diff --git a/oAI/Resources/oAI.help/Contents/Resources/en.lproj/index.html b/oAI/Resources/oAI.help/Contents/Resources/en.lproj/index.html
index 341ce65..1f9bca2 100644
--- a/oAI/Resources/oAI.help/Contents/Resources/en.lproj/index.html
+++ b/oAI/Resources/oAI.help/Contents/Resources/en.lproj/index.html
@@ -20,7 +20,11 @@
 
         <nav class="toc">
             <h2>Contents</h2>
-            <ul>
+            <div class="toc-search">
+                <input type="search" id="tocSearch" placeholder="Search help topics…" aria-label="Search help topics">
+            </div>
+            <p id="tocNoResults" class="toc-no-results" hidden>No topics match your search.</p>
+            <ul id="tocList">
                 <li><a href="#getting-started">Getting Started</a></li>
                 <li><a href="#providers">AI Providers &amp; API Keys</a></li>
                 <li><a href="#models">Selecting Models</a></li>
@@ -1812,5 +1816,37 @@ Whenever the user asks you to translate something, translate it to Norwegian Bok
             <p>© 2026 oAI - Rune Olsen. For support or feedback, visit <a href="https://gitlab.pm/rune/oai-swift">gitlab.pm</a> or <a href="mailto:support@fubar.pm?subject=oAI Support&body=What can I help you with?">Contact Us</a>.</p>
         </footer>
     </div>
+
+    <script>
+        (function () {
+            var searchInput = document.getElementById('tocSearch');
+            var tocList = document.getElementById('tocList');
+            var noResults = document.getElementById('tocNoResults');
+            if (!searchInput || !tocList) return;
+
+            var entries = Array.prototype.map.call(tocList.querySelectorAll('li'), function (li) {
+                var link = li.querySelector('a');
+                var id = link ? link.getAttribute('href').slice(1) : null;
+                var section = id ? document.getElementById(id) : null;
+                return {
+                    li: li,
+                    text: (section ? section.textContent : li.textContent).toLowerCase()
+                };
+            });
+
+            searchInput.addEventListener('input', function () {
+                var query = searchInput.value.trim().toLowerCase();
+                var visibleCount = 0;
+
+                entries.forEach(function (entry) {
+                    var matches = query === '' || entry.text.indexOf(query) !== -1;
+                    entry.li.hidden = !matches;
+                    if (matches) visibleCount++;
+                });
+
+                noResults.hidden = visibleCount > 0;
+            });
+        })();
+    </script>
 </body>
 </html>
diff --git a/oAI/Resources/oAI.help/Contents/Resources/en.lproj/styles.css b/oAI/Resources/oAI.help/Contents/Resources/en.lproj/styles.css
index f7e372a..7518e9c 100644
--- a/oAI/Resources/oAI.help/Contents/Resources/en.lproj/styles.css
+++ b/oAI/Resources/oAI.help/Contents/Resources/en.lproj/styles.css
@@ -101,6 +101,32 @@ nav.toc h2 {
     margin-bottom: 16px;
 }
 
+.toc-search {
+    margin-bottom: 16px;
+}
+
+.toc-search input[type="search"] {
+    width: 100%;
+    font-family: inherit;
+    font-size: 15px;
+    padding: 10px 14px;
+    color: var(--text-primary);
+    background: var(--background);
+    border: 1px solid var(--border);
+    border-radius: 8px;
+    outline: none;
+}
+
+.toc-search input[type="search"]:focus {
+    border-color: var(--primary-color);
+}
+
+.toc-no-results {
+    font-size: 14px;
+    color: var(--text-secondary);
+    margin-bottom: 0;
+}
+
 nav.toc ul {
     list-style: none;
 }