diff --git a/api/server/routes/config.js b/api/server/routes/config.js
index ebafb05c30..583453fe4a 100644
--- a/api/server/routes/config.js
+++ b/api/server/routes/config.js
@@ -75,6 +75,7 @@ router.get('/', async function (req, res) {
         process.env.SHOW_BIRTHDAY_ICON === '',
       helpAndFaqURL: process.env.HELP_AND_FAQ_URL || 'https://librechat.ai',
       interface: req.app.locals.interfaceConfig,
+      turnstile: req.app.locals.turnstileConfig,
       modelSpecs: req.app.locals.modelSpecs,
       balance: req.app.locals.balance,
       sharedLinksEnabled,
diff --git a/api/server/services/AppService.js b/api/server/services/AppService.js
index 1ad3aaace6..5f119e67aa 100644
--- a/api/server/services/AppService.js
+++ b/api/server/services/AppService.js
@@ -12,6 +12,7 @@ const { initializeFirebase } = require('./Files/Firebase/initialize');
 const loadCustomConfig = require('./Config/loadCustomConfig');
 const handleRateLimits = require('./Config/handleRateLimits');
 const { loadDefaultInterface } = require('./start/interface');
+const { loadTurnstileConfig } = require('./start/turnstile');
 const { azureConfigSetup } = require('./start/azureOpenAI');
 const { processModelSpecs } = require('./start/modelSpecs');
 const { initializeS3 } = require('./Files/S3/initialize');
@@ -23,7 +24,6 @@ const { getMCPManager } = require('~/config');
 const paths = require('~/config/paths');
 
 /**
- *
  * Loads custom config and initializes app-wide variables.
  * @function AppService
  * @param {Express.Application} app - The Express application object.
@@ -74,6 +74,7 @@ const AppService = async (app) => {
   const socialLogins =
     config?.registration?.socialLogins ?? configDefaults?.registration?.socialLogins;
   const interfaceConfig = await loadDefaultInterface(config, configDefaults);
+  const turnstileConfig = loadTurnstileConfig(config, configDefaults);
 
   const defaultLocals = {
     ocr,
@@ -85,6 +86,7 @@ const AppService = async (app) => {
     availableTools,
     imageOutputType,
     interfaceConfig,
+    turnstileConfig,
     balance,
   };
 
diff --git a/api/server/services/AppService.spec.js b/api/server/services/AppService.spec.js
index 465ec9fdd6..81a017e41e 100644
--- a/api/server/services/AppService.spec.js
+++ b/api/server/services/AppService.spec.js
@@ -46,6 +46,12 @@ jest.mock('./ToolService', () => ({
     },
   }),
 }));
+jest.mock('./start/turnstile', () => ({
+  loadTurnstileConfig: jest.fn(() => ({
+    siteKey: 'default-site-key',
+    options: {},
+  })),
+}));
 
 const azureGroups = [
   {
@@ -86,6 +92,10 @@ const azureGroups = [
 
 describe('AppService', () => {
   let app;
+  const mockedTurnstileConfig = {
+    siteKey: 'default-site-key',
+    options: {},
+  };
 
   beforeEach(() => {
     app = { locals: {} };
@@ -107,6 +117,7 @@ describe('AppService', () => {
         sidePanel: true,
         presets: true,
       }),
+      turnstileConfig: mockedTurnstileConfig,
       modelSpecs: undefined,
       availableTools: {
         ExampleTool: {
diff --git a/api/server/services/start/turnstile.js b/api/server/services/start/turnstile.js
new file mode 100644
index 0000000000..ffd4545dae
--- /dev/null
+++ b/api/server/services/start/turnstile.js
@@ -0,0 +1,35 @@
+const { removeNullishValues } = require('librechat-data-provider');
+const { logger } = require('~/config');
+
+/**
+ * Loads and maps the Cloudflare Turnstile configuration.
+ *
+ * Expected config structure:
+ *
+ * turnstile:
+ *   siteKey: "your-site-key-here"
+ *   options:
+ *     language: "auto"    // "auto" or an ISO 639-1 language code (e.g. en)
+ *     size: "normal"      // Options: "normal", "compact", "flexible", or "invisible"
+ *
+ * @param {TCustomConfig | undefined} config - The loaded custom configuration.
+ * @param {TConfigDefaults} configDefaults - The custom configuration default values.
+ * @returns {TCustomConfig['turnstile']} The mapped Turnstile configuration.
+ */
+function loadTurnstileConfig(config, configDefaults) {
+  const { turnstile: customTurnstile = {} } = config ?? {};
+  const { turnstile: defaults = {} } = configDefaults;
+
+  /** @type {TCustomConfig['turnstile']} */
+  const loadedTurnstile = removeNullishValues({
+    siteKey: customTurnstile.siteKey ?? defaults.siteKey,
+    options: customTurnstile.options ?? defaults.options,
+  });
+
+  logger.info('Turnstile configuration loaded:\n' + JSON.stringify(loadedTurnstile, null, 2));
+  return loadedTurnstile;
+}
+
+module.exports = {
+  loadTurnstileConfig,
+};
diff --git a/client/package.json b/client/package.json
index 5fd9729a74..1b33c37919 100644
--- a/client/package.json
+++ b/client/package.json
@@ -34,6 +34,7 @@
     "@dicebear/collection": "^9.2.2",
     "@dicebear/core": "^9.2.2",
     "@headlessui/react": "^2.1.2",
+    "@marsidev/react-turnstile": "^1.1.0",
     "@radix-ui/react-accordion": "^1.1.2",
     "@radix-ui/react-alert-dialog": "^1.0.2",
     "@radix-ui/react-checkbox": "^1.0.3",
diff --git a/client/src/components/Auth/LoginForm.tsx b/client/src/components/Auth/LoginForm.tsx
index 2cd62d08b9..030b6323f7 100644
--- a/client/src/components/Auth/LoginForm.tsx
+++ b/client/src/components/Auth/LoginForm.tsx
@@ -1,9 +1,10 @@
 import { useForm } from 'react-hook-form';
-import React, { useState, useEffect } from 'react';
+import React, { useState, useEffect, useContext } from 'react';
+import { Turnstile } from '@marsidev/react-turnstile';
 import type { TLoginUser, TStartupConfig } from 'librechat-data-provider';
 import type { TAuthContext } from '~/common';
 import { useResendVerificationEmail, useGetStartupConfig } from '~/data-provider';
-import { useLocalize } from '~/hooks';
+import { ThemeContext, useLocalize } from '~/hooks';
 
 type TLoginFormProps = {
   onSubmit: (data: TLoginUser) => void;
@@ -14,6 +15,7 @@ type TLoginFormProps = {
 
 const LoginForm: React.FC<TLoginFormProps> = ({ onSubmit, startupConfig, error, setError }) => {
   const localize = useLocalize();
+  const { theme } = useContext(ThemeContext);
   const {
     register,
     getValues,
@@ -21,9 +23,11 @@ const LoginForm: React.FC<TLoginFormProps> = ({ onSubmit, startupConfig, error,
     formState: { errors },
   } = useForm<TLoginUser>();
   const [showResendLink, setShowResendLink] = useState<boolean>(false);
+  const [turnstileToken, setTurnstileToken] = useState<string | null>(null);
 
   const { data: config } = useGetStartupConfig();
   const useUsernameLogin = config?.ldap?.username;
+  const validTheme = theme === 'dark' ? 'dark' : 'light';
 
   useEffect(() => {
     if (error && error.includes('422') && !showResendLink) {
@@ -159,11 +163,29 @@ const LoginForm: React.FC<TLoginFormProps> = ({ onSubmit, startupConfig, error,
             {localize('com_auth_password_forgot')}
           </a>
         )}
+
+        {/* Render Turnstile only if enabled in startupConfig */}
+        {startupConfig.turnstile && (
+          <div className="my-4 flex justify-center">
+            <Turnstile
+              siteKey={startupConfig.turnstile.siteKey}
+              options={{
+                ...startupConfig.turnstile.options,
+                theme: validTheme,
+              }}
+              onSuccess={(token) => setTurnstileToken(token)}
+              onError={() => setTurnstileToken(null)}
+              onExpire={() => setTurnstileToken(null)}
+            />
+          </div>
+        )}
+
         <div className="mt-6">
           <button
             aria-label={localize('com_auth_continue')}
             data-testid="login-button"
             type="submit"
+            disabled={startupConfig.turnstile ? !turnstileToken : false}
             className="
             w-full rounded-2xl bg-green-600 px-4 py-3 text-sm font-medium text-white
             transition-colors hover:bg-green-700 dark:bg-green-600 dark:hover:bg-green-700
diff --git a/client/src/components/Auth/Registration.tsx b/client/src/components/Auth/Registration.tsx
index 047808ffea..ab5c945ac8 100644
--- a/client/src/components/Auth/Registration.tsx
+++ b/client/src/components/Auth/Registration.tsx
@@ -1,16 +1,18 @@
 import { useForm } from 'react-hook-form';
-import React, { useState } from 'react';
+import React, { useContext, useState } from 'react';
+import { Turnstile } from '@marsidev/react-turnstile';
 import { useNavigate, useOutletContext, useLocation } from 'react-router-dom';
 import { useRegisterUserMutation } from 'librechat-data-provider/react-query';
 import type { TRegisterUser, TError } from 'librechat-data-provider';
 import type { TLoginLayoutContext } from '~/common';
 import { ErrorMessage } from './ErrorMessage';
 import { Spinner } from '~/components/svg';
-import { useLocalize, TranslationKeys } from '~/hooks';
+import { useLocalize, TranslationKeys, ThemeContext } from '~/hooks';
 
 const Registration: React.FC = () => {
   const navigate = useNavigate();
   const localize = useLocalize();
+  const { theme } = useContext(ThemeContext);
   const { startupConfig, startupConfigError, isFetching } = useOutletContext<TLoginLayoutContext>();
 
   const {
@@ -24,10 +26,12 @@ const Registration: React.FC = () => {
   const [errorMessage, setErrorMessage] = useState<string>('');
   const [isSubmitting, setIsSubmitting] = useState(false);
   const [countdown, setCountdown] = useState<number>(3);
+  const [turnstileToken, setTurnstileToken] = useState<string | null>(null);
 
   const location = useLocation();
   const queryParams = new URLSearchParams(location.search);
   const token = queryParams.get('token');
+  const validTheme = theme === 'dark' ? 'dark' : 'light';
 
   const registerUser = useRegisterUserMutation({
     onMutate: () => {
@@ -178,17 +182,38 @@ const Registration: React.FC = () => {
               validate: (value: string) =>
                 value === password || localize('com_auth_password_not_match'),
             })}
+
+            {/* Render Turnstile only if enabled in startupConfig */}
+            {startupConfig?.turnstile && (
+              <div className="my-4 flex justify-center">
+                <Turnstile
+                  siteKey={startupConfig.turnstile.siteKey}
+                  options={{
+                    ...startupConfig.turnstile.options,
+                    theme: validTheme,
+                  }}
+                  onSuccess={(token) => setTurnstileToken(token)}
+                  onError={() => setTurnstileToken(null)}
+                  onExpire={() => setTurnstileToken(null)}
+                />
+              </div>
+            )}
+
             <div className="mt-6">
               <button
-                disabled={Object.keys(errors).length > 0}
+                disabled={
+                  Object.keys(errors).length > 0 ||
+                  isSubmitting ||
+                  (startupConfig?.turnstile ? !turnstileToken : false)
+                }
                 type="submit"
                 aria-label="Submit registration"
                 className="
-            w-full rounded-2xl bg-green-600 px-4 py-3 text-sm font-medium text-white
-            transition-colors hover:bg-green-700 focus:outline-none focus:ring-2
-            focus:ring-green-500 focus:ring-offset-2 disabled:opacity-50
-            disabled:hover:bg-green-600 dark:bg-green-600 dark:hover:bg-green-700
-          "
+                  w-full rounded-2xl bg-green-600 px-4 py-3 text-sm font-medium text-white
+                  transition-colors hover:bg-green-700 focus:outline-none focus:ring-2
+                  focus:ring-green-500 focus:ring-offset-2 disabled:opacity-50
+                  disabled:hover:bg-green-600 dark:bg-green-600 dark:hover:bg-green-700
+                "
               >
                 {isSubmitting ? <Spinner /> : localize('com_auth_continue')}
               </button>
diff --git a/client/src/components/SidePanel/Agents/AgentFooter.tsx b/client/src/components/SidePanel/Agents/AgentFooter.tsx
index 062f81d253..75f10a3851 100644
--- a/client/src/components/SidePanel/Agents/AgentFooter.tsx
+++ b/client/src/components/SidePanel/Agents/AgentFooter.tsx
@@ -50,10 +50,12 @@ export default function AgentFooter({
     return localize('com_ui_create');
   };
 
+  const showButtons = activePanel === Panel.builder;
+
   return (
     <div className="mx-1 mb-1 flex w-full flex-col gap-2">
-      {activePanel !== Panel.advanced && <AdvancedButton setActivePanel={setActivePanel} />}
-      {user?.role === SystemRoles.ADMIN && <AdminSettings />}
+      {showButtons && <AdvancedButton setActivePanel={setActivePanel} />}
+      {user?.role === SystemRoles.ADMIN && showButtons && <AdminSettings />}
       {/* Context Button */}
       <div className="flex items-center justify-end gap-2">
         <DeleteButton
@@ -63,13 +65,13 @@ export default function AgentFooter({
         />
         {(agent?.author === user?.id || user?.role === SystemRoles.ADMIN) &&
           hasAccessToShareAgents && (
-          <ShareAgent
-            agent_id={agent_id}
-            agentName={agent?.name ?? ''}
-            projectIds={agent?.projectIds ?? []}
-            isCollaborative={agent?.isCollaborative}
-          />
-        )}
+            <ShareAgent
+              agent_id={agent_id}
+              agentName={agent?.name ?? ''}
+              projectIds={agent?.projectIds ?? []}
+              isCollaborative={agent?.isCollaborative}
+            />
+          )}
         {agent && agent.author === user?.id && <DuplicateAgent agent_id={agent_id} />}
         {/* Submit Button */}
         <button
diff --git a/client/src/main.jsx b/client/src/main.jsx
index 4c7bde0270..53b483f8d2 100644
--- a/client/src/main.jsx
+++ b/client/src/main.jsx
@@ -6,6 +6,7 @@ import './style.css';
 import './mobile.css';
 import { ApiErrorBoundaryProvider } from './hooks/ApiErrorBoundaryContext';
 import 'katex/dist/katex.min.css';
+import 'katex/dist/contrib/copy-tex.js';
 
 const container = document.getElementById('root');
 const root = createRoot(container);
diff --git a/librechat.example.yaml b/librechat.example.yaml
index 0b4963cb2a..ae14b0faae 100644
--- a/librechat.example.yaml
+++ b/librechat.example.yaml
@@ -71,6 +71,13 @@ interface:
   multiConvo: true
   agents: true
 
+# Example Cloudflare turnstile (optional)
+#turnstile:
+#  siteKey: "your-site-key-here"
+#  options:
+#    language: "auto"    # "auto" or an ISO 639-1 language code (e.g. en)
+#    size: "normal"      # Options: "normal", "compact", "flexible", or "invisible"
+
 # Example Registration Object Structure (optional)
 registration:
   socialLogins: ['github', 'google', 'discord', 'openid', 'facebook', 'apple']
diff --git a/package-lock.json b/package-lock.json
index 5aa383170a..f4690d43c0 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1073,6 +1073,7 @@
         "@dicebear/collection": "^9.2.2",
         "@dicebear/core": "^9.2.2",
         "@headlessui/react": "^2.1.2",
+        "@marsidev/react-turnstile": "^1.1.0",
         "@radix-ui/react-accordion": "^1.1.2",
         "@radix-ui/react-alert-dialog": "^1.0.2",
         "@radix-ui/react-checkbox": "^1.0.3",
@@ -19729,6 +19730,16 @@
       "resolved": "client",
       "link": true
     },
+    "node_modules/@marsidev/react-turnstile": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/@marsidev/react-turnstile/-/react-turnstile-1.1.0.tgz",
+      "integrity": "sha512-X7bP9ZYutDd+E+klPYF+/BJHqEyyVkN4KKmZcNRr84zs3DcMoftlMAuoKqNSnqg0HE7NQ1844+TLFSJoztCdSA==",
+      "license": "MIT",
+      "peerDependencies": {
+        "react": "^17.0.2 || ^18.0.0 || ^19.0",
+        "react-dom": "^17.0.2 || ^18.0.0 || ^19.0"
+      }
+    },
     "node_modules/@microsoft/eslint-formatter-sarif": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/@microsoft/eslint-formatter-sarif/-/eslint-formatter-sarif-3.1.0.tgz",
diff --git a/packages/data-provider/src/config.ts b/packages/data-provider/src/config.ts
index 978aea2520..bdac70a0c6 100644
--- a/packages/data-provider/src/config.ts
+++ b/packages/data-provider/src/config.ts
@@ -505,10 +505,28 @@ export const intefaceSchema = z
 export type TInterfaceConfig = z.infer<typeof intefaceSchema>;
 export type TBalanceConfig = z.infer<typeof balanceSchema>;
 
+export const turnstileOptionsSchema = z
+  .object({
+    language: z.string().default('auto'),
+    size: z.enum(['normal', 'compact', 'flexible', 'invisible']).default('normal'),
+  })
+  .default({
+    language: 'auto',
+    size: 'normal',
+  });
+
+export const turnstileSchema = z.object({
+  siteKey: z.string(),
+  options: turnstileOptionsSchema.optional(),
+});
+
+export type TTurnstileConfig = z.infer<typeof turnstileSchema>;
+
 export type TStartupConfig = {
   appTitle: string;
   socialLogins?: string[];
   interface?: TInterfaceConfig;
+  turnstile?: TTurnstileConfig;
   balance?: TBalanceConfig;
   discordLoginEnabled: boolean;
   facebookLoginEnabled: boolean;
@@ -578,6 +596,7 @@ export const configSchema = z.object({
   filteredTools: z.array(z.string()).optional(),
   mcpServers: MCPServersSchema.optional(),
   interface: intefaceSchema,
+  turnstile: turnstileSchema.optional(),
   fileStrategy: fileSourceSchema.default(FileSources.local),
   actions: z
     .object({