diff --git a/src/frontend/lib/utils/document_builder.dart b/src/frontend/lib/utils/document_builder.dart
index d21db3a9..1f7bcff9 100644
--- a/src/frontend/lib/utils/document_builder.dart
+++ b/src/frontend/lib/utils/document_builder.dart
@@ -1,3 +1,5 @@
+import 'dart:js_interop';
+
 import 'package:flutter/material.dart';
 import 'package:owlistic/core/theme.dart';
 import 'package:owlistic/utils/data_converter.dart';
@@ -28,6 +30,7 @@ class DocumentBuilder {
 
   // Plugins  
   late final ActionTagsPlugin _inlineCommandsPlugin;
+  late final PatternTagPlugin _inlineMetadataPlugin;
 
   // Add instance of AttributedTextUtils
   static final AttributedTextUtils _attributedTextUtils = AttributedTextUtils();
@@ -100,10 +103,18 @@ class DocumentBuilder {
         createDefaultDocumentEditor(document: _document, composer: _composer);
 
     // Add action tags listener for inline commands
-    _inlineCommandsPlugin = ActionTagsPlugin();
+    _inlineCommandsPlugin = ActionTagsPlugin(
+      tagRule: const TagRule(trigger: "/", excludedCharacters: {" "})
+    );
     _inlineCommandsPlugin.attach(_editor);
     _inlineCommandsPlugin.composingActionTag.addListener(_handleInlineCommand);
 
+    // Add pattern tags listener for inline metadata (due-date, assignee, etc)
+    _inlineMetadataPlugin = PatternTagPlugin(
+      tagRule: const TagRule(trigger: "!", excludedCharacters: {" "})
+    );
+    _inlineMetadataPlugin.attach(_editor);
+    _inlineMetadataPlugin.tagIndex.addListener(_handleInlineMetadata);
 
     // Create focus node
     _editorFocusNode = FocusNode();
@@ -116,6 +127,8 @@ class DocumentBuilder {
   void dispose() {
     _inlineCommandsPlugin.composingActionTag.removeListener(_handleInlineCommand);
     _inlineCommandsPlugin.detach(_editor);
+    _inlineMetadataPlugin.tagIndex.removeListener(_handleInlineMetadata);
+    _inlineMetadataPlugin.detach(_editor);
     _editorFocusNode.dispose();
     _composer.dispose();
     _editor.dispose();
@@ -190,6 +203,30 @@ class DocumentBuilder {
     }
   }
 
+  void _handleInlineMetadata() {
+    for (final node in _document) {
+      if (node is! TextNode) {
+        continue;
+      }
+
+      final tags = _inlineMetadataPlugin.tagIndex.getTagsInTextNode(node.id);
+
+      for (final tag in tags) {
+        final action = node.text.substring(tag.startOffset + 1, tag.endOffset);
+        final actionText = node.text.substring(tag.endOffset);
+        switch (action) {
+          case 'due':
+            _logger.info("Due Date: ${actionText}");
+            break;
+          case 'at':
+          case 'assign':
+            _logger.info("Assignee: ${actionText}");
+            break;
+        }
+      }
+    }
+  }
+
   // Add document structure change listener to detect new/deleted nodes
   void addDocumentStructureListener(void Function(dynamic) listener) {
     _document.addListener(listener);
@@ -1363,8 +1400,10 @@ class DocumentBuilder {
             MarkdownInlineUpstreamSyntaxPlugin(
               parsers: const [ StyleUpstreamMarkdownSyntaxParser() ]
             ),
-            // Tasks
-            _actionTagPlugin,
+            // Inline Commands
+            _inlineCommandsPlugin,
+            // Inline Metadata
+            _inlineMetadataPlugin,
           }),
       )
     );