💾 chore: Enhance Local Storage Handling and Update MCP SDK (#6809)

* feat: Update MCP package version and dependencies; refactor ToolContentPart type

* refactor: Change module type to commonjs and update rollup configuration, remove unused dev dependency

* refactor: Change async calls to synchronous for MCP and FlowStateManager retrieval

* chore: Add eslint disable comment for i18next rule in DropdownPopup component

* fix: improve statefulness of mcp servers selected if some were removed since last session

* feat: implement conversation storage cleanup functions and integrate them into mutation success handlers

* feat: enhance storage condition logic in useLocalStorageAlt to prevent unnecessary local storage writes

* refactor: streamline local storage update logic in useLocalStorageAlt

api/config/index.js

@@ -1,6 +1,7 @@
 const axios = require('axios');
 const { EventSource } = require('eventsource');
 const { Time, CacheKeys } = require('librechat-data-provider');
+const { MCPManager, FlowStateManager } = require('librechat-mcp');
 const logger = require('./winston');
 
 global.EventSource = EventSource;
@@ -9,11 +10,10 @@ let mcpManager = null;
 let flowManager = null;
 
 /**
- * @returns {Promise<MCPManager>}
+ * @returns {MCPManager}
  */
-async function getMCPManager() {
+function getMCPManager() {
   if (!mcpManager) {
-    const { MCPManager } = await import('librechat-mcp');
     mcpManager = MCPManager.getInstance(logger);
   }
   return mcpManager;
@@ -21,11 +21,10 @@ async function getMCPManager() {
 
 /**
  * @param {(key: string) => Keyv} getLogStores
- * @returns {Promise<FlowStateManager>}
+ * @returns {FlowStateManager}
  */
-async function getFlowStateManager(getLogStores) {
+function getFlowStateManager(getLogStores) {
   if (!flowManager) {
-    const { FlowStateManager } = await import('librechat-mcp');
     flowManager = new FlowStateManager(getLogStores(CacheKeys.FLOWS), {
       ttl: Time.ONE_MINUTE * 3,
       logger,

api/server/controllers/PluginController.js

@@ -108,7 +108,7 @@ const getAvailableTools = async (req, res) => {
     const pluginManifest = availableTools;
     const customConfig = await getCustomConfig();
     if (customConfig?.mcpServers != null) {
-      const mcpManager = await getMCPManager();
+      const mcpManager = getMCPManager();
       await mcpManager.loadManifestTools(pluginManifest);
     }
 

api/server/routes/actions.js

@@ -20,7 +20,7 @@ router.get('/:action_id/oauth/callback', async (req, res) => {
   const { action_id } = req.params;
   const { code, state } = req.query;
 
-  const flowManager = await getFlowStateManager(getLogStores);
+  const flowManager = getFlowStateManager(getLogStores);
   let identifier = action_id;
   try {
     let decodedState;

api/server/services/ActionService.js

@@ -189,7 +189,7 @@ async function createActionTool({
                     expires_at: Date.now() + Time.TWO_MINUTES,
                   },
                 };
-                const flowManager = await getFlowStateManager(getLogStores);
+                const flowManager = getFlowStateManager(getLogStores);
                 await flowManager.createFlowWithHandler(
                   `${identifier}:oauth_login:${config.metadata.thread_id}:${config.metadata.run_id}`,
                   'oauth_login',
@@ -265,7 +265,7 @@ async function createActionTool({
                     encrypted_oauth_client_id: encrypted.oauth_client_id,
                     encrypted_oauth_client_secret: encrypted.oauth_client_secret,
                   });
-                const flowManager = await getFlowStateManager(getLogStores);
+                const flowManager = getFlowStateManager(getLogStores);
                 const refreshData = await flowManager.createFlowWithHandler(
                   `${identifier}:refresh`,
                   'oauth_refresh',

api/server/services/AppService.js

@@ -66,7 +66,7 @@ const AppService = async (app) => {
   });
 
   if (config.mcpServers != null) {
-    const mcpManager = await getMCPManager();
+    const mcpManager = getMCPManager();
     await mcpManager.initializeMCP(config.mcpServers, processMCPEnv);
     await mcpManager.mapAvailableTools(availableTools);
   }

api/server/services/MCP.js

@@ -49,7 +49,7 @@ async function createMCPTool({ req, toolKey, provider }) {
   /** @type {(toolArguments: Object | string, config?: GraphRunnableConfig) => Promise<unknown>} */
   const _call = async (toolArguments, config) => {
     try {
-      const mcpManager = await getMCPManager();
+      const mcpManager = getMCPManager();
       const result = await mcpManager.callTool({
         serverName,
         toolName,

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

@@ -17,6 +17,20 @@ import useLocalStorage from '~/hooks/useLocalStorageAlt';
 import { useVerifyAgentToolAuth } from '~/data-provider';
 import { ephemeralAgentByConvoId } from '~/store';
 
+const storageCondition = (value: unknown, rawCurrentValue?: string | null) => {
+  if (rawCurrentValue) {
+    try {
+      const currentValue = rawCurrentValue?.trim() ?? '';
+      if (currentValue === 'true' && value === false) {
+        return true;
+      }
+    } catch (e) {
+      console.error(e);
+    }
+  }
+  return value !== undefined && value !== null && value !== '' && value !== false;
+};
+
 function CodeInterpreter({ conversationId }: { conversationId?: string | null }) {
   const localize = useLocalize();
   const key = conversationId ?? Constants.NEW_CONVO;
@@ -55,6 +69,7 @@ function CodeInterpreter({ conversationId }: { conversationId?: string | null })
     `${LocalStorageKeys.LAST_CODE_TOGGLE_}${key}`,
     isCodeToggleEnabled,
     setValue,
+    storageCondition,
   );
 
   const handleChange = useCallback(

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

@@ -8,14 +8,43 @@ import { ephemeralAgentByConvoId } from '~/store';
 import MCPIcon from '~/components/ui/MCPIcon';
 import { useLocalize } from '~/hooks';
 
+const storageCondition = (value: unknown, rawCurrentValue?: string | null) => {
+  if (rawCurrentValue) {
+    try {
+      const currentValue = rawCurrentValue?.trim() ?? '';
+      if (currentValue.length > 2) {
+        return true;
+      }
+    } catch (e) {
+      console.error(e);
+    }
+  }
+  return Array.isArray(value) && value.length > 0;
+};
+
 function MCPSelect({ conversationId }: { conversationId?: string | null }) {
   const localize = useLocalize();
-  const hasSetFetched = useRef(false);
   const key = conversationId ?? Constants.NEW_CONVO;
+  const hasSetFetched = useRef<string | null>(null);
+
+  const { data: mcpServerSet, isFetched } = useAvailableToolsQuery(EModelEndpoint.agents, {
+    select: (data) => {
+      const serverNames = new Set<string>();
+      data.forEach((tool) => {
+        if (tool.pluginKey.includes(Constants.mcp_delimiter)) {
+          const parts = tool.pluginKey.split(Constants.mcp_delimiter);
+          serverNames.add(parts[parts.length - 1]);
+        }
+      });
+      return serverNames;
+    },
+  });
+
   const [ephemeralAgent, setEphemeralAgent] = useRecoilState(ephemeralAgentByConvoId(key));
   const mcpState = useMemo(() => {
     return ephemeralAgent?.mcp ?? [];
   }, [ephemeralAgent?.mcp]);
+
   const setSelectedValues = useCallback(
     (values: string[] | null | undefined) => {
       if (!values) {
@@ -35,33 +64,23 @@ function MCPSelect({ conversationId }: { conversationId?: string | null }) {
     `${LocalStorageKeys.LAST_MCP_}${key}`,
     mcpState,
     setSelectedValues,
+    storageCondition,
   );
-  const { data: mcpServers, isFetched } = useAvailableToolsQuery(EModelEndpoint.agents, {
-    select: (data) => {
-      const serverNames = new Set<string>();
-      data.forEach((tool) => {
-        if (tool.pluginKey.includes(Constants.mcp_delimiter)) {
-          const parts = tool.pluginKey.split(Constants.mcp_delimiter);
-          serverNames.add(parts[parts.length - 1]);
-        }
-      });
-      return [...serverNames];
-    },
-  });
 
   useEffect(() => {
-    if (hasSetFetched.current) {
+    if (hasSetFetched.current === key) {
       return;
     }
     if (!isFetched) {
       return;
     }
-    hasSetFetched.current = true;
+    hasSetFetched.current = key;
-    if ((mcpServers?.length ?? 0) > 0) {
+    if ((mcpServerSet?.size ?? 0) > 0) {
+      setMCPValues(mcpValues.filter((mcp) => mcpServerSet?.has(mcp)));
       return;
     }
     setMCPValues([]);
-  }, [isFetched, setMCPValues, mcpServers?.length]);
+  }, [isFetched, setMCPValues, mcpServerSet, key, mcpValues]);
 
   const renderSelectedValues = useCallback(
     (values: string[], placeholder?: string) => {
@@ -76,7 +95,11 @@ function MCPSelect({ conversationId }: { conversationId?: string | null }) {
     [localize],
   );
 
-  if (!mcpServers || mcpServers.length === 0) {
+  const mcpServers = useMemo(() => {
+    return Array.from(mcpServerSet ?? []);
+  }, [mcpServerSet]);
+
+  if (!mcpServerSet || mcpServerSet.size === 0) {
     return null;
   }
 

client/src/components/Nav/SettingsTabs/Data/ClearChats.tsx

@@ -3,6 +3,7 @@ import { useClearConversationsMutation } from 'librechat-data-provider/react-que
 import { Label, Button, OGDialog, OGDialogTrigger, Spinner } from '~/components';
 import { useLocalize, useNewConvo } from '~/hooks';
 import OGDialogTemplate from '~/components/ui/OGDialogTemplate';
+import { clearAllConversationStorage } from '~/utils';
 
 export const ClearChats = () => {
   const localize = useLocalize();
@@ -15,6 +16,7 @@ export const ClearChats = () => {
       {},
       {
         onSuccess: () => {
+          clearAllConversationStorage();
           newConversation();
         },
       },

client/src/components/ui/DropdownPopup.tsx

@@ -83,6 +83,7 @@ const DropdownPopup: React.FC<DropdownProps> = ({
                 )}
                 {item.label}
                 {item.kbd != null && (
+                  // eslint-disable-next-line i18next/no-literal-string
                   <kbd className="ml-auto hidden font-sans text-xs text-black/50 group-hover:inline group-focus:inline dark:text-white/50">
                     ⌘{item.kbd}
                   </kbd>

client/src/data-provider/Auth/mutations.ts

@@ -4,6 +4,7 @@ import { MutationKeys, QueryKeys, dataService, request } from 'librechat-data-pr
 import type { UseMutationResult } from '@tanstack/react-query';
 import type * as t from 'librechat-data-provider';
 import useClearStates from '~/hooks/Config/useClearStates';
+import { clearAllConversationStorage } from '~/utils';
 import store from '~/store';
 
 /* login/logout */
@@ -79,6 +80,7 @@ export const useDeleteUserMutation = (
     onSuccess: (...args) => {
       resetDefaultPreset();
       clearStates();
+      clearAllConversationStorage();
       queryClient.removeQueries();
       options?.onSuccess?.(...args);
     },

client/src/data-provider/mutations.ts

@@ -18,6 +18,7 @@ import {
   updateConvoFields,
   updateConversation,
   deleteConversation,
+  clearConversationStorage,
 } from '~/utils';
 
 export type TGenTitleMutation = UseMutationResult<
@@ -562,6 +563,7 @@ export const useDeleteConversationMutation = (
         const current = queryClient.getQueryData<t.ConversationData>([QueryKeys.allConversations]);
         refetch({ refetchPage: (page, index) => index === (current?.pages.length ?? 1) - 1 });
         onSuccess?.(_data, vars, context);
+        clearConversationStorage(conversationId);
       },
       ..._options,
     },
@@ -897,7 +899,7 @@ export const useUploadAssistantAvatarMutation = (
   unknown // context
 > => {
   return useMutation([MutationKeys.assistantAvatarUpload], {
-    // eslint-disable-next-line @typescript-eslint/no-unused-vars
+
     mutationFn: ({ postCreation, ...variables }: t.AssistantAvatarVariables) =>
       dataService.uploadAssistantAvatar(variables),
     ...(options || {}),

client/src/hooks/useLocalStorageAlt.tsx

@@ -11,13 +11,16 @@ export default function useLocalStorage<T>(
   key: string,
   defaultValue: T,
   globalSetState?: (value: T) => void,
+  storageCondition?: (value: T, rawCurrentValue?: string | null) => boolean,
 ): [T, (value: T) => void] {
   const [value, setValue] = useState(defaultValue);
 
   useEffect(() => {
     const item = localStorage.getItem(key);
 
-    if (!item) {
+    if (!item && !storageCondition) {
+      localStorage.setItem(key, JSON.stringify(defaultValue));
+    } else if (!item && storageCondition && storageCondition(defaultValue)) {
       localStorage.setItem(key, JSON.stringify(defaultValue));
     }
 
@@ -47,9 +50,14 @@ export default function useLocalStorage<T>(
   const setValueWrap = (value: T) => {
     try {
       setValue(value);
-      localStorage.setItem(key, JSON.stringify(value));
+      const storeLocal = () => {
-      if (typeof window !== 'undefined') {
+        localStorage.setItem(key, JSON.stringify(value));
-        window.dispatchEvent(new StorageEvent('storage', { key }));
+        window?.dispatchEvent(new StorageEvent('storage', { key }));
+      };
+      if (!storageCondition) {
+        storeLocal();
+      } else if (storageCondition(value, localStorage.getItem(key))) {
+        storeLocal();
       }
       globalSetState?.(value);
     } catch (e) {

client/src/utils/localStorage.ts

@@ -1,4 +1,4 @@
-import { LocalStorageKeys, TConversation } from 'librechat-data-provider';
+import { LocalStorageKeys, TConversation, isUUID } from 'librechat-data-provider';
 
 export function getLocalStorageItems() {
   const items = {
@@ -45,3 +45,36 @@ export function clearLocalStorage(skipFirst?: boolean) {
     }
   });
 }
+
+export function clearConversationStorage(conversationId?: string | null) {
+  if (!conversationId) {
+    return;
+  }
+  if (!isUUID.safeParse(conversationId)?.success) {
+    console.warn(
+      `Conversation ID ${conversationId} is not a valid UUID. Skipping local storage cleanup.`,
+    );
+    return;
+  }
+  const keys = Object.keys(localStorage);
+  keys.forEach((key) => {
+    if (key.includes(conversationId)) {
+      localStorage.removeItem(key);
+    }
+  });
+}
+export function clearAllConversationStorage() {
+  const keys = Object.keys(localStorage);
+  keys.forEach((key) => {
+    if (
+      key.startsWith(LocalStorageKeys.LAST_MCP_) ||
+      key.startsWith(LocalStorageKeys.LAST_CODE_TOGGLE_) ||
+      key.startsWith(LocalStorageKeys.TEXT_DRAFT) ||
+      key.startsWith(LocalStorageKeys.ASST_ID_PREFIX) ||
+      key.startsWith(LocalStorageKeys.AGENT_ID_PREFIX) ||
+      key.startsWith(LocalStorageKeys.LAST_CONVO_SETUP)
+    ) {
+      localStorage.removeItem(key);
+    }
+  });
+}

package-lock.json

@@ -18649,304 +18649,6 @@
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       }
     },
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-        "cors": "^2.8.5",
-        "cross-spawn": "^7.0.3",
-        "eventsource": "^3.0.2",
-        "express": "^5.0.1",
-        "express-rate-limit": "^7.5.0",
-        "pkce-challenge": "^4.1.0",
-        "raw-body": "^3.0.0",
-        "zod": "^3.23.8",
-        "zod-to-json-schema": "^3.24.1"
-      },
-      "engines": {
-        "node": ">=18"
-      }
-    },
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+      "dependencies": {
+        "encodeurl": "^2.0.0",
+        "escape-html": "^1.0.3",
+        "parseurl": "^1.3.3",
+        "send": "^1.2.0"
+      },
+      "engines": {
+        "node": ">= 18"
+      }
+    },
+    "packages/mcp/node_modules/type-is": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/type-is/-/type-is-2.0.1.tgz",
+      "integrity": "sha512-OZs6gsjF4vMp32qrCbiVSkrFmXtG/AZhY3t0iAMrMBiAZyV9oALtXO8hsrHbMXF9x6L3grlFuwW2oAz7cav+Gw==",
+      "dependencies": {
+        "content-type": "^1.0.5",
+        "media-typer": "^1.1.0",
+        "mime-types": "^3.0.0"
+      },
+      "engines": {
+        "node": ">= 0.6"
+      }
     }
   }
 }

packages/mcp/package.json

@@ -1,21 +1,21 @@
 {
   "name": "librechat-mcp",
-  "version": "1.1.0",
+  "version": "1.2.0",
-  "type": "module",
+  "type": "commonjs",
   "description": "MCP services for LibreChat",
   "main": "dist/index.js",
   "module": "dist/index.es.js",
   "types": "./dist/types/index.d.ts",
   "exports": {
     ".": {
-      "import": "./dist/index.es.js",
+      "require": "./dist/index.js",
       "types": "./dist/types/index.d.ts"
     }
   },
   "scripts": {
     "clean": "rimraf dist",
-    "build": "npm run clean && rollup -c --configPlugin=@rollup/plugin-typescript",
+    "build": "npm run clean && rollup -c --bundleConfigAsCjs",
-    "build:watch": "rollup -c -w --configPlugin=@rollup/plugin-typescript",
+    "build:watch": "rollup -c -w --bundleConfigAsCjs",
     "test": "jest --coverage --watch",
     "test:ci": "jest --coverage --ci",
     "verify": "npm run test:ci",
@@ -60,7 +60,6 @@
     "rollup": "^4.22.4",
     "rollup-plugin-generate-package-json": "^3.2.0",
     "rollup-plugin-peer-deps-external": "^2.2.4",
-    "rollup-plugin-typescript2": "^0.35.0",
     "ts-node": "^10.9.2",
     "typescript": "^5.0.4"
   },
@@ -68,7 +67,7 @@
     "registry": "https://registry.npmjs.org/"
   },
   "dependencies": {
-    "@modelcontextprotocol/sdk": "^1.8.0",
+    "@modelcontextprotocol/sdk": "^1.9.0",
     "diff": "^7.0.0",
     "eventsource": "^3.0.2",
     "express": "^4.21.2"

packages/mcp/rollup.config.js

@@ -1,11 +1,11 @@
 // rollup.config.js
-import typescript from 'rollup-plugin-typescript2';
-import resolve from '@rollup/plugin-node-resolve';
-import peerDepsExternal from 'rollup-plugin-peer-deps-external';
-import commonjs from '@rollup/plugin-commonjs';
-import replace from '@rollup/plugin-replace';
-import terser from '@rollup/plugin-terser';
 import { readFileSync } from 'fs';
+import terser from '@rollup/plugin-terser';
+import replace from '@rollup/plugin-replace';
+import commonjs from '@rollup/plugin-commonjs';
+import resolve from '@rollup/plugin-node-resolve';
+import typescript from '@rollup/plugin-typescript';
+import peerDepsExternal from 'rollup-plugin-peer-deps-external';
 
 const pkg = JSON.parse(readFileSync(new URL('./package.json', import.meta.url), 'utf8'));
 
@@ -24,16 +24,18 @@ const plugins = [
   }),
   typescript({
     tsconfig: './tsconfig.json',
-    useTsconfigDeclarationDir: true,
+    outDir: './dist',
+    sourceMap: true,
+    inlineSourceMap: true,
   }),
   terser(),
 ];
 
-const esmBuild = {
+const cjsBuild = {
   input: 'src/index.ts',
   output: {
-    file: pkg.module,
+    file: pkg.main,
-    format: 'esm',
+    format: 'cjs',
     sourcemap: true,
     exports: 'named',
   },
@@ -42,4 +44,4 @@ const esmBuild = {
   plugins,
 };
 
-export default esmBuild;
+export default cjsBuild;

packages/mcp/src/types/mcp.ts

@@ -8,6 +8,7 @@ import {
 } from 'librechat-data-provider';
 import type { JsonSchemaType, TPlugin } from 'librechat-data-provider';
 import { ToolSchema, ListToolsResultSchema } from '@modelcontextprotocol/sdk/types.js';
+import type * as t from '@modelcontextprotocol/sdk/types.js';
 
 export type StdioOptions = z.infer<typeof StdioOptionsSchema>;
 export type WebSocketOptions = z.infer<typeof WebSocketOptionsSchema>;
@@ -44,25 +45,7 @@ export type ConnectionState = 'disconnected' | 'connecting' | 'connected' | 'err
 
 export type MCPTool = z.infer<typeof ToolSchema>;
 export type MCPToolListResponse = z.infer<typeof ListToolsResultSchema>;
-export type ToolContentPart =
+export type ToolContentPart = t.TextContent | t.ImageContent | t.EmbeddedResource | t.AudioContent;
-  | {
-      type: 'text';
-      text: string;
-    }
-  | {
-      type: 'image';
-      data: string;
-      mimeType: string;
-    }
-  | {
-      type: 'resource';
-      resource: {
-        uri: string;
-        mimeType?: string;
-        text?: string;
-        blob?: string;
-      };
-    };
 export type ImageContent = Extract<ToolContentPart, { type: 'image' }>;
 export type MCPToolCallResponse =
   | undefined