diff --git a/src/services/llm/tools/note_creation_tool.ts b/src/services/llm/tools/note_creation_tool.ts
index 58cd34dc4..d5f84df70 100644
--- a/src/services/llm/tools/note_creation_tool.ts
+++ b/src/services/llm/tools/note_creation_tool.ts
@@ -44,7 +44,21 @@ export const noteCreationToolDefinition: Tool = {
                 },
                 attributes: {
                     type: 'array',
-                    description: 'Array of attributes to set on the note (e.g., [{"name":"#tag"}, {"name":"priority", "value":"high"}])'
+                    description: 'Array of attributes to set on the note (e.g., [{"name":"#tag"}, {"name":"priority", "value":"high"}])',
+                    items: {
+                        type: 'object',
+                        properties: {
+                            name: {
+                                type: 'string',
+                                description: 'Name of the attribute'
+                            },
+                            value: {
+                                type: 'string',
+                                description: 'Value of the attribute (optional)'
+                            }
+                        },
+                        required: ['name']
+                    }
                 }
             },
             required: ['title', 'content']
diff --git a/src/services/llm/tools/tool_interfaces.ts b/src/services/llm/tools/tool_interfaces.ts
index 37be43786..9cff91f46 100644
--- a/src/services/llm/tools/tool_interfaces.ts
+++ b/src/services/llm/tools/tool_interfaces.ts
@@ -1,6 +1,6 @@
 /**
  * Tool Interfaces
- * 
+ *
  * This file defines the interfaces for the LLM tool calling system.
  */
 
@@ -27,6 +27,11 @@ export interface ToolParameter {
     type: string;
     description: string;
     enum?: string[];
+    items?: ToolParameter | {
+        type: string;
+        properties?: Record<string, ToolParameter>;
+        required?: string[];
+    };
 }
 
 /**
@@ -49,7 +54,7 @@ export interface ToolHandler {
      * Tool definition to be sent to the LLM
      */
     definition: Tool;
-    
+
     /**
      * Execute the tool with the given arguments
      */