enhancement: ux tool call permission dialog and state active (#5157)

* enhancement: mcp toold dialog approval

* enhancement: update mcp tool enable or disable

* chore: add toggle mcl global permission

web-app/src/components/ui/button.tsx

@@ -5,7 +5,7 @@ import { cva, type VariantProps } from 'class-variance-authority'
 import { cn } from '@/lib/utils'
 
 const buttonVariants = cva(
-  "inline-flex items-center justify-center gap-2 whitespace-nowrap rounded-md text-sm font-medium transition-all disabled:pointer-events-none disabled:opacity-50 [&_svg]:pointer-events-none [&_svg:not([class*='size-'])]:size-4 shrink-0 [&_svg]:shrink-0 outline-none focus-visible:border-ring focus-visible:ring-ring/50 focus-visible:ring-[3px] aria-invalid:ring-destructive/20 dark:aria-invalid:ring-destructive/40 aria-invalid:border-destructive cursor-pointer",
+  "inline-flex items-center justify-center gap-2 whitespace-nowrap rounded-md text-sm font-medium transition-all disabled:pointer-events-none disabled:opacity-50 [&_svg]:pointer-events-none [&_svg:not([class*='size-'])]:size-4 shrink-0 [&_svg]:shrink-0 outline-none focus-visible:border-ring focus-visible:ring-ring/50 focus-visible:ring-[0px] aria-invalid:ring-destructive/20 dark:aria-invalid:ring-destructive/40 aria-invalid:border-destructive cursor-pointer focus:outline-none",
   {
     variants: {
       variant: {

web-app/src/components/ui/dialog.tsx

@@ -44,11 +44,18 @@ function DialogOverlay({
   )
 }
 
+type DialogContentProps = React.ComponentProps<
+  typeof DialogPrimitive.Content
+> & {
+  showCloseButton?: boolean
+}
+
 function DialogContent({
+  showCloseButton = true,
   className,
   children,
   ...props
-}: React.ComponentProps<typeof DialogPrimitive.Content>) {
+}: DialogContentProps) {
   return (
     <DialogPortal data-slot="dialog-portal">
       <DialogOverlay />
@@ -61,10 +68,12 @@ function DialogContent({
         {...props}
       >
         {children}
-        <DialogPrimitive.Close className="data-[state=open]:text-main-view-fg/50 absolute top-4 right-4 rounded-xs opacity-70 transition-opacity hover:opacity-100 focus:ring-0 focus:outline-0 disabled:pointer-events-none [&_svg]:pointer-events-none [&_svg]:shrink-0 [&_svg:not([class*='size-'])]:size-4 cursor-pointer">
+        {showCloseButton && (
-          <XIcon />
+          <DialogPrimitive.Close className="data-[state=open]:text-main-view-fg/50 absolute top-4 right-4 rounded-xs opacity-70 transition-opacity hover:opacity-100 focus:ring-0 focus:outline-0 disabled:pointer-events-none [&_svg]:pointer-events-none [&_svg]:shrink-0 [&_svg:not([class*='size-'])]:size-4 cursor-pointer">
-          <span className="sr-only">Close</span>
+            <XIcon />
-        </DialogPrimitive.Close>
+            <span className="sr-only">Close</span>
+          </DialogPrimitive.Close>
+        )}
       </DialogPrimitive.Content>
     </DialogPortal>
   )

web-app/src/constants/localStorage.ts

@@ -2,16 +2,17 @@ export const localStorageKey = {
   LeftPanel: 'left-panel',
   threads: 'threads',
   messages: 'messages',
-  assistant: 'assistant',
   theme: 'theme',
   modelProvider: 'model-provider',
   settingAppearance: 'setting-appearance',
   settingGeneral: 'setting-general',
   settingCodeBlock: 'setting-code-block',
-  settingMCPSevers: 'setting-mcp-servers',
   settingLocalApiServer: 'setting-local-api-server',
   settingProxyConfig: 'setting-proxy-config',
   settingHardware: 'setting-hardware',
   productAnalyticPrompt: 'productAnalyticPrompt',
   productAnalytic: 'productAnalytic',
+  toolApproval: 'tool-approval',
+  toolAvailability: 'tool-availability',
+  mcpGlobalPermissions: 'mcp-global-permissions',
 }

web-app/src/containers/ChatInput.tsx

@@ -27,22 +27,27 @@ import { MovingBorder } from './MovingBorder'
 import { useChat } from '@/hooks/useChat'
 import DropdownModelProvider from '@/containers/DropdownModelProvider'
 import { ModelLoader } from '@/containers/loaders/ModelLoader'
+import DropdownToolsAvailable from '@/containers/DropdownToolsAvailable'
+import { getConnectedServers } from '@/services/mcp'
 
 type ChatInputProps = {
   className?: string
   showSpeedToken?: boolean
   model?: ThreadModel
+  initialMessage?: boolean
 }
 
 const ChatInput = ({
   model,
   className,
   showSpeedToken = true,
+  initialMessage,
 }: ChatInputProps) => {
   const textareaRef = useRef<HTMLTextAreaElement>(null)
   const [isFocused, setIsFocused] = useState(false)
   const [rows, setRows] = useState(1)
-  const { streamingContent, abortControllers, loadingModel } = useAppState()
+  const { streamingContent, abortControllers, loadingModel, tools } =
+    useAppState()
   const { prompt, setPrompt } = usePrompt()
   const { currentThreadId } = useThreads()
   const { t } = useTranslation()
@@ -62,6 +67,30 @@ const ChatInput = ({
       dataUrl: string
     }>
   >([])
+  const [connectedServers, setConnectedServers] = useState<string[]>([])
+
+  // Check for connected MCP servers
+  useEffect(() => {
+    const checkConnectedServers = async () => {
+      try {
+        const servers = await getConnectedServers()
+        setConnectedServers(servers)
+      } catch (error) {
+        console.error('Failed to get connected servers:', error)
+        setConnectedServers([])
+      }
+    }
+
+    checkConnectedServers()
+
+    // Poll for connected servers every 3 seconds
+    const intervalId = setInterval(checkConnectedServers, 3000)
+
+    return () => clearInterval(intervalId)
+  }, [])
+
+  // Check if there are active MCP servers
+  const hasActiveMCPServers = connectedServers.length > 0 || tools.length > 0
 
   const handleSendMesage = (prompt: string) => {
     if (!selectedModel) {
@@ -404,11 +433,31 @@ const ChatInput = ({
                   </div>
                 )}
 
-                {selectedModel?.capabilities?.includes('tools') && (
+                {selectedModel?.capabilities?.includes('tools') &&
-                  <div className="h-6 p-1 flex items-center justify-center rounded-sm hover:bg-main-view-fg/10 transition-all duration-200 ease-in-out gap-1">
+                  hasActiveMCPServers && (
-                    <IconTool size={18} className="text-main-view-fg/50" />
+                    <DropdownToolsAvailable initialMessage={initialMessage}>
-                  </div>
+                      {(isOpen, toolsCount) => (
-                )}
+                        <div
+                          className={cn(
+                            'h-6 p-1 flex items-center justify-center rounded-sm hover:bg-main-view-fg/10 transition-all duration-200 ease-in-out gap-1 cursor-pointer relative',
+                            isOpen && 'bg-main-view-fg/10'
+                          )}
+                        >
+                          <IconTool
+                            size={18}
+                            className="text-main-view-fg/50"
+                          />
+                          {toolsCount > 0 && (
+                            <div className="absolute -top-1 -right-1.5 bg-accent text-accent-fg text-xs rounded-full size-4 flex items-center justify-center font-medium">
+                              <span className="leading-0">
+                                {toolsCount > 99 ? '99+' : toolsCount}
+                              </span>
+                            </div>
+                          )}
+                        </div>
+                      )}
+                    </DropdownToolsAvailable>
+                  )}
 
                 {selectedModel?.capabilities?.includes('web_search') && (
                   <div className="h-6 p-1 flex items-center justify-center rounded-sm hover:bg-main-view-fg/10 transition-all duration-200 ease-in-out gap-1">

web-app/src/containers/DropdownToolsAvailable.tsx

@@ -0,0 +1,176 @@
+import { useEffect, useState } from 'react'
+import {
+  DropdownMenu,
+  DropdownMenuContent,
+  DropdownMenuItem,
+  DropdownMenuLabel,
+  DropdownMenuSeparator,
+  DropdownMenuTrigger,
+} from '@/components/ui/dropdown-menu'
+import { Switch } from '@/components/ui/switch'
+import { getTools } from '@/services/mcp'
+import { MCPTool } from '@/types/completion'
+
+import { useThreads } from '@/hooks/useThreads'
+import { useToolAvailable } from '@/hooks/useToolAvailable'
+
+import React from 'react'
+
+interface DropdownToolsAvailableProps {
+  children: (isOpen: boolean, toolsCount: number) => React.ReactNode
+  initialMessage?: boolean
+}
+
+export default function DropdownToolsAvailable({
+  children,
+  initialMessage = false,
+}: DropdownToolsAvailableProps) {
+  const [tools, setTools] = useState<MCPTool[]>([])
+  const [isOpen, setIsOpen] = useState(false)
+  const { getCurrentThread } = useThreads()
+  const {
+    isToolAvailable,
+    setToolAvailableForThread,
+    setDefaultAvailableTools,
+    initializeThreadTools,
+    getAvailableToolsForThread,
+    getDefaultAvailableTools,
+  } = useToolAvailable()
+
+  const currentThread = getCurrentThread()
+
+  useEffect(() => {
+    const fetchTools = async () => {
+      try {
+        const availableTools = await getTools()
+        setTools(availableTools)
+
+        // If this is for the initial message (index page) and no defaults are set,
+        // initialize with all tools as default
+        if (
+          initialMessage &&
+          getDefaultAvailableTools().length === 0 &&
+          availableTools.length > 0
+        ) {
+          setDefaultAvailableTools(availableTools.map((tool) => tool.name))
+        }
+      } catch (error) {
+        console.error('Failed to fetch tools:', error)
+        setTools([])
+      }
+    }
+
+    // Only fetch tools once when component mounts
+    fetchTools()
+  }, [initialMessage, setDefaultAvailableTools, getDefaultAvailableTools])
+
+  // Separate effect for thread initialization - only when we have tools and a new thread
+  useEffect(() => {
+    if (tools.length > 0 && currentThread?.id) {
+      initializeThreadTools(currentThread.id, tools)
+    }
+  }, [currentThread?.id, tools, initializeThreadTools])
+
+  const handleToolToggle = (toolName: string, checked: boolean) => {
+    if (initialMessage) {
+      // Update default tools for new threads/index page
+      const currentDefaults = getDefaultAvailableTools()
+      if (checked) {
+        if (!currentDefaults.includes(toolName)) {
+          setDefaultAvailableTools([...currentDefaults, toolName])
+        }
+      } else {
+        setDefaultAvailableTools(
+          currentDefaults.filter((name) => name !== toolName)
+        )
+      }
+    } else if (currentThread?.id) {
+      // Update tools for specific thread
+      setToolAvailableForThread(currentThread.id, toolName, checked)
+    }
+  }
+
+  const isToolChecked = (toolName: string): boolean => {
+    if (initialMessage) {
+      // Use default tools for index page
+      return getDefaultAvailableTools().includes(toolName)
+    } else if (currentThread?.id) {
+      // Use thread-specific tools
+      return isToolAvailable(currentThread.id, toolName)
+    }
+    return false
+  }
+
+  const getEnabledToolsCount = (): number => {
+    if (initialMessage) {
+      return getDefaultAvailableTools().length
+    } else if (currentThread?.id) {
+      return getAvailableToolsForThread(currentThread.id).length
+    }
+    return 0
+  }
+
+  const renderTrigger = () => children(isOpen, getEnabledToolsCount())
+
+  if (tools.length === 0) {
+    return (
+      <DropdownMenu onOpenChange={setIsOpen}>
+        <DropdownMenuTrigger asChild>{renderTrigger()}</DropdownMenuTrigger>
+        <DropdownMenuContent align="start" className="max-w-64">
+          <DropdownMenuItem disabled>No tools available</DropdownMenuItem>
+        </DropdownMenuContent>
+      </DropdownMenu>
+    )
+  }
+
+  return (
+    <DropdownMenu onOpenChange={setIsOpen}>
+      <DropdownMenuTrigger asChild>{renderTrigger()}</DropdownMenuTrigger>
+
+      <DropdownMenuContent
+        side="top"
+        align="start"
+        className="max-w-64 max-h-64 "
+      >
+        <DropdownMenuLabel className="flex items-center gap-2 sticky -top-1 z-10 bg-main-view px-4 pl-2 py-2">
+          Available Tools
+        </DropdownMenuLabel>
+        <DropdownMenuSeparator />
+        <div>
+          {tools.map((tool) => {
+            const isChecked = isToolChecked(tool.name)
+            return (
+              <div
+                key={tool.name}
+                className="px-2 py-2 hover:bg-main-view-fg/5 rounded-sm"
+              >
+                <div className="flex items-start justify-between gap-3">
+                  <div className="flex-1 min-w-0">
+                    <div className="flex items-start justify-between gap-4">
+                      <div>
+                        <h4 className="text-sm font-medium truncate">
+                          {tool.name}
+                        </h4>
+                        {tool.description && (
+                          <p className="text-xs text-main-view-fg/70 mt-1 line-clamp-2">
+                            {tool.description}
+                          </p>
+                        )}
+                      </div>
+                      <Switch
+                        checked={isChecked}
+                        onCheckedChange={(checked) =>
+                          handleToolToggle(tool.name, checked)
+                        }
+                      />
+                    </div>
+                  </div>
+                </div>
+              </div>
+            )
+          })}
+        </div>
+      </DropdownMenuContent>
+    </DropdownMenu>
+  )
+}

web-app/src/containers/RenderMarkdown.tsx

@@ -166,7 +166,13 @@ function RenderMarkdownComponent({
 
   // Render the markdown content
   return (
-    <div className={cn('markdown break-words select-text', className)}>
+    <div
+      className={cn(
+        'markdown break-words select-text',
+        isUser && 'is-user',
+        className
+      )}
+    >
       <ReactMarkdown
         remarkPlugins={remarkPlugins}
         rehypePlugins={rehypePlugins}

web-app/src/containers/ToolCallBlock.tsx

@@ -39,6 +39,7 @@ const ToolCallBlock = ({ id, name, result, loading }: Props) => {
     <div
       className="mx-auto w-full cursor-pointer break-words"
       onClick={handleClick}
+      data-tool-call-block={id}
     >
       <div className="rounded-lg bg-main-view-fg/4 border border-dashed border-main-view-fg/10">
         <div className="flex items-center gap-3 p-2">

web-app/src/containers/dialogs/ToolApproval.tsx

@@ -0,0 +1,77 @@
+import {
+  Dialog,
+  DialogContent,
+  DialogDescription,
+  DialogFooter,
+  DialogHeader,
+  DialogTitle,
+} from '@/components/ui/dialog'
+import { Button } from '@/components/ui/button'
+import { useToolApproval } from '@/hooks/useToolApproval'
+import { AlertTriangle } from 'lucide-react'
+
+export default function ToolApproval() {
+  const { isModalOpen, modalProps, setModalOpen } = useToolApproval()
+
+  if (!modalProps) {
+    return null
+  }
+
+  const { toolName, onApprove, onDeny } = modalProps
+
+  const handleAllowOnce = () => {
+    onApprove(true) // true = allow once only
+  }
+
+  const handleAllow = () => {
+    onApprove(false) // false = remember for this thread
+  }
+
+  const handleDeny = () => {
+    onDeny()
+  }
+
+  return (
+    <Dialog open={isModalOpen} onOpenChange={setModalOpen}>
+      <DialogContent showCloseButton={false}>
+        <DialogHeader>
+          <div className="flex items-start gap-3">
+            <div className="shrink-0">
+              <AlertTriangle className="size-4" />
+            </div>
+            <div>
+              <DialogTitle>Tool Call Request</DialogTitle>
+              <DialogDescription className="mt-1 text-main-view-fg/70">
+                The assistant wants to use the tool: <strong>{toolName}</strong>
+              </DialogDescription>
+            </div>
+          </div>
+        </DialogHeader>
+
+        <div className="bg-main-view-fg/8 p-2 border border-main-view-fg/5 rounded-lg">
+          <p className="text-sm text-main-view-fg/70 leading-relaxed">
+            <strong>Security Notice:</strong> Malicious tools or conversation
+            content could potentially trick the assistant into attempting
+            harmful actions. Review each tool call carefully before approving.
+          </p>
+        </div>
+
+        <DialogFooter className="flex flex-col gap-2 sm:flex-row sm:justify-end">
+          <Button variant="link" onClick={handleDeny} className="w-full">
+            Deny
+          </Button>
+          <Button
+            variant="link"
+            onClick={handleAllowOnce}
+            className="border border-main-view-fg/20"
+          >
+            Allow Once
+          </Button>
+          <Button variant="default" onClick={handleAllow}>
+            Always Allow
+          </Button>
+        </DialogFooter>
+      </DialogContent>
+    </Dialog>
+  )
+}

web-app/src/hooks/useChat.ts

@@ -26,6 +26,9 @@ import { listen } from '@tauri-apps/api/event'
 import { SystemEvent } from '@/types/events'
 import { stopModel, startModel } from '@/services/models'
 
+import { useToolApproval } from '@/hooks/useToolApproval'
+import { useToolAvailable } from '@/hooks/useToolAvailable'
+
 export const useChat = () => {
   const { prompt, setPrompt } = usePrompt()
   const {
@@ -39,6 +42,10 @@ export const useChat = () => {
   } = useAppState()
   const { currentAssistant } = useAssistant()
 
+  const { approvedTools, showApprovalModal, allowAllMCPPermissions } =
+    useToolApproval()
+  const { getAvailableToolsForThread } = useToolAvailable()
+
   const { getProviderByName, selectedModel, selectedProvider } =
     useModelProvider()
 
@@ -123,9 +130,16 @@ export const useChat = () => {
 
         let isCompleted = false
 
+        // Filter tools based on model capabilities and available tools for this thread
         let availableTools = selectedModel?.capabilities?.includes('tools')
-          ? tools
+          ? tools.filter((tool) => {
+              const availableToolNames = getAvailableToolsForThread(
+                activeThread.id
+              )
+              return availableToolNames.includes(tool.name)
+            })
           : []
+
         // TODO: Later replaced by Agent setup?
         const followUpWithToolUse = true
         while (!isCompleted && !abortController.signal.aborted) {
@@ -193,7 +207,10 @@ export const useChat = () => {
             toolCalls,
             builder,
             finalContent,
-            abortController
+            abortController,
+            approvedTools,
+            allowAllMCPPermissions ? undefined : showApprovalModal,
+            allowAllMCPPermissions
           )
           addMessage(updatedMessage ?? finalContent)
 
@@ -225,6 +242,10 @@ export const useChat = () => {
       tools,
       updateLoadingModel,
       updateTokenSpeed,
+      approvedTools,
+      showApprovalModal,
+      getAvailableToolsForThread,
+      allowAllMCPPermissions,
     ]
   )
 

web-app/src/hooks/useToolApproval.ts

@@ -0,0 +1,107 @@
+import { create } from 'zustand'
+import { persist, createJSONStorage } from 'zustand/middleware'
+import { localStorageKey } from '@/constants/localStorage'
+
+export type ToolApprovalModalProps = {
+  toolName: string
+  threadId: string
+  onApprove: (allowOnce: boolean) => void
+  onDeny: () => void
+}
+
+type ToolApprovalState = {
+  // Track approved tools per thread
+  approvedTools: Record<string, string[]> // threadId -> toolNames[]
+  // Global MCP permission toggle
+  allowAllMCPPermissions: boolean
+  // Modal state
+  isModalOpen: boolean
+  modalProps: ToolApprovalModalProps | null
+
+  // Actions
+  approveToolForThread: (threadId: string, toolName: string) => void
+  isToolApproved: (threadId: string, toolName: string) => boolean
+  showApprovalModal: (toolName: string, threadId: string) => Promise<boolean>
+  closeModal: () => void
+  setModalOpen: (open: boolean) => void
+  setAllowAllMCPPermissions: (allow: boolean) => void
+}
+
+export const useToolApproval = create<ToolApprovalState>()(
+  persist(
+    (set, get) => ({
+      approvedTools: {},
+      allowAllMCPPermissions: false,
+      isModalOpen: false,
+      modalProps: null,
+
+      approveToolForThread: (threadId: string, toolName: string) => {
+        set((state) => ({
+          approvedTools: {
+            ...state.approvedTools,
+            [threadId]: [
+              ...(state.approvedTools[threadId] || []),
+              toolName,
+            ].filter((tool, index, arr) => arr.indexOf(tool) === index), // Remove duplicates
+          },
+        }))
+      },
+
+      isToolApproved: (threadId: string, toolName: string) => {
+        const state = get()
+        return state.approvedTools[threadId]?.includes(toolName) || false
+      },
+
+      showApprovalModal: (toolName: string, threadId: string) => {
+        return new Promise<boolean>((resolve) => {
+          set({
+            isModalOpen: true,
+            modalProps: {
+              toolName,
+              threadId,
+              onApprove: (allowOnce: boolean) => {
+                if (!allowOnce) {
+                  // If not "allow once", add to approved tools for this thread
+                  get().approveToolForThread(threadId, toolName)
+                }
+                get().closeModal()
+                resolve(true)
+              },
+              onDeny: () => {
+                get().closeModal()
+                resolve(false)
+              },
+            },
+          })
+        })
+      },
+
+      closeModal: () => {
+        set({
+          isModalOpen: false,
+          modalProps: null,
+        })
+      },
+
+      setModalOpen: (open: boolean) => {
+        set({ isModalOpen: open })
+        if (!open) {
+          get().closeModal()
+        }
+      },
+
+      setAllowAllMCPPermissions: (allow: boolean) => {
+        set({ allowAllMCPPermissions: allow })
+      },
+    }),
+    {
+      name: localStorageKey.toolApproval,
+      storage: createJSONStorage(() => localStorage),
+      // Only persist approved tools and global permission setting, not modal state
+      partialize: (state) => ({
+        approvedTools: state.approvedTools,
+        allowAllMCPPermissions: state.allowAllMCPPermissions,
+      }),
+    }
+  )
+)

web-app/src/hooks/useToolAvailable.ts

@@ -0,0 +1,117 @@
+import { create } from 'zustand'
+import { persist, createJSONStorage } from 'zustand/middleware'
+import { localStorageKey } from '@/constants/localStorage'
+import { MCPTool } from '@/types/completion'
+
+type ToolAvailableState = {
+  // Track available tools per thread
+  availableTools: Record<string, string[]> // threadId -> toolNames[]
+  // Global default available tools (for new threads/index page)
+  defaultAvailableTools: string[]
+
+  // Actions
+  setToolAvailableForThread: (
+    threadId: string,
+    toolName: string,
+    available: boolean
+  ) => void
+  isToolAvailable: (threadId: string, toolName: string) => boolean
+  getAvailableToolsForThread: (threadId: string) => string[]
+  setDefaultAvailableTools: (toolNames: string[]) => void
+  getDefaultAvailableTools: () => string[]
+  // Initialize thread tools from default or existing thread settings
+  initializeThreadTools: (threadId: string, allTools: MCPTool[]) => void
+}
+
+export const useToolAvailable = create<ToolAvailableState>()(
+  persist(
+    (set, get) => ({
+      availableTools: {},
+      defaultAvailableTools: [],
+
+      setToolAvailableForThread: (
+        threadId: string,
+        toolName: string,
+        available: boolean
+      ) => {
+        set((state) => {
+          const currentTools = state.availableTools[threadId] || []
+          let updatedTools: string[]
+
+          if (available) {
+            // Add tool if not already present
+            updatedTools = currentTools.includes(toolName)
+              ? currentTools
+              : [...currentTools, toolName]
+          } else {
+            // Remove tool
+            updatedTools = currentTools.filter((tool) => tool !== toolName)
+          }
+
+          return {
+            availableTools: {
+              ...state.availableTools,
+              [threadId]: updatedTools,
+            },
+          }
+        })
+      },
+
+      isToolAvailable: (threadId: string, toolName: string) => {
+        const state = get()
+        // If no thread-specific settings, use default
+        if (!state.availableTools[threadId]) {
+          return state.defaultAvailableTools.includes(toolName)
+        }
+        return state.availableTools[threadId]?.includes(toolName) || false
+      },
+
+      getAvailableToolsForThread: (threadId: string) => {
+        const state = get()
+        // If no thread-specific settings, use default
+        if (!state.availableTools[threadId]) {
+          return state.defaultAvailableTools
+        }
+        return state.availableTools[threadId] || []
+      },
+
+      setDefaultAvailableTools: (toolNames: string[]) => {
+        set({ defaultAvailableTools: toolNames })
+      },
+
+      getDefaultAvailableTools: () => {
+        return get().defaultAvailableTools
+      },
+
+      initializeThreadTools: (threadId: string, allTools: MCPTool[]) => {
+        const state = get()
+        // If thread already has settings, don't override
+        if (state.availableTools[threadId]) {
+          return
+        }
+
+        // Initialize with default tools only
+        // Don't auto-enable all tools if defaults are explicitly empty
+        const initialTools = state.defaultAvailableTools.filter((toolName) =>
+          allTools.some((tool) => tool.name === toolName)
+        )
+
+        set((currentState) => ({
+          availableTools: {
+            ...currentState.availableTools,
+            [threadId]: initialTools,
+          },
+        }))
+      },
+    }),
+    {
+      name: localStorageKey.toolAvailability,
+      storage: createJSONStorage(() => localStorage),
+      // Persist all state
+      partialize: (state) => ({
+        availableTools: state.availableTools,
+        defaultAvailableTools: state.defaultAvailableTools,
+      }),
+    }
+  )
+)

web-app/src/lib/completion.ts

@@ -252,12 +252,18 @@ export const extractToolCall = (
  * @param builder
  * @param message
  * @param content
+ * @param approvedTools - Record of approved tools per thread
+ * @param showModal - Function to show approval modal, returns true if approved
+ * @param allowAllMCPPermissions - Global setting to allow all MCP permissions without modal
  */
 export const postMessageProcessing = async (
   calls: ChatCompletionMessageToolCall[],
   builder: CompletionMessagesBuilder,
   message: ThreadMessage,
-  abortController: AbortController
+  abortController: AbortController,
+  approvedTools: Record<string, string[]> = {},
+  showModal?: (toolName: string, threadId: string) => Promise<boolean>,
+  allowAllMCPPermissions: boolean = false
 ) => {
   // Handle completed tool calls
   if (calls.length) {
@@ -284,12 +290,30 @@ export const postMessageProcessing = async (
         ],
       }
 
-      const result = await callTool({
+      // Check if tool is approved or show modal for approval
-        toolName: toolCall.function.name,
+      const approved =
-        arguments: toolCall.function.arguments.length
+        allowAllMCPPermissions ||
-          ? JSON.parse(toolCall.function.arguments)
+        approvedTools[message.thread_id]?.includes(toolCall.function.name) ||
-          : {},
+        (showModal
-      })
+          ? await showModal(toolCall.function.name, message.thread_id)
+          : true)
+
+      const result = approved
+        ? await callTool({
+            toolName: toolCall.function.name,
+            arguments: toolCall.function.arguments.length
+              ? JSON.parse(toolCall.function.arguments)
+              : {},
+          })
+        : {
+            content: [
+              {
+                type: 'text',
+                text: 'The user has chosen to disallow the tool call.',
+              },
+            ],
+          }
+
       if ('error' in result && result.error) break
 
       message.metadata = {

web-app/src/routes/__root.tsx

@@ -17,6 +17,7 @@ import { PromptAnalytic } from '@/containers/analytics/PromptAnalytic'
 import { AnalyticProvider } from '@/providers/AnalyticProvider'
 import { useLeftPanel } from '@/hooks/useLeftPanel'
 import { cn } from '@/lib/utils'
+import ToolApproval from '@/containers/dialogs/ToolApproval'
 
 export const Route = createRootRoute({
   component: RootLayout,
@@ -92,6 +93,7 @@ function RootLayout() {
       {isLocalAPIServerLogsRoute ? <LogsLayout /> : <AppLayout />}
       {/* <TanStackRouterDevtools position="bottom-right" /> */}
       <CortexFailureDialog />
+      <ToolApproval />
     </Fragment>
   )
 }

web-app/src/routes/index.tsx

@@ -64,7 +64,11 @@ function Index() {
             </p>
           </div>
           <div className="flex-1 shrink-0">
-            <ChatInput showSpeedToken={false} model={selectedModel} />
+            <ChatInput
+              showSpeedToken={false}
+              model={selectedModel}
+              initialMessage={true}
+            />
           </div>
         </div>
       </div>

web-app/src/routes/settings/mcp-servers.tsx

@@ -18,6 +18,7 @@ import EditJsonMCPserver from '@/containers/dialogs/EditJsonMCPserver'
 import { Switch } from '@/components/ui/switch'
 import { twMerge } from 'tailwind-merge'
 import { getConnectedServers } from '@/services/mcp'
+import { useToolApproval } from '@/hooks/useToolApproval'
 
 // eslint-disable-next-line @typescript-eslint/no-explicit-any
 export const Route = createFileRoute(route.settings.mcp_servers as any)({
@@ -26,6 +27,8 @@ export const Route = createFileRoute(route.settings.mcp_servers as any)({
 
 function MCPServers() {
   const { mcpServers, addServer, editServer, deleteServer } = useMCPServers()
+  const { allowAllMCPPermissions, setAllowAllMCPPermissions } =
+    useToolApproval()
 
   const [open, setOpen] = useState(false)
   const [editingKey, setEditingKey] = useState<string | null>(null)
@@ -195,6 +198,35 @@ function MCPServers() {
                 </div>
               }
             />
+
+            {/* Global MCP Permission Toggle */}
+            <Card
+              header={
+                <div className="flex items-center justify-between">
+                  <div className="space-y-1">
+                    <h1 className="text-main-view-fg font-medium text-base">
+                      Allow All MCP Tool Permissions
+                    </h1>
+                    <p className="text-sm text-main-view-fg/70">
+                      When enabled, all MCP tool calls will be automatically
+                      approved without showing permission dialogs.
+                      <span className="font-semibold text-main-view-fg">
+                        {' '}
+                        Use with caution
+                      </span>{' '}
+                      - only enable this if you trust all your MCP servers.
+                    </p>
+                  </div>
+                  <div className="flex-shrink-0 ml-4">
+                    <Switch
+                      checked={allowAllMCPPermissions}
+                      onCheckedChange={setAllowAllMCPPermissions}
+                    />
+                  </div>
+                </div>
+              }
+            />
+
             {Object.keys(mcpServers).length === 0 ? (
               <div className="py-4 text-center font-medium text-main-view-fg/50">
                 No MCP servers found

web-app/src/styles/markdown.css

@@ -1,6 +1,16 @@
 .markdown {
   @apply text-inherit;
 
+  &.is-user {
+    p {
+      line-height: 1.6;
+      margin-bottom: 1em;
+      &:first-child {
+        margin-bottom: 0;
+      }
+    }
+  }
+
   /* Headings */
   :is(h1, h2, h3, h4, h5, h6) {
     font-weight: 600;
@@ -41,10 +51,6 @@
   p {
     line-height: 1.6;
     margin-bottom: 1em;
-
-    &:last-child {
-      margin-bottom: 0;
-    }
   }
 
   strong {
@@ -199,3 +205,6 @@
     margin: 2em 0;
   }
 }
+[data-tool-call-block] + [data-tool-call-block] {
+  margin-top: 16px;
+}