Fix memory deletion not removing from vector store (mem0ai#3610)

Author: frederikb96

openmemory/api/app/mcp_server.py

@@ -314,7 +314,7 @@ async def delete_all_memories() -> str:
             # delete the accessible memories only
             for memory_id in accessible_memory_ids:
                 try:
-                    memory_client.delete(memory_id)
+                    memory_client.delete(str(memory_id))
                 except Exception as delete_error:
                     logging.warning(f"Failed to delete memory {memory_id} from vector store: {delete_error}")
 

openmemory/api/app/routers/memories.py

@@ -360,8 +360,32 @@ async def delete_memories(
     if not user:
         raise HTTPException(status_code=404, detail="User not found")
 
+    # Get memory client to delete from vector store
+    try:
+        memory_client = get_memory_client()
+        if not memory_client:
+            raise HTTPException(
+                status_code=503,
+                detail="Memory client is not available"
+            )
+    except HTTPException:
+        raise
+    except Exception as client_error:
+        logging.error(f"Memory client initialization failed: {client_error}")
+        raise HTTPException(
+            status_code=503,
+            detail=f"Memory service unavailable: {str(client_error)}"
+        )
+
+    # Delete from vector store then mark as deleted in database
     for memory_id in request.memory_ids:
+        try:
+            memory_client.delete(str(memory_id))
+        except Exception as delete_error:
+            logging.warning(f"Failed to delete memory {memory_id} from vector store: {delete_error}")
+
         update_memory_state(db, memory_id, MemoryState.deleted, user.id)
+
     return {"message": f"Successfully deleted {len(request.memory_ids)} memories"}