diff --git a/client/src/components/SidePanel/Agents/Tools/ItemDialog/__tests__/BuiltinSection.spec.tsx b/client/src/components/SidePanel/Agents/Tools/ItemDialog/__tests__/BuiltinSection.spec.tsx
index ccc13227cbd..3060db3ff5c 100644
--- a/client/src/components/SidePanel/Agents/Tools/ItemDialog/__tests__/BuiltinSection.spec.tsx
+++ b/client/src/components/SidePanel/Agents/Tools/ItemDialog/__tests__/BuiltinSection.spec.tsx
@@ -1,7 +1,7 @@
 import '@testing-library/jest-dom/extend-expect';
-import { MemoryScope } from 'librechat-data-provider';
 import { useForm, FormProvider, useWatch } from 'react-hook-form';
 import { render, screen, fireEvent } from '@testing-library/react';
+import { MemoryScope, ArtifactModes } from 'librechat-data-provider';
 import type { ReactNode } from 'react';
 import type { AgentForm } from '~/common';
 import BuiltinSection from '../sections/BuiltinSection';
@@ -109,3 +109,37 @@ describe('BuiltinSection Run Code settings', () => {
     expect(screen.getByLabelText('com_ui_agent_git_email')).toBeInTheDocument();
   });
 });
+
+describe('BuiltinSection artifacts mode docs link', () => {
+  const docsLink = () => screen.queryByRole('link', { name: 'com_ui_artifacts_mode_custom_docs' });
+
+  test('links Custom mode to the custom instructions docs in a new tab', () => {
+    renderSection('artifacts', { artifacts: ArtifactModes.CUSTOM });
+
+    const link = docsLink();
+    expect(link).toHaveAttribute(
+      'href',
+      'https://www.librechat.ai/docs/features/artifacts#custom-instructions',
+    );
+    expect(link).toHaveAttribute('target', '_blank');
+    expect(link).toHaveAttribute('rel', 'noopener noreferrer');
+    expect(link).toHaveTextContent('com_ui_learn_more');
+    expect(screen.getByText(/com_ui_artifacts_mode_custom_info/)).toContainElement(link);
+  });
+
+  test.each([ArtifactModes.DEFAULT, ArtifactModes.SHADCNUI])(
+    'shows no docs link for the %s mode',
+    (mode) => {
+      renderSection('artifacts', { artifacts: mode });
+      expect(docsLink()).toBeNull();
+    },
+  );
+
+  test('shows the link after switching to Custom', () => {
+    renderSection('artifacts', { artifacts: ArtifactModes.DEFAULT });
+    expect(docsLink()).toBeNull();
+
+    fireEvent.click(screen.getByRole('radio', { name: 'com_ui_artifacts_mode_custom' }));
+    expect(docsLink()).toBeInTheDocument();
+  });
+});
diff --git a/client/src/components/SidePanel/Agents/Tools/ItemDialog/sections/BuiltinSection.tsx b/client/src/components/SidePanel/Agents/Tools/ItemDialog/sections/BuiltinSection.tsx
index d8f3d63ee05..27943babdd1 100644
--- a/client/src/components/SidePanel/Agents/Tools/ItemDialog/sections/BuiltinSection.tsx
+++ b/client/src/components/SidePanel/Agents/Tools/ItemDialog/sections/BuiltinSection.tsx
@@ -23,10 +23,14 @@ interface Props {
   description?: string;
 }
 
+const ARTIFACTS_CUSTOM_DOCS_URL =
+  'https://www.librechat.ai/docs/features/artifacts#custom-instructions';
+
 const ARTIFACT_MODES: Array<{
   value: string;
   labelKey: TranslationKeys;
   infoKey?: TranslationKeys;
+  docs?: { url: string; labelKey: TranslationKeys };
 }> = [
   {
     value: ArtifactModes.DEFAULT,
@@ -42,6 +46,7 @@ const ARTIFACT_MODES: Array<{
     value: ArtifactModes.CUSTOM,
     labelKey: 'com_ui_artifacts_mode_custom',
     infoKey: 'com_ui_artifacts_mode_custom_info',
+    docs: { url: ARTIFACTS_CUSTOM_DOCS_URL, labelKey: 'com_ui_artifacts_mode_custom_docs' },
   },
 ];
 
@@ -71,7 +76,23 @@ function ArtifactsConfig({ value, onChange }: ArtifactsConfigProps) {
         aria-labelledby="artifacts-mode-label"
       />
       {active?.infoKey ? (
-        <p className="text-text-secondary text-sm leading-relaxed">{localize(active.infoKey)}</p>
+        <p className="text-text-secondary text-sm leading-relaxed">
+          {localize(active.infoKey)}
+          {active.docs ? (
+            <>
+              {' '}
+              <a
+                href={active.docs.url}
+                target="_blank"
+                rel="noopener noreferrer"
+                aria-label={localize(active.docs.labelKey)}
+                className="text-link hover:text-link-hover underline"
+              >
+                {localize('com_ui_learn_more')}
+              </a>
+            </>
+          ) : null}
+        </p>
       ) : null}
     </div>
   );
diff --git a/client/src/locales/en/translation.json b/client/src/locales/en/translation.json
index 293183153d0..2e5d5b3e6ef 100644
--- a/client/src/locales/en/translation.json
+++ b/client/src/locales/en/translation.json
@@ -1264,7 +1264,8 @@
   "com_ui_artifacts": "Artifacts",
   "com_ui_artifacts_mode": "Mode",
   "com_ui_artifacts_mode_custom": "Custom",
-  "com_ui_artifacts_mode_custom_info": "Keeps artifact rendering on but injects no built-in instructions. Write your own in the agent's instructions for full control.",
+  "com_ui_artifacts_mode_custom_docs": "Learn more about writing custom artifact instructions (opens in a new tab)",
+  "com_ui_artifacts_mode_custom_info": "Keeps artifact rendering on but injects no built-in instructions. The agent's instructions must teach the artifact syntax and the types it may use.",
   "com_ui_artifacts_mode_default": "Normal",
   "com_ui_artifacts_mode_default_info": "Standard artifact instructions: the agent renders React, HTML, SVG, Markdown, and Mermaid inline.",
   "com_ui_artifacts_mode_shadcn": "shadcn/ui",
@@ -1945,6 +1946,7 @@
   "com_ui_latest_activity": "Latest activity",
   "com_ui_latest_footer": "Every AI for Everyone.",
   "com_ui_latest_version": "Latest version",
+  "com_ui_learn_more": "Learn more",
   "com_ui_leave_blank_to_keep": "Leave blank to keep existing",
   "com_ui_lia_act_bounce_around": "Bounces in place",
   "com_ui_lia_act_come_closer": "Comes over to say hi",