✨ feat: Configurable MCP Dropdown Placeholder (#7988)

* new env  variable for mcp label

* 🔄 refactor: Update MCPSelect placeholderText to draw from interface section of librechat.yaml rather than .env

* 🧹 chore: extract mcpServers schema for better maintainability

* 🔄 refactor: Update MCPSelect and useMCPSelect to utilize TPlugin type for better type consistency

* 🔄 refactor: Pass placeholder from startupConfig to MCPSubMenu for improved localization

* 🔄 refactor: Integrate startupConfig into BadgeRowContext and related components for enhanced configuration management

---------

Co-authored-by: mwbrandao <mariana.brandao@nos.pt>
Co-authored-by: Danny Avila <danny@librechat.ai>

client/src/Providers/BadgeRowContext.tsx

@@ -1,6 +1,7 @@
 import React, { createContext, useContext } from 'react';
 import { Tools, LocalStorageKeys } from 'librechat-data-provider';
 import { useMCPSelect, useToolToggle, useCodeApiKeyForm, useSearchApiKeyForm } from '~/hooks';
+import { useGetStartupConfig } from '~/data-provider';
 
 interface BadgeRowContextType {
   conversationId?: string | null;
@@ -10,6 +11,7 @@ interface BadgeRowContextType {
   fileSearch: ReturnType<typeof useToolToggle>;
   codeApiKeyForm: ReturnType<typeof useCodeApiKeyForm>;
   searchApiKeyForm: ReturnType<typeof useSearchApiKeyForm>;
+  startupConfig: ReturnType<typeof useGetStartupConfig>['data'];
 }
 
 const BadgeRowContext = createContext<BadgeRowContextType | undefined>(undefined);
@@ -28,6 +30,9 @@ interface BadgeRowProviderProps {
 }
 
 export default function BadgeRowProvider({ children, conversationId }: BadgeRowProviderProps) {
+  /** Startup config */
+  const { data: startupConfig } = useGetStartupConfig();
+
   /** MCPSelect hook */
   const mcpSelect = useMCPSelect({ conversationId });
 
@@ -73,6 +78,7 @@ export default function BadgeRowProvider({ children, conversationId }: BadgeRowP
     mcpSelect,
     webSearch,
     fileSearch,
+    startupConfig,
     conversationId,
     codeApiKeyForm,
     codeInterpreter,

client/src/components/Chat/Input/MCPSelect.tsx

@@ -2,8 +2,7 @@ import React, { memo, useCallback, useState } from 'react';
 import { SettingsIcon } from 'lucide-react';
 import { Constants } from 'librechat-data-provider';
 import { useUpdateUserPluginsMutation } from 'librechat-data-provider/react-query';
-import type { TUpdateUserPlugins } from 'librechat-data-provider';
-import type { McpServerInfo } from '~/hooks/Plugins/useMCPSelect';
+import type { TUpdateUserPlugins, TPlugin } from 'librechat-data-provider';
 import MCPConfigDialog, { type ConfigFieldDetail } from '~/components/ui/MCPConfigDialog';
 import { useToastContext, useBadgeRowContext } from '~/Providers';
 import MultiSelect from '~/components/ui/MultiSelect';
@@ -18,11 +17,11 @@ const getBaseMCPPluginKey = (fullPluginKey: string): string => {
 function MCPSelect() {
   const localize = useLocalize();
   const { showToast } = useToastContext();
-  const { mcpSelect } = useBadgeRowContext();
+  const { mcpSelect, startupConfig } = useBadgeRowContext();
   const { mcpValues, setMCPValues, mcpServerNames, mcpToolDetails, isPinned } = mcpSelect;
 
   const [isConfigModalOpen, setIsConfigModalOpen] = useState(false);
-  const [selectedToolForConfig, setSelectedToolForConfig] = useState<McpServerInfo | null>(null);
+  const [selectedToolForConfig, setSelectedToolForConfig] = useState<TPlugin | null>(null);
 
   const updateUserPluginsMutation = useUpdateUserPluginsMutation({
     onSuccess: () => {
@@ -129,6 +128,8 @@ function MCPSelect() {
     return null;
   }
 
+  const placeholderText =
+    startupConfig?.interface?.mcpServers?.placeholder || localize('com_ui_mcp_servers');
   return (
     <>
       <MultiSelect
@@ -138,7 +139,7 @@ function MCPSelect() {
         defaultSelectedValues={mcpValues ?? []}
         renderSelectedValues={renderSelectedValues}
         renderItemContent={renderItemContent}
-        placeholder={localize('com_ui_mcp_servers')}
+        placeholder={placeholderText}
         popoverClassName="min-w-fit"
         className="badge-icon min-w-fit"
         selectIcon={<MCPIcon className="icon-md text-text-primary" />}

client/src/components/Chat/Input/MCPSubMenu.tsx

@@ -11,6 +11,7 @@ interface MCPSubMenuProps {
   mcpValues?: string[];
   mcpServerNames: string[];
   handleMCPToggle: (serverName: string) => void;
+  placeholder?: string;
 }
 
 const MCPSubMenu = ({
@@ -19,6 +20,7 @@ const MCPSubMenu = ({
   mcpServerNames,
   setIsMCPPinned,
   handleMCPToggle,
+  placeholder,
   ...props
 }: MCPSubMenuProps) => {
   const localize = useLocalize();
@@ -38,7 +40,7 @@ const MCPSubMenu = ({
       >
         <div className="flex items-center gap-2">
           <MCPIcon className="icon-md" />
-          <span>{localize('com_ui_mcp_servers')}</span>
+          <span>{placeholder || localize('com_ui_mcp_servers')}</span>
           <ChevronRight className="ml-auto h-3 w-3" />
         </div>
         <button

client/src/components/Chat/Input/ToolsDropdown.tsx

@@ -18,8 +18,15 @@ const ToolsDropdown = ({ disabled }: ToolsDropdownProps) => {
   const localize = useLocalize();
   const isDisabled = disabled ?? false;
   const [isPopoverActive, setIsPopoverActive] = useState(false);
-  const { webSearch, codeInterpreter, fileSearch, mcpSelect, searchApiKeyForm, codeApiKeyForm } =
-    useBadgeRowContext();
+  const {
+    webSearch,
+    mcpSelect,
+    fileSearch,
+    startupConfig,
+    codeApiKeyForm,
+    codeInterpreter,
+    searchApiKeyForm,
+  } = useBadgeRowContext();
   const { setIsDialogOpen: setIsCodeDialogOpen, menuTriggerRef: codeMenuTriggerRef } =
     codeApiKeyForm;
   const { setIsDialogOpen: setIsSearchDialogOpen, menuTriggerRef: searchMenuTriggerRef } =
@@ -89,6 +96,8 @@ const ToolsDropdown = ({ disabled }: ToolsDropdownProps) => {
     [mcpSelect],
   );
 
+  const mcpPlaceholder = startupConfig?.interface?.mcpServers?.placeholder;
+
   const dropdownItems = useMemo(() => {
     const items: MenuItemProps[] = [
       {
@@ -246,8 +255,9 @@ const ToolsDropdown = ({ disabled }: ToolsDropdownProps) => {
           <MCPSubMenu
             {...props}
             mcpValues={mcpValues}
-            mcpServerNames={mcpServerNames}
             isMCPPinned={isMCPPinned}
+            placeholder={mcpPlaceholder}
+            mcpServerNames={mcpServerNames}
             setIsMCPPinned={setIsMCPPinned}
             handleMCPToggle={handleMCPToggle}
           />
@@ -262,6 +272,7 @@ const ToolsDropdown = ({ disabled }: ToolsDropdownProps) => {
     canRunCode,
     isMCPPinned,
     isCodePinned,
+    mcpPlaceholder,
     mcpServerNames,
     isSearchPinned,
     setIsMCPPinned,

client/src/hooks/Plugins/useMCPSelect.ts

@@ -1,7 +1,7 @@
 import { useRef, useEffect, useCallback, useMemo } from 'react';
 import { useRecoilState } from 'recoil';
 import { Constants, LocalStorageKeys, EModelEndpoint } from 'librechat-data-provider';
-import type { TPlugin, TPluginAuthConfig } from 'librechat-data-provider';
+import type { TPlugin } from 'librechat-data-provider';
 import { useAvailableToolsQuery } from '~/data-provider';
 import useLocalStorage from '~/hooks/useLocalStorageAlt';
 import { ephemeralAgentByConvoId } from '~/store';
@@ -24,20 +24,13 @@ interface UseMCPSelectOptions {
   conversationId?: string | null;
 }
 
-export interface McpServerInfo {
-  name: string;
-  pluginKey: string;
-  authConfig?: TPluginAuthConfig[];
-  authenticated?: boolean;
-}
-
 export function useMCPSelect({ conversationId }: UseMCPSelectOptions) {
   const key = conversationId ?? Constants.NEW_CONVO;
   const hasSetFetched = useRef<string | null>(null);
   const [ephemeralAgent, setEphemeralAgent] = useRecoilState(ephemeralAgentByConvoId(key));
   const { data: mcpToolDetails, isFetched } = useAvailableToolsQuery(EModelEndpoint.agents, {
     select: (data: TPlugin[]) => {
-      const mcpToolsMap = new Map<string, McpServerInfo>();
+      const mcpToolsMap = new Map<string, TPlugin>();
       data.forEach((tool) => {
         const isMCP = tool.pluginKey.includes(Constants.mcp_delimiter);
         if (isMCP && tool.chatMenu !== false) {
@@ -109,13 +102,13 @@ export function useMCPSelect({ conversationId }: UseMCPSelectOptions) {
   }, [mcpToolDetails]);
 
   return {
+    isPinned,
     mcpValues,
+    setIsPinned,
     setMCPValues,
     mcpServerNames,
     ephemeralAgent,
     mcpToolDetails,
     setEphemeralAgent,
-    isPinned,
-    setIsPinned,
   };
 }