         }
 
-        player.connection.handleInteract(
+        serverPlayer.connection.handleInteract(
             ServerboundInteractPacket.createInteractionPacket(
                 delegate,
                 player.isShiftKeyDown,
@@ -446,9 +448,10 @@ class HitBoxEntityImpl(
         if (player === delegate) {
             return InteractionResult.FAIL
         }
+        val serverPlayer = player as ServerPlayer
 
         val interact = ModelInteractAtEvent(
-            (player as ServerPlayer).connection.wrap(),
+            serverPlayer.connection.wrap(),
             this,
             when (hand) {
                 InteractionHand.MAIN_HAND -> ModelInteractionHand.RIGHT
@@ -456,12 +459,12 @@ class HitBoxEntityImpl(
             },
             vec.toVector3f()
         )
-
+        listener.interactAt(interact)
         if (!interact.call().triggered()) {
             return InteractionResult.FAIL
         }
 
-        player.connection.handleInteract(
+        serverPlayer.connection.handleInteract(
             ServerboundInteractPacket.createInteractionPacket(
                 delegate,
                 player.isShiftKeyDown,