diff --git a/Partner-Core/src/main/java/work/slhaf/partner/core/cognition/CognitionCapability.java b/Partner-Core/src/main/java/work/slhaf/partner/core/cognition/CognitionCapability.java
index 4f01ffc4..1f8eca5c 100644
--- a/Partner-Core/src/main/java/work/slhaf/partner/core/cognition/CognitionCapability.java
+++ b/Partner-Core/src/main/java/work/slhaf/partner/core/cognition/CognitionCapability.java
@@ -57,6 +57,16 @@ public interface CognitionCapability {
      */
     boolean bindActiveEntity(String runtimeId, String entityUuid);
 
+    /**
+     * Rename the canonical subject of a known entity and refresh entity/active-entity indexes.
+     */
+    boolean renameEntitySubject(String entityUuid, String newSubject);
+
+    /**
+     * Add an alias or mention form for a known entity and refresh entity indexes.
+     */
+    boolean addEntityAlias(String entityUuid, String alias, boolean deprecated);
+
     /**
      * Add or replace an impression on a known entity and refresh all entity indexes.
      */
diff --git a/Partner-Core/src/main/java/work/slhaf/partner/core/cognition/impression/ImpressionCore.java b/Partner-Core/src/main/java/work/slhaf/partner/core/cognition/impression/ImpressionCore.java
index fcd6c946..3392d4f4 100644
--- a/Partner-Core/src/main/java/work/slhaf/partner/core/cognition/impression/ImpressionCore.java
+++ b/Partner-Core/src/main/java/work/slhaf/partner/core/cognition/impression/ImpressionCore.java
@@ -153,6 +153,45 @@ public class ImpressionCore implements StateSerializable {
         return true;
     }
 
+    /**
+     * Rename the canonical subject of a known entity and keep its previous subject as a historical alias.
+     */
+    @CapabilityMethod
+    public boolean renameEntitySubject(String entityUuid, String newSubject) {
+        Entity entity = knownEntitiesByUuid.get(entityUuid);
+        if (entity == null || newSubject == null || newSubject.isBlank()) {
+            return false;
+        }
+
+        boolean renamed = entity.renameSubject(newSubject.trim());
+        if (!renamed) {
+            return false;
+        }
+
+        refreshKnownEntityIndexes(entity);
+        syncBoundActiveEntitySubjects(entity);
+        return true;
+    }
+
+    /**
+     * Add an alias or mention form for a known entity and refresh search indexes.
+     */
+    @CapabilityMethod
+    public boolean addEntityAlias(String entityUuid, String alias, boolean deprecated) {
+        Entity entity = knownEntitiesByUuid.get(entityUuid);
+        if (entity == null || alias == null || alias.isBlank()) {
+            return false;
+        }
+
+        boolean added = entity.addAlias(alias.trim(), deprecated);
+        if (!added) {
+            return false;
+        }
+
+        refreshKnownEntityIndexes(entity);
+        return true;
+    }
+
     /**
      * Update a known entity impression through the core so text/vector indexes stay consistent.
      * newImpression can be null or blank to update the existing impression in place.
@@ -355,6 +394,20 @@ public class ImpressionCore implements StateSerializable {
         refreshKnownEntityTextSearch(entity);
     }
 
+    private void syncBoundActiveEntitySubjects(Entity entity) {
+        List<ActiveEntity> boundEntities;
+        synchronized (activeEntities) {
+            boundEntities = activeEntities.stream()
+                    .filter(activeEntity -> entity.getUuid().equals(activeEntity.getBoundEntityUuid()))
+                    .toList();
+        }
+
+        boundEntities.forEach(activeEntity -> {
+            activeEntity.updateSubject(entity.getSubject());
+            refreshActiveEntityTextSearch(activeEntity);
+        });
+    }
+
     /**
      * Replace text-search documents for one known entity.
      */
diff --git a/Partner-Core/src/test/java/work/slhaf/partner/module/communication/CommunicationProducerTest.java b/Partner-Core/src/test/java/work/slhaf/partner/module/communication/CommunicationProducerTest.java
index 0ec5307b..cb9045cd 100644
--- a/Partner-Core/src/test/java/work/slhaf/partner/module/communication/CommunicationProducerTest.java
+++ b/Partner-Core/src/test/java/work/slhaf/partner/module/communication/CommunicationProducerTest.java
@@ -174,6 +174,16 @@ class CommunicationProducerTest {
             return false;
         }
 
+        @Override
+        public boolean renameEntitySubject(String entityUuid, String newSubject) {
+            return false;
+        }
+
+        @Override
+        public boolean addEntityAlias(String entityUuid, String alias, boolean deprecated) {
+            return false;
+        }
+
         @Override
         public boolean updateEntityImpression(String entityUuid, String impression, String newImpression, double confidence) {
             return false;
diff --git a/Partner-Core/src/test/java/work/slhaf/partner/module/memory/runtime/MemoryRuntimeTest.java b/Partner-Core/src/test/java/work/slhaf/partner/module/memory/runtime/MemoryRuntimeTest.java
index 778740d2..d1eb94ef 100644
--- a/Partner-Core/src/test/java/work/slhaf/partner/module/memory/runtime/MemoryRuntimeTest.java
+++ b/Partner-Core/src/test/java/work/slhaf/partner/module/memory/runtime/MemoryRuntimeTest.java
@@ -127,6 +127,16 @@ class MemoryRuntimeTest {
                 return false;
             }
 
+            @Override
+            public boolean renameEntitySubject(String entityUuid, String newSubject) {
+                return false;
+            }
+
+            @Override
+            public boolean addEntityAlias(String entityUuid, String alias, boolean deprecated) {
+                return false;
+            }
+
             @Override
             public boolean updateEntityImpression(String entityUuid, String impression, String newImpression, double confidence) {
                 return false;