diff --git a/api/server/routes/__tests__/config.spec.js b/api/server/routes/__tests__/config.spec.js
index e0fc200486..af82399e76 100644
--- a/api/server/routes/__tests__/config.spec.js
+++ b/api/server/routes/__tests__/config.spec.js
@@ -185,18 +185,22 @@ describe('GET /api/config', () => {
       expect(response.body).not.toHaveProperty('customFooter');
     });
 
-    it('should include public share footer fields when share context is requested', async () => {
+    it('should not include share-only fields when share context is requested', async () => {
       process.env.ANALYTICS_GTM_ID = 'GTM-XYZ';
       process.env.CUSTOM_FOOTER = 'public footer text';
       process.env.HELP_AND_FAQ_URL = 'https://internal.example.com/faq';
+      process.env.SANDPACK_BUNDLER_URL = 'https://bundler.test';
+      process.env.SANDPACK_STATIC_BUNDLER_URL = 'https://static-bundler.test';
       mockGetAppConfig.mockResolvedValue(baseAppConfig);
       const app = createApp(null);
 
       const response = await request(app).get('/api/config?context=share');
 
       expect(response.statusCode).toBe(200);
-      expect(response.body.analyticsGtmId).toBe('GTM-XYZ');
-      expect(response.body.customFooter).toBe('public footer text');
+      expect(response.body).not.toHaveProperty('analyticsGtmId');
+      expect(response.body).not.toHaveProperty('customFooter');
+      expect(response.body).not.toHaveProperty('bundlerURL');
+      expect(response.body).not.toHaveProperty('staticBundlerURL');
       expect(response.body).not.toHaveProperty('helpAndFaqURL');
       expect(response.body).not.toHaveProperty('allowAccountDeletion');
     });
diff --git a/api/server/routes/__tests__/share.spec.js b/api/server/routes/__tests__/share.spec.js
index ecbd820ae6..c9d6cb0037 100644
--- a/api/server/routes/__tests__/share.spec.js
+++ b/api/server/routes/__tests__/share.spec.js
@@ -6,6 +6,10 @@ const mockGetSharedLinkExpiration = jest.fn();
 const mockGrantCreationPermissions = jest.fn();
 const mockUpdateSharedLinkPermissionsExpiration = jest.fn();
 const mockSharedLinksAccess = jest.fn((_req, _res, next) => next());
+const mockBuildSharedLinkStartupPayload = jest.fn();
+const mockCanAccessSharedLink = jest.fn((_req, _res, next) => next());
+const mockGetAppConfig = jest.fn();
+const mockGetTenantId = jest.fn(() => undefined);
 
 jest.mock('@librechat/api', () => ({
   isEnabled: jest.fn(() => true),
@@ -16,6 +20,7 @@ jest.mock('@librechat/api', () => ({
   ensureLinkPermissions: jest.fn(),
   isFileSnapshotEnabled: jest.fn(() => true),
   isFileSnapshotKillSwitchActive: jest.fn(() => false),
+  buildSharedLinkStartupPayload: (...args) => mockBuildSharedLinkStartupPayload(...args),
   deleteSharedLinkWithCleanup: jest.fn(),
   getSharedLinkExpiration: (...args) => mockGetSharedLinkExpiration(...args),
   isActiveExpirationDate: jest.fn((expiredAt) => expiredAt > new Date()),
@@ -23,9 +28,11 @@ jest.mock('@librechat/api', () => ({
 
 jest.mock('@librechat/data-schemas', () => ({
   logger: { error: jest.fn(), warn: jest.fn() },
+  getTenantId: (...args) => mockGetTenantId(...args),
   createTempChatExpirationDate: jest.fn(() => new Date('2030-01-01T00:00:00.000Z')),
   runAsSystem: jest.fn((fn) => fn()),
   tenantStorage: { run: jest.fn((_ctx, fn) => fn()) },
+  SYSTEM_TENANT_ID: '__SYSTEM__',
 }));
 
 jest.mock('librechat-data-provider', () => ({
@@ -84,11 +91,19 @@ jest.mock('~/server/utils/files', () => ({
   getContentDisposition: jest.fn((name, disposition = 'attachment') => `${disposition}; ${name}`),
 }));
 
-jest.mock('~/server/middleware/canAccessSharedLink', () => (_req, _res, next) => next());
+jest.mock(
+  '~/server/middleware/canAccessSharedLink',
+  () =>
+    (...args) =>
+      mockCanAccessSharedLink(...args),
+);
 jest.mock('~/server/middleware/optionalShareFileAuth', () => (_req, _res, next) => next());
 jest.mock('~/server/middleware/optionalJwtAuth', () => (req, _res, next) => next());
 jest.mock('~/server/middleware/requireJwtAuth', () => (req, res, next) => next());
 jest.mock('~/server/middleware/config/app', () => (_req, _res, next) => next());
+jest.mock('~/server/services/Config/app', () => ({
+  getAppConfig: (...args) => mockGetAppConfig(...args),
+}));
 
 const { Readable } = require('stream');
 const { RetentionMode } = require('librechat-data-provider');
@@ -129,9 +144,22 @@ const buildApp = ({ retentionMode = RetentionMode.TEMPORARY } = {}) => {
   return app;
 };
 
-describe('share routes retention', () => {
+describe('share routes', () => {
   beforeEach(() => {
     jest.clearAllMocks();
+    mockGetTenantId.mockReturnValue(undefined);
+    mockGetAppConfig.mockResolvedValue({
+      interfaceConfig: {
+        privacyPolicy: { externalUrl: 'https://example.com/privacy' },
+      },
+    });
+    mockBuildSharedLinkStartupPayload.mockReturnValue({
+      appTitle: 'Shared Chat',
+      bundlerURL: 'https://bundler.example.com',
+      interface: {
+        privacyPolicy: { externalUrl: 'https://example.com/privacy' },
+      },
+    });
     getRoleByName.mockResolvedValue({
       permissions: {
         SHARED_LINKS: {
@@ -142,6 +170,45 @@ describe('share routes retention', () => {
     mockGrantCreationPermissions.mockResolvedValue(undefined);
   });
 
+  it('serves shared startup config after shared-link access is granted', async () => {
+    const response = await request(buildApp()).get('/api/share/share-123/config');
+
+    expect(response.status).toBe(200);
+    expect(response.headers['cache-control']).toBe('private, no-store');
+    expect(mockCanAccessSharedLink).toHaveBeenCalled();
+    expect(mockGetAppConfig).toHaveBeenCalledWith({ baseOnly: true });
+    expect(mockBuildSharedLinkStartupPayload).toHaveBeenCalledWith({
+      interfaceConfig: {
+        privacyPolicy: { externalUrl: 'https://example.com/privacy' },
+      },
+    });
+    expect(response.body).toEqual({
+      appTitle: 'Shared Chat',
+      bundlerURL: 'https://bundler.example.com',
+      interface: {
+        privacyPolicy: { externalUrl: 'https://example.com/privacy' },
+      },
+    });
+  });
+
+  it('uses tenant-scoped app config for shared startup config when tenant context is present', async () => {
+    mockGetTenantId.mockReturnValue('tenant-abc');
+
+    const response = await request(buildApp()).get('/api/share/share-123/config');
+
+    expect(response.status).toBe(200);
+    expect(mockGetAppConfig).toHaveBeenCalledWith({ tenantId: 'tenant-abc' });
+  });
+
+  it('uses base app config for shared startup config in system context', async () => {
+    mockGetTenantId.mockReturnValue('__SYSTEM__');
+
+    const response = await request(buildApp()).get('/api/share/share-123/config');
+
+    expect(response.status).toBe(200);
+    expect(mockGetAppConfig).toHaveBeenCalledWith({ baseOnly: true });
+  });
+
   it('prevents successful shared message responses from being cached', async () => {
     getSharedMessages.mockResolvedValue({ shareId: 'share-123', messages: [] });
 
diff --git a/api/server/routes/config.js b/api/server/routes/config.js
index 19f25b844f..f6eb66374e 100644
--- a/api/server/routes/config.js
+++ b/api/server/routes/config.js
@@ -107,9 +107,9 @@ function buildPreLoginPayload() {
 }
 
 /**
- * Public share fields rendered by `client/src/components/Share/ShareView.tsx`.
- * They remain off the default anonymous config used by login screens, and are
- * exposed to anonymous callers only when the client asks for share context.
+ * Fields shared by authenticated chat and share-view config. Anonymous share
+ * views receive these through `/api/share/:shareId/config` after share access
+ * checks, not through the generic startup config endpoint.
  */
 function buildPublicSharePayload() {
   /** @type {Partial<TStartupConfig>} */
@@ -215,7 +215,6 @@ router.get('/', async function (req, res) {
       /** @type {Partial<TStartupConfig>} */
       const payload = {
         ...preLoginPayload,
-        ...(req.query.context === 'share' ? publicSharePayload : {}),
         socialLogins: baseConfig?.registration?.socialLogins ?? defaultSocialLogins,
         turnstile: baseConfig?.turnstileConfig,
         ...(rum ? { rum } : {}),
diff --git a/api/server/routes/share.js b/api/server/routes/share.js
index 09f84be357..1a15bd2f73 100644
--- a/api/server/routes/share.js
+++ b/api/server/routes/share.js
@@ -7,6 +7,7 @@ const {
   ensureLinkPermissions,
   isFileSnapshotEnabled,
   isFileSnapshotKillSwitchActive,
+  buildSharedLinkStartupPayload,
   deleteSharedLinkWithCleanup,
   updateSharedLinkPermissionsExpiration,
   isActiveExpirationDate,
@@ -14,8 +15,10 @@ const {
 } = require('@librechat/api');
 const {
   logger,
+  getTenantId,
   runAsSystem,
   tenantStorage,
+  SYSTEM_TENANT_ID,
   createTempChatExpirationDate,
 } = require('@librechat/data-schemas');
 const { FileSources, PermissionTypes, Permissions } = require('librechat-data-provider');
@@ -38,6 +41,7 @@ const optionalShareFileAuth = require('~/server/middleware/optionalShareFileAuth
 const optionalJwtAuth = require('~/server/middleware/optionalJwtAuth');
 const requireJwtAuth = require('~/server/middleware/requireJwtAuth');
 const configMiddleware = require('~/server/middleware/config/app');
+const { getAppConfig } = require('~/server/services/Config/app');
 const router = express.Router();
 
 const checkSharedLinksAccess = generateCheckAccess({
@@ -76,6 +80,14 @@ const runWithTenant = (tenantId, fn) =>
  * 'failed' on the next poll so the client poller terminates. */
 const PREVIEW_LAZY_SWEEP_CUTOFF_MS = 2 * 60 * 1000;
 
+const getShareStartupPayload = async () => {
+  const tenantId = getTenantId();
+  const appConfig = await getAppConfig(
+    tenantId && tenantId !== SYSTEM_TENANT_ID ? { tenantId } : { baseOnly: true },
+  );
+  return buildSharedLinkStartupPayload(appConfig);
+};
+
 /**
  * MIME types that are safe to render inline. Everything else (text/html, SVG,
  * and other active content) is served as an `attachment` so a public viewer
@@ -212,6 +224,17 @@ const streamSharedFile = async (req, res, file, requestedDisposition) => {
 };
 
 if (allowSharedLinks) {
+  router.get('/:shareId/config', optionalJwtAuth, canAccessSharedLink, async (_req, res) => {
+    try {
+      const payload = await getShareStartupPayload();
+      res.set('Cache-Control', 'private, no-store');
+      res.status(200).json(payload);
+    } catch (error) {
+      logger.error('Error getting shared startup config:', error);
+      res.status(500).json({ message: 'Error getting shared startup config' });
+    }
+  });
+
   router.get(
     '/:shareId',
     optionalJwtAuth,
diff --git a/client/src/components/Artifacts/ArtifactPreview.tsx b/client/src/components/Artifacts/ArtifactPreview.tsx
index 8257f76887..c49c22772e 100644
--- a/client/src/components/Artifacts/ArtifactPreview.tsx
+++ b/client/src/components/Artifacts/ArtifactPreview.tsx
@@ -4,7 +4,7 @@ import type {
   SandpackProviderProps,
   SandpackPreviewRef,
 } from '@codesandbox/sandpack-react/unstyled';
-import type { TStartupConfig } from 'librechat-data-provider';
+import type { SandpackStartupConfig } from '~/utils/artifacts';
 import type { ArtifactFiles } from '~/common';
 import { sharedFiles, buildSandpackOptions } from '~/utils/artifacts';
 
@@ -23,7 +23,7 @@ export const ArtifactPreview = memo(function ({
   sharedProps: Partial<SandpackProviderProps>;
   previewRef: MutableRefObject<SandpackPreviewRef>;
   currentCode?: string;
-  startupConfig?: TStartupConfig;
+  startupConfig?: SandpackStartupConfig;
 }) {
   const artifactFiles = useMemo(() => {
     if (Object.keys(files).length === 0) {
diff --git a/client/src/components/Artifacts/ArtifactTabs.tsx b/client/src/components/Artifacts/ArtifactTabs.tsx
index 32332215f0..3ebc98a366 100644
--- a/client/src/components/Artifacts/ArtifactTabs.tsx
+++ b/client/src/components/Artifacts/ArtifactTabs.tsx
@@ -3,11 +3,12 @@ import * as Tabs from '@radix-ui/react-tabs';
 import type { SandpackPreviewRef } from '@codesandbox/sandpack-react/unstyled';
 import type { editor } from 'monaco-editor';
 import type { Artifact } from '~/common';
-import { useCodeState } from '~/Providers/EditorContext';
+import { useGetSharedStartupConfig, useGetStartupConfig } from '~/data-provider';
 import useArtifactProps from '~/hooks/Artifacts/useArtifactProps';
 import { ArtifactCodeEditor } from './ArtifactCodeEditor';
-import { useGetStartupConfig } from '~/data-provider';
+import { useCodeState } from '~/Providers/EditorContext';
 import { ArtifactPreview } from './ArtifactPreview';
+import { useShareContext } from '~/Providers';
 
 export default function ArtifactTabs({
   artifact,
@@ -19,7 +20,14 @@ export default function ArtifactTabs({
   isSharedConvo?: boolean;
 }) {
   const { currentCode, setCurrentCode } = useCodeState();
-  const { data: startupConfig } = useGetStartupConfig();
+  const { shareId } = useShareContext();
+  const shouldUseSharedConfig =
+    isSharedConvo === true && typeof shareId === 'string' && shareId.length > 0;
+  const { data: startupConfig } = useGetStartupConfig({ enabled: !shouldUseSharedConfig });
+  const { data: sharedStartupConfig } = useGetSharedStartupConfig(shareId, {
+    enabled: shouldUseSharedConfig,
+  });
+  const resolvedStartupConfig = shouldUseSharedConfig ? sharedStartupConfig : startupConfig;
   const monacoRef = useRef<editor.IStandaloneCodeEditor | null>(null);
   const lastIdRef = useRef<string | null>(null);
 
@@ -55,7 +63,7 @@ export default function ArtifactTabs({
           previewRef={previewRef}
           sharedProps={sharedProps}
           currentCode={currentCode}
-          startupConfig={startupConfig}
+          startupConfig={resolvedStartupConfig}
         />
       </Tabs.Content>
     </div>
diff --git a/client/src/components/Chat/Footer.tsx b/client/src/components/Chat/Footer.tsx
index b841a98819..90d78737b9 100644
--- a/client/src/components/Chat/Footer.tsx
+++ b/client/src/components/Chat/Footer.tsx
@@ -8,7 +8,11 @@ import { useLocalize } from '~/hooks';
 
 type FooterProps = {
   className?: string;
-  startupConfig?: TStartupConfig | null;
+  startupConfig?: FooterStartupConfig | null;
+};
+
+type FooterStartupConfig = Pick<Partial<TStartupConfig>, 'analyticsGtmId' | 'customFooter'> & {
+  interface?: Pick<NonNullable<TStartupConfig['interface']>, 'privacyPolicy' | 'termsOfService'>;
 };
 
 function Footer({ className, startupConfig }: FooterProps) {
diff --git a/client/src/components/Share/ShareView.tsx b/client/src/components/Share/ShareView.tsx
index 68c7a9cd75..20a354742a 100644
--- a/client/src/components/Share/ShareView.tsx
+++ b/client/src/components/Share/ShareView.tsx
@@ -18,9 +18,9 @@ import {
 } from '@librechat/client';
 import { ThemeSelector, LangSelector } from '~/components/Nav/SettingsTabs/General/Selectors';
 import { ShareMessagesProvider } from './ShareMessagesProvider';
+import { useGetSharedStartupConfig } from '~/data-provider';
 import { ShareArtifactsContainer } from './ShareArtifacts';
 import { useLocalize, useDocumentTitle } from '~/hooks';
-import { useGetStartupConfig } from '~/data-provider';
 import { ShareContext } from '~/Providers';
 import MessagesView from './MessagesView';
 import Footer from '../Chat/Footer';
@@ -29,9 +29,9 @@ import store from '~/store';
 
 function SharedView() {
   const localize = useLocalize();
-  const { data: config } = useGetStartupConfig(undefined, { context: 'share' });
   const { theme, setTheme } = useContext(ThemeContext);
   const { shareId } = useParams();
+  const { data: config } = useGetSharedStartupConfig(shareId);
   const { data, isLoading } = useGetSharedMessages(shareId ?? '');
   const dataTree = data && buildTree({ messages: data.messages });
   const messagesTree = dataTree?.length === 0 ? null : (dataTree ?? null);
diff --git a/client/src/data-provider/Endpoints/queries.ts b/client/src/data-provider/Endpoints/queries.ts
index 1ea8b3c0aa..389a9c44cf 100644
--- a/client/src/data-provider/Endpoints/queries.ts
+++ b/client/src/data-provider/Endpoints/queries.ts
@@ -88,6 +88,9 @@ export const useContextProjectionQuery = (
 export const startupConfigKey = (isAuthenticated: boolean, context?: t.StartupConfigContext) =>
   [QueryKeys.startupConfig, isAuthenticated, context ?? 'default'] as const;
 
+export const sharedStartupConfigKey = (shareId?: string) =>
+  [QueryKeys.sharedStartupConfig, shareId ?? ''] as const;
+
 export const useGetStartupConfig = (
   config?: UseQueryOptions<t.TStartupConfig>,
   options?: { context?: t.StartupConfigContext },
@@ -107,3 +110,26 @@ export const useGetStartupConfig = (
     },
   );
 };
+
+export const useGetSharedStartupConfig = (
+  shareId?: string,
+  config?: UseQueryOptions<t.TSharedLinkStartupConfig>,
+): QueryObserverResult<t.TSharedLinkStartupConfig> => {
+  const queriesEnabled = useRecoilValue<boolean>(store.queriesEnabled);
+  return useQuery<t.TSharedLinkStartupConfig>(
+    sharedStartupConfigKey(shareId),
+    () => dataService.getSharedStartupConfig(shareId ?? ''),
+    {
+      staleTime: Infinity,
+      refetchOnWindowFocus: false,
+      refetchOnReconnect: false,
+      refetchOnMount: false,
+      ...config,
+      enabled:
+        (config?.enabled ?? true) === true &&
+        queriesEnabled &&
+        typeof shareId === 'string' &&
+        shareId.length > 0,
+    },
+  );
+};
diff --git a/client/src/utils/artifacts.ts b/client/src/utils/artifacts.ts
index 264c8f9e30..b5ff9552e7 100644
--- a/client/src/utils/artifacts.ts
+++ b/client/src/utils/artifacts.ts
@@ -178,9 +178,14 @@ export const sharedOptions: SandpackProviderProps['options'] = {
   externalResources: [TAILWIND_CDN],
 };
 
+export type SandpackStartupConfig = Pick<
+  Partial<TStartupConfig>,
+  'bundlerURL' | 'staticBundlerURL'
+>;
+
 export function buildSandpackOptions(
   template: SandpackProviderProps['template'],
-  startupConfig?: TStartupConfig,
+  startupConfig?: SandpackStartupConfig,
 ): SandpackProviderProps['options'] {
   if (!startupConfig) {
     return sharedOptions;
diff --git a/packages/api/src/shared-links/access.test.ts b/packages/api/src/shared-links/access.test.ts
index 795ef6c7f1..3f8ea77146 100644
--- a/packages/api/src/shared-links/access.test.ts
+++ b/packages/api/src/shared-links/access.test.ts
@@ -124,6 +124,20 @@ describe('canAccessSharedLink', () => {
       expect(res._status).toBe(404);
       expect(next).not.toHaveBeenCalled();
     });
+
+    test('returns 404 when share is expired but ACL still exists', async () => {
+      const link = await createTestLink({ expiredAt: new Date('2020-01-01T00:00:00.000Z') });
+      await grantPublicViewer(link._id);
+      process.env.ALLOW_SHARED_LINKS_PUBLIC = 'true';
+
+      const req = createReq({ params: { shareId: link.shareId } });
+      const res = createRes();
+      const next = jest.fn();
+      await canAccessSharedLink(req, res, next as unknown as NextFunction);
+
+      expect(res._status).toBe(404);
+      expect(next).not.toHaveBeenCalled();
+    });
   });
 
   describe('public links', () => {
diff --git a/packages/api/src/shared-links/access.ts b/packages/api/src/shared-links/access.ts
index d83c5fd24d..3cbb971c3a 100644
--- a/packages/api/src/shared-links/access.ts
+++ b/packages/api/src/shared-links/access.ts
@@ -1,5 +1,10 @@
 import { ResourceType, PermissionBits } from 'librechat-data-provider';
-import { getTenantId, runAsSystem, tenantStorage } from '@librechat/data-schemas';
+import {
+  getTenantId,
+  runAsSystem,
+  tenantStorage,
+  activeExpirationFilter,
+} from '@librechat/data-schemas';
 import type { Request, Response, NextFunction } from 'express';
 import type { IUser } from '@librechat/data-schemas';
 import type { Types, Model } from 'mongoose';
@@ -53,7 +58,10 @@ export function createSharedLinkAccessMiddleware(deps: SharedLinkAccessDeps) {
 
     const SharedLink = mg.models.SharedLink as Model<RawSharedLink>;
     const findShare = async () =>
-      (await SharedLink.findOne({ shareId }).lean()) as RawSharedLink | null;
+      (await SharedLink.findOne({
+        shareId,
+        ...activeExpirationFilter<RawSharedLink>(),
+      }).lean()) as RawSharedLink | null;
     const rawShare = getTenantId() ? await findShare() : await runAsSystem(findShare);
 
     if (!rawShare) {
diff --git a/packages/api/src/shared-links/config.test.ts b/packages/api/src/shared-links/config.test.ts
index 12d4c3d23f..5df601d541 100644
--- a/packages/api/src/shared-links/config.test.ts
+++ b/packages/api/src/shared-links/config.test.ts
@@ -1,5 +1,5 @@
 import type { AppConfig } from '@librechat/data-schemas';
-import { isFileSnapshotEnabled } from './config';
+import { buildSharedLinkStartupPayload, isFileSnapshotEnabled } from './config';
 
 const withSharedLinks = (sharedLinks: unknown): AppConfig =>
   ({ interfaceConfig: { sharedLinks } }) as unknown as AppConfig;
@@ -41,3 +41,45 @@ describe('isFileSnapshotEnabled', () => {
     expect(isFileSnapshotEnabled(withSharedLinks({ snapshotFiles: false }))).toBe(true);
   });
 });
+
+describe('buildSharedLinkStartupPayload', () => {
+  it('builds the share-view startup allowlist', () => {
+    const payload = buildSharedLinkStartupPayload(
+      {
+        interfaceConfig: {
+          privacyPolicy: { externalUrl: 'https://example.com/privacy' },
+          termsOfService: { externalUrl: 'https://example.com/tos' },
+          modelSelect: true,
+        },
+      } as AppConfig,
+      {
+        ANALYTICS_GTM_ID: 'GTM-XYZ',
+        APP_TITLE: 'Test Chat',
+        CUSTOM_FOOTER: 'Shared footer',
+        SANDPACK_BUNDLER_URL: 'https://bundler.example.com',
+        SANDPACK_STATIC_BUNDLER_URL: 'https://static-bundler.example.com',
+      },
+    );
+
+    expect(payload).toEqual({
+      appTitle: 'Test Chat',
+      analyticsGtmId: 'GTM-XYZ',
+      bundlerURL: 'https://bundler.example.com',
+      staticBundlerURL: 'https://static-bundler.example.com',
+      customFooter: 'Shared footer',
+      interface: {
+        privacyPolicy: { externalUrl: 'https://example.com/privacy' },
+        termsOfService: { externalUrl: 'https://example.com/tos' },
+      },
+    });
+  });
+
+  it('defaults the app title and omits unrelated interface config', () => {
+    const payload = buildSharedLinkStartupPayload(
+      { interfaceConfig: { modelSelect: true } } as AppConfig,
+      {},
+    );
+
+    expect(payload).toEqual({ appTitle: 'LibreChat' });
+  });
+});
diff --git a/packages/api/src/shared-links/config.ts b/packages/api/src/shared-links/config.ts
index cd9766b763..1d19c7d22c 100644
--- a/packages/api/src/shared-links/config.ts
+++ b/packages/api/src/shared-links/config.ts
@@ -1,6 +1,9 @@
+import type { TSharedLinkStartupConfig } from 'librechat-data-provider';
 import type { AppConfig } from '@librechat/data-schemas';
 import { isEnabled } from '~/utils';
 
+type SharedLinkStartupEnv = NodeJS.ProcessEnv;
+
 /**
  * Whether shared links should snapshot the files referenced by the shared chat
  * snapshot. The `SHARED_LINKS_SNAPSHOT_FILES` env var overrides the yaml
@@ -31,3 +34,35 @@ export function isFileSnapshotKillSwitchActive(): boolean {
   const envValue = process.env.SHARED_LINKS_SNAPSHOT_FILES;
   return envValue !== undefined && !isEnabled(envValue);
 }
+
+export function buildSharedLinkStartupPayload(
+  appConfig?: AppConfig | null,
+  env: SharedLinkStartupEnv = process.env,
+): TSharedLinkStartupConfig {
+  const payload: TSharedLinkStartupConfig = {
+    appTitle: env.APP_TITLE || 'LibreChat',
+  };
+
+  if (typeof env.ANALYTICS_GTM_ID === 'string') {
+    payload.analyticsGtmId = env.ANALYTICS_GTM_ID;
+  }
+  if (typeof env.SANDPACK_BUNDLER_URL === 'string') {
+    payload.bundlerURL = env.SANDPACK_BUNDLER_URL;
+  }
+  if (typeof env.SANDPACK_STATIC_BUNDLER_URL === 'string') {
+    payload.staticBundlerURL = env.SANDPACK_STATIC_BUNDLER_URL;
+  }
+  if (typeof env.CUSTOM_FOOTER === 'string') {
+    payload.customFooter = env.CUSTOM_FOOTER;
+  }
+
+  const { privacyPolicy, termsOfService } = appConfig?.interfaceConfig ?? {};
+  if (privacyPolicy || termsOfService) {
+    payload.interface = {
+      ...(privacyPolicy ? { privacyPolicy } : {}),
+      ...(termsOfService ? { termsOfService } : {}),
+    };
+  }
+
+  return payload;
+}
diff --git a/packages/data-provider/src/api-endpoints.ts b/packages/data-provider/src/api-endpoints.ts
index bf3d3031bd..326e60f644 100644
--- a/packages/data-provider/src/api-endpoints.ts
+++ b/packages/data-provider/src/api-endpoints.ts
@@ -71,6 +71,7 @@ export const messagesBranch = () => `${messagesRoot}/branch`;
 
 const shareRoot = `${BASE_URL}/api/share`;
 export const shareMessages = (shareId: string) => `${shareRoot}/${shareId}`;
+export const sharedStartupConfig = (shareId: string) => `${shareMessages(shareId)}/config`;
 export const getSharedLink = (conversationId: string) => `${shareRoot}/link/${conversationId}`;
 export const getSharedLinks = (
   pageSize: number,
diff --git a/packages/data-provider/src/config.ts b/packages/data-provider/src/config.ts
index eafcc2f97f..2e0439cc0e 100644
--- a/packages/data-provider/src/config.ts
+++ b/packages/data-provider/src/config.ts
@@ -1447,6 +1447,19 @@ export type TStartupConfig = {
   };
 };
 
+export type TSharedLinkStartupInterface = Pick<
+  Partial<TInterfaceConfig>,
+  'privacyPolicy' | 'termsOfService'
+>;
+
+export type TSharedLinkStartupConfig = Pick<TStartupConfig, 'appTitle'> &
+  Pick<
+    Partial<TStartupConfig>,
+    'analyticsGtmId' | 'bundlerURL' | 'customFooter' | 'staticBundlerURL'
+  > & {
+    interface?: TSharedLinkStartupInterface;
+  };
+
 export enum OCRStrategy {
   MISTRAL_OCR = 'mistral_ocr',
   CUSTOM_OCR = 'custom_ocr',
diff --git a/packages/data-provider/src/data-service.ts b/packages/data-provider/src/data-service.ts
index 1ffac23dd4..80e5555170 100644
--- a/packages/data-provider/src/data-service.ts
+++ b/packages/data-provider/src/data-service.ts
@@ -64,6 +64,10 @@ export function getSharedMessages(shareId: string): Promise<t.TSharedMessagesRes
   return request.get(endpoints.shareMessages(shareId));
 }
 
+export function getSharedStartupConfig(shareId: string): Promise<config.TSharedLinkStartupConfig> {
+  return request.get(endpoints.sharedStartupConfig(shareId));
+}
+
 export const listSharedLinks = async (
   params: q.SharedLinksListParams,
 ): Promise<q.SharedLinksResponse> => {
diff --git a/packages/data-provider/src/keys.ts b/packages/data-provider/src/keys.ts
index 54c7b61c25..dde54005a6 100644
--- a/packages/data-provider/src/keys.ts
+++ b/packages/data-provider/src/keys.ts
@@ -1,6 +1,7 @@
 export enum QueryKeys {
   messages = 'messages',
   sharedMessages = 'sharedMessages',
+  sharedStartupConfig = 'sharedStartupConfig',
   sharedLinks = 'sharedLinks',
   allConversations = 'allConversations',
   archivedConversations = 'archivedConversations',