ui: emphasize command palette button

package-lock.json

@@ -12092,7 +12092,8 @@
         "shiki": "^3.13.0",
         "solid-js": "^1.8.0",
         "solid-toast": "^0.5.0",
-        "tauri-plugin-keepawake-api": "^0.1.0"
+        "tauri-plugin-keepawake-api": "^0.1.0",
+        "yaml": "^2.4.2"
       },
       "devDependencies": {
         "@vite-pwa/assets-generator": "^1.0.2",

packages/ui/package.json

@@ -30,7 +30,8 @@
     "shiki": "^3.13.0",
     "solid-js": "^1.8.0",
     "solid-toast": "^0.5.0",
-    "tauri-plugin-keepawake-api": "^0.1.0"
+    "tauri-plugin-keepawake-api": "^0.1.0",
+    "yaml": "^2.4.2"
   },
   "devDependencies": {
     "@vite-pwa/assets-generator": "^1.0.2",

packages/ui/src/App.tsx

@@ -72,6 +72,7 @@ const App: Component = () => {
     setToolOutputExpansion,
     setDiagnosticsExpansion,
     setThinkingBlocksExpansion,
+    setToolInputsVisibility,
   } = useConfig()
   const [escapeInDebounce, setEscapeInDebounce] = createSignal(false)
   interface LaunchErrorState {
@@ -402,6 +403,7 @@ const App: Component = () => {
     setToolOutputExpansion,
     setDiagnosticsExpansion,
     setThinkingBlocksExpansion,
+    setToolInputsVisibility,
     handleNewInstanceRequest,
     handleCloseInstance,
     handleNewSession,

packages/ui/src/components/instance/instance-shell2.tsx

@@ -625,7 +625,7 @@ const InstanceShell2: Component<InstanceShellProps> = (props) => {
                     <div class="flex flex-wrap items-center justify-center gap-1">
                       <button
                         type="button"
-                        class="connection-status-button px-2 py-0.5 text-xs"
+                        class="connection-status-button command-palette-button px-2 py-0.5 text-xs"
                         onClick={handleCommandPaletteClick}
                         aria-label={t("instanceShell.commandPalette.openAriaLabel")}
                         style={{ flex: "0 0 auto", width: "auto" }}
@@ -721,7 +721,7 @@ const InstanceShell2: Component<InstanceShellProps> = (props) => {
               <div class="session-toolbar-center flex items-center justify-center gap-2 min-w-[160px]">
                 <button
                   type="button"
-                  class="connection-status-button px-2 py-0.5 text-xs"
+                  class="connection-status-button command-palette-button px-2 py-0.5 text-xs"
                   onClick={handleCommandPaletteClick}
                   aria-label={t("instanceShell.commandPalette.openAriaLabel")}
                   style={{ flex: "0 0 auto", width: "auto" }}

packages/ui/src/components/message-list-header.tsx

@@ -51,7 +51,7 @@ export default function MessageListHeader(props: MessageListHeaderProps) {
         <div class="connection-status-shortcut-action">
           <button
             type="button"
-            class="connection-status-button"
+            class="connection-status-button command-palette-button"
             onClick={props.onCommandPalette}
             aria-label={t("messageListHeader.commandPalette.ariaLabel")}
           >

packages/ui/src/components/tool-call.tsx

@@ -1,5 +1,6 @@
 import { createSignal, Show, createEffect, createMemo, onCleanup } from "solid-js"
-import { Copy } from "lucide-solid"
+import { ArrowRightSquare, Check, Copy, Hourglass, Loader2, XCircle } from "lucide-solid"
+import { stringify as stringifyYaml } from "yaml"
 import { messageStoreBus } from "../stores/message-v2/bus"
 import { useTheme } from "../lib/theme"
 import { useGlobalCache } from "../lib/hooks/use-global-cache"
@@ -27,7 +28,17 @@ import type {
   ToolRendererContext,
   ToolScrollHelpers,
 } from "./tool-call/types"
-import { getRelativePath, getToolIcon, getToolName, isToolStateCompleted, isToolStateError, isToolStateRunning, getDefaultToolAction } from "./tool-call/utils"
+import {
+  ensureMarkdownContent,
+  getRelativePath,
+  getToolIcon,
+  getToolName,
+  isToolStateCompleted,
+  isToolStateError,
+  isToolStateRunning,
+  getDefaultToolAction,
+  readToolStatePayload,
+} from "./tool-call/utils"
 import { resolveTitleForTool } from "./tool-call/tool-title"
 import { getLogger } from "../lib/logger"
 
@@ -155,12 +166,33 @@ export default function ToolCall(props: ToolCallProps) {
     const prefExpanded = toolOutputDefaultExpanded()
     const toolName = toolCallMemo()?.tool || ""
     if (toolName === "read") {
+      const state = toolState()
+      if (state?.status === "error") {
+        return true
+      }
       return false
     }
     return prefExpanded
   })
 
   const [userExpanded, setUserExpanded] = createSignal<boolean | null>(null)
+  const toolInputsVisibility = createMemo(() => preferences().toolInputsVisibility || "collapsed")
+  const [toolInputVisibilityOverride, setToolInputVisibilityOverride] = createSignal<"hidden" | "expanded" | null>(null)
+  const effectiveToolInputsVisibility = createMemo(() => toolInputVisibilityOverride() ?? toolInputsVisibility())
+  const isToolInputVisible = createMemo(() => effectiveToolInputsVisibility() !== "hidden")
+  const inputDefaultExpanded = createMemo(() => effectiveToolInputsVisibility() === "expanded")
+  const [inputSectionOverride, setInputSectionOverride] = createSignal<boolean | null>(null)
+  const [outputSectionOverride, setOutputSectionOverride] = createSignal<boolean | null>(null)
+  const inputSectionExpanded = () => {
+    const override = inputSectionOverride()
+    if (override !== null) return override
+    return inputDefaultExpanded()
+  }
+  const outputSectionExpanded = () => {
+    const override = outputSectionOverride()
+    if (override !== null) return override
+    return true
+  }
 
   const isPermissionActive = createMemo(() => {
     const pending = pendingPermission()
@@ -183,6 +215,35 @@ export default function ToolCall(props: ToolCallProps) {
     return defaultExpandedForTool()
   }
 
+  const toolInput = createMemo(() => {
+    const state = toolState()
+    return readToolStatePayload(state).input
+  })
+
+  const hasToolInput = createMemo(() => {
+    const input = toolInput()
+    return input && Object.keys(input).length > 0
+  })
+
+  const toolInputMarkdown = createMemo(() => {
+    const input = toolInput()
+    if (!input || Object.keys(input).length === 0) return null
+
+    try {
+      const yamlText = stringifyYaml(input)
+      return ensureMarkdownContent(yamlText, "yaml", true)
+    } catch (error) {
+      log.error("Failed to convert tool call input to YAML", error)
+      try {
+        const jsonText = JSON.stringify(input, null, 2)
+        return ensureMarkdownContent(jsonText, "json", true)
+      } catch (nestedError) {
+        log.error("Failed to stringify tool call input", nestedError)
+        return null
+      }
+    }
+  })
+
   const permissionDetails = createMemo(() => pendingPermission()?.permission)
   const questionDetails = createMemo(() => pendingQuestion()?.request)
 
@@ -515,13 +576,13 @@ export default function ToolCall(props: ToolCallProps) {
     const status = toolState()?.status || ""
     switch (status) {
       case "pending":
-        return "⏸"
+        return <Hourglass class="w-4 h-4" />
       case "running":
-        return "⏳"
+        return <Loader2 class="w-4 h-4 animate-spin" />
       case "completed":
-        return "✓"
+        return <Check class="w-4 h-4" />
       case "error":
-        return "✗"
+        return <XCircle class="w-4 h-4" />
       default:
         return ""
     }
@@ -548,6 +609,25 @@ export default function ToolCall(props: ToolCallProps) {
     })
   }
 
+  createEffect(() => {
+    // When global preference changes, reset per-tool-call overrides so palette changes apply.
+    toolInputsVisibility()
+    setToolInputVisibilityOverride(null)
+    setInputSectionOverride(null)
+    setOutputSectionOverride(null)
+  })
+
+  const handleToggleInputVisibility = (event: MouseEvent) => {
+    event.preventDefault()
+    event.stopPropagation()
+    if (!expanded()) {
+      toggle()
+    }
+
+    const currentlyVisible = isToolInputVisible()
+    setToolInputVisibilityOverride(currentlyVisible ? "hidden" : "expanded")
+  }
+
   const renderer = createMemo(() => resolveToolRenderer(toolName()))
 
   const { renderAnsiContent } = createAnsiContentRenderer({
@@ -789,6 +869,23 @@ export default function ToolCall(props: ToolCallProps) {
           </span>
         </button>
 
+        <Show when={hasToolInput()}>
+          <button
+            type="button"
+            class="tool-call-header-input"
+            onClick={handleToggleInputVisibility}
+            aria-pressed={isToolInputVisible()}
+            aria-label={
+              isToolInputVisible()
+                ? t("toolCall.header.hideInputAriaLabel")
+                : t("toolCall.header.showInputAriaLabel")
+            }
+            title={isToolInputVisible() ? t("toolCall.header.hideInputTitle") : t("toolCall.header.showInputTitle")}
+          >
+            <ArrowRightSquare class="w-3.5 h-3.5" />
+          </button>
+        </Show>
+
         <button
           type="button"
           class="tool-call-header-copy"
@@ -806,19 +903,79 @@ export default function ToolCall(props: ToolCallProps) {
 
       {expanded() && (
         <div class="tool-call-details">
-          {renderToolBody()}
- 
-          {renderError()}
- 
-          {renderPermissionBlock()}
-          {renderQuestionBlock()}
- 
-          <Show when={status() === "pending" && !pendingPermission()}>
-            <div class="tool-call-pending-message">
-              <span class="spinner-small"></span>
-              <span>{t("toolCall.pending.waitingToRun")}</span>
+          <Show
+            when={isToolInputVisible() && hasToolInput()}
+            fallback={
+              <>
+                {renderToolBody()}
+                {renderError()}
+
+                <Show when={status() === "pending" && !pendingPermission()}>
+                  <div class="tool-call-pending-message">
+                    <span class="spinner-small"></span>
+                    <span>{t("toolCall.pending.waitingToRun")}</span>
+                  </div>
+                </Show>
+              </>
+            }
+          >
+            <div class="tool-call-io-sections">
+              <div class="tool-call-io-section">
+                <button
+                  type="button"
+                  class="tool-call-io-toggle"
+                  aria-expanded={inputSectionExpanded()}
+                  onClick={() => setInputSectionOverride((prev) => {
+                    const current = prev === null ? inputSectionExpanded() : prev
+                    return !current
+                  })}
+                >
+                  <span class="tool-call-io-title">{t("toolCall.io.input")}</span>
+                </button>
+
+                <Show when={inputSectionExpanded()}>
+                  <div class="tool-call-io-body">
+                    {(() => {
+                      const content = toolInputMarkdown()
+                      if (!content) return null
+                      return renderMarkdownContent({ content, cacheKey: "input" })
+                    })()}
+                  </div>
+                </Show>
+              </div>
+
+              <div class="tool-call-io-section">
+                <button
+                  type="button"
+                  class="tool-call-io-toggle"
+                  aria-expanded={outputSectionExpanded()}
+                  onClick={() => setOutputSectionOverride((prev) => {
+                    const current = prev === null ? outputSectionExpanded() : prev
+                    return !current
+                  })}
+                >
+                  <span class="tool-call-io-title">{t("toolCall.io.output")}</span>
+                </button>
+
+                <Show when={outputSectionExpanded()}>
+                  <div class="tool-call-io-body">
+                    {renderToolBody()}
+                    {renderError()}
+
+                    <Show when={status() === "pending" && !pendingPermission()}>
+                      <div class="tool-call-pending-message">
+                        <span class="spinner-small"></span>
+                        <span>{t("toolCall.pending.waitingToRun")}</span>
+                      </div>
+                    </Show>
+                  </div>
+                </Show>
+              </div>
             </div>
           </Show>
+
+          {renderPermissionBlock()}
+          {renderQuestionBlock()}
         </div>
       )}
  

packages/ui/src/lib/hooks/use-commands.ts

@@ -1,6 +1,6 @@
 import { createSignal, onMount } from "solid-js"
 import type { Accessor } from "solid-js"
-import type { Preferences, ExpansionPreference } from "../../stores/preferences"
+import type { Preferences, ExpansionPreference, ToolInputsVisibilityPreference } from "../../stores/preferences"
 import { createCommandRegistry, type Command } from "../commands"
 import { instances, activeInstanceId, setActiveInstanceId } from "../../stores/instances"
 import type { ClientPart, MessageInfo } from "../../types/message"
@@ -38,6 +38,7 @@ export interface UseCommandsOptions {
   setToolOutputExpansion: (mode: ExpansionPreference) => void
   setDiagnosticsExpansion: (mode: ExpansionPreference) => void
   setThinkingBlocksExpansion: (mode: ExpansionPreference) => void
+  setToolInputsVisibility: (mode: ToolInputsVisibilityPreference) => void
   handleNewInstanceRequest: () => void
   handleCloseInstance: (instanceId: string) => Promise<void>
   handleNewSession: (instanceId: string) => Promise<void>
@@ -551,6 +552,29 @@ export function useCommands(options: UseCommandsOptions) {
       },
     })
 
+    commandRegistry.register({
+      id: "tool-inputs-visibility",
+      label: () => {
+        const mode = options.preferences().toolInputsVisibility || "hidden"
+        const state =
+          mode === "expanded"
+            ? tGlobal("commands.common.expanded")
+            : mode === "collapsed"
+              ? tGlobal("commands.common.collapsed")
+              : tGlobal("commands.common.hidden")
+        return tGlobal("commands.toolInputsVisibility.label", { state })
+      },
+      description: () => tGlobal("commands.toolInputsVisibility.description"),
+      category: "System",
+      keywords: () => splitKeywords("commands.toolInputsVisibility.keywords"),
+      action: () => {
+        const mode = options.preferences().toolInputsVisibility || "hidden"
+        const next: ToolInputsVisibilityPreference =
+          mode === "hidden" ? "collapsed" : mode === "collapsed" ? "expanded" : "hidden"
+        options.setToolInputsVisibility(next)
+      },
+    })
+
     commandRegistry.register({
       id: "token-usage-visibility",
       label: () => {

packages/ui/src/lib/i18n/messages/en/commands.ts

@@ -130,6 +130,10 @@ export const commandMessages = {
   "commands.diagnosticsDefault.description": "Toggle default expansion for diagnostics output",
   "commands.diagnosticsDefault.keywords": "diagnostics, expand, collapse",
 
+  "commands.toolInputsVisibility.label": "Tool Inputs Visibility · {state}",
+  "commands.toolInputsVisibility.description": "Set default visibility for tool call input arguments",
+  "commands.toolInputsVisibility.keywords": "tool, inputs, arguments, visibility, hide, show, expand, collapse",
+
   "commands.tokenUsageDisplay.label": "Token Usage Display · {state}",
   "commands.tokenUsageDisplay.description": "Show or hide token and cost stats for assistant messages",
   "commands.tokenUsageDisplay.keywords": "token, usage, cost, stats",

packages/ui/src/lib/i18n/messages/en/toolCall.ts

@@ -5,6 +5,14 @@ export const toolCallMessages = {
   "toolCall.header.copyTitle": "Copy tool call title",
   "toolCall.header.copyAriaLabel": "Copy tool call title",
 
+  "toolCall.header.showInputTitle": "Show Tool Arguments",
+  "toolCall.header.showInputAriaLabel": "Show Tool Arguments",
+  "toolCall.header.hideInputTitle": "Hide Tool Arguments",
+  "toolCall.header.hideInputAriaLabel": "Hide Tool Arguments",
+
+  "toolCall.io.input": "Tool Input",
+  "toolCall.io.output": "Tool Output",
+
   "toolCall.diff.label": "Diff",
   "toolCall.diff.label.withPath": "Diff · {path}",
   "toolCall.diff.viewMode.ariaLabel": "Diff view mode",

packages/ui/src/lib/i18n/messages/es/commands.ts

@@ -130,6 +130,10 @@ export const commandMessages = {
   "commands.diagnosticsDefault.description": "Alternar la expansión por defecto de la salida de diagnósticos",
   "commands.diagnosticsDefault.keywords": "diagnósticos, expandir, colapsar",
 
+  "commands.toolInputsVisibility.label": "Visibilidad de entradas de herramientas · {state}",
+  "commands.toolInputsVisibility.description": "Configurar la visibilidad por defecto de los argumentos de entrada de llamadas de herramienta",
+  "commands.toolInputsVisibility.keywords": "herramienta, entradas, argumentos, visibilidad, ocultar, mostrar, expandir, colapsar",
+
   "commands.tokenUsageDisplay.label": "Mostrar uso de tokens · {state}",
   "commands.tokenUsageDisplay.description": "Mostrar u ocultar estadísticas de tokens y costo en los mensajes del asistente",
   "commands.tokenUsageDisplay.keywords": "token, uso, costo, estadísticas",

packages/ui/src/lib/i18n/messages/es/toolCall.ts

@@ -5,6 +5,14 @@ export const toolCallMessages = {
   "toolCall.header.copyTitle": "Copy tool call title",
   "toolCall.header.copyAriaLabel": "Copy tool call title",
 
+  "toolCall.header.showInputTitle": "Show Tool Arguments",
+  "toolCall.header.showInputAriaLabel": "Show Tool Arguments",
+  "toolCall.header.hideInputTitle": "Hide Tool Arguments",
+  "toolCall.header.hideInputAriaLabel": "Hide Tool Arguments",
+
+  "toolCall.io.input": "Tool Input",
+  "toolCall.io.output": "Tool Output",
+
   "toolCall.diff.label": "Diff",
   "toolCall.diff.label.withPath": "Diff · {path}",
   "toolCall.diff.viewMode.ariaLabel": "Modo de vista de diff",

packages/ui/src/lib/i18n/messages/fr/commands.ts

@@ -130,6 +130,10 @@ export const commandMessages = {
   "commands.diagnosticsDefault.description": "Choisir l'ouverture par défaut de la sortie des diagnostics",
   "commands.diagnosticsDefault.keywords": "diagnostics, développer, réduire",
 
+  "commands.toolInputsVisibility.label": "Visibilité des entrées d'outil · {state}",
+  "commands.toolInputsVisibility.description": "Définir la visibilité par défaut des arguments d'entrée des appels d'outil",
+  "commands.toolInputsVisibility.keywords": "outil, entrées, arguments, visibilité, masquer, afficher, développer, réduire",
+
   "commands.tokenUsageDisplay.label": "Affichage de l'usage des tokens · {state}",
   "commands.tokenUsageDisplay.description": "Afficher ou masquer les stats de tokens et de coût pour les messages de l'assistant",
   "commands.tokenUsageDisplay.keywords": "token, usage, coût, stats",

packages/ui/src/lib/i18n/messages/fr/toolCall.ts

@@ -5,6 +5,14 @@ export const toolCallMessages = {
   "toolCall.header.copyTitle": "Copy tool call title",
   "toolCall.header.copyAriaLabel": "Copy tool call title",
 
+  "toolCall.header.showInputTitle": "Show Tool Arguments",
+  "toolCall.header.showInputAriaLabel": "Show Tool Arguments",
+  "toolCall.header.hideInputTitle": "Hide Tool Arguments",
+  "toolCall.header.hideInputAriaLabel": "Hide Tool Arguments",
+
+  "toolCall.io.input": "Tool Input",
+  "toolCall.io.output": "Tool Output",
+
   "toolCall.diff.label": "Diff",
   "toolCall.diff.label.withPath": "Diff · {path}",
   "toolCall.diff.viewMode.ariaLabel": "Mode d'affichage du diff",

packages/ui/src/lib/i18n/messages/ja/commands.ts

@@ -130,6 +130,10 @@ export const commandMessages = {
   "commands.diagnosticsDefault.description": "診断出力を既定で展開するか切り替え",
   "commands.diagnosticsDefault.keywords": "診断, 展開, 折りたたみ, diagnostics, expand, collapse",
 
+  "commands.toolInputsVisibility.label": "ツール入力の表示 · {state}",
+  "commands.toolInputsVisibility.description": "ツール呼び出しの入力引数の既定の表示状態を設定します",
+  "commands.toolInputsVisibility.keywords": "ツール, 入力, 引数, 表示, 非表示, 展開, 折りたたみ, tool, inputs, arguments, visibility, hide, show, expand, collapse",
+
   "commands.tokenUsageDisplay.label": "トークン使用量表示 · {state}",
   "commands.tokenUsageDisplay.description": "アシスタントメッセージのトークン/コスト統計を表示/非表示",
   "commands.tokenUsageDisplay.keywords": "トークン, 使用量, コスト, 統計, token, usage, cost, stats",

packages/ui/src/lib/i18n/messages/ja/toolCall.ts

@@ -5,6 +5,14 @@ export const toolCallMessages = {
   "toolCall.header.copyTitle": "Copy tool call title",
   "toolCall.header.copyAriaLabel": "Copy tool call title",
 
+  "toolCall.header.showInputTitle": "Show Tool Arguments",
+  "toolCall.header.showInputAriaLabel": "Show Tool Arguments",
+  "toolCall.header.hideInputTitle": "Hide Tool Arguments",
+  "toolCall.header.hideInputAriaLabel": "Hide Tool Arguments",
+
+  "toolCall.io.input": "Tool Input",
+  "toolCall.io.output": "Tool Output",
+
   "toolCall.diff.label": "Diff",
   "toolCall.diff.label.withPath": "Diff · {path}",
   "toolCall.diff.viewMode.ariaLabel": "diff 表示モード",

packages/ui/src/lib/i18n/messages/ru/commands.ts

@@ -130,6 +130,10 @@ export const commandMessages = {
   "commands.diagnosticsDefault.description": "Переключить, разворачивать ли вывод диагностики по умолчанию",
   "commands.diagnosticsDefault.keywords": "diagnostics, развернуть, свернуть",
 
+  "commands.toolInputsVisibility.label": "Видимость входных данных инструмента · {state}",
+  "commands.toolInputsVisibility.description": "Установить видимость аргументов входа вызовов инструментов по умолчанию",
+  "commands.toolInputsVisibility.keywords": "инструмент, вход, аргументы, видимость, скрыть, показать, раскрыть, свернуть, tool, inputs, arguments, visibility, hide, show, expand, collapse",
+
   "commands.tokenUsageDisplay.label": "Отображение token-статистики · {state}",
   "commands.tokenUsageDisplay.description": "Показать или скрыть статистику token и стоимости для сообщений ассистента",
   "commands.tokenUsageDisplay.keywords": "token, usage, cost, статистика",

packages/ui/src/lib/i18n/messages/ru/toolCall.ts

@@ -5,6 +5,14 @@ export const toolCallMessages = {
   "toolCall.header.copyTitle": "Copy tool call title",
   "toolCall.header.copyAriaLabel": "Copy tool call title",
 
+  "toolCall.header.showInputTitle": "Show Tool Arguments",
+  "toolCall.header.showInputAriaLabel": "Show Tool Arguments",
+  "toolCall.header.hideInputTitle": "Hide Tool Arguments",
+  "toolCall.header.hideInputAriaLabel": "Hide Tool Arguments",
+
+  "toolCall.io.input": "Tool Input",
+  "toolCall.io.output": "Tool Output",
+
   "toolCall.diff.label": "Diff",
   "toolCall.diff.label.withPath": "Diff · {path}",
   "toolCall.diff.viewMode.ariaLabel": "Режим просмотра diff",

packages/ui/src/lib/i18n/messages/zh-Hans/commands.ts

@@ -130,6 +130,10 @@ export const commandMessages = {
   "commands.diagnosticsDefault.description": "切换诊断输出是否默认展开",
   "commands.diagnosticsDefault.keywords": "diagnostics, expand, collapse, 诊断, 展开, 折叠",
 
+  "commands.toolInputsVisibility.label": "工具输入可见性 · {state}",
+  "commands.toolInputsVisibility.description": "设置工具调用输入参数的默认可见性",
+  "commands.toolInputsVisibility.keywords": "工具, 输入, 参数, 可见性, 隐藏, 显示, 展开, 折叠, tool, inputs, arguments, visibility, hide, show, expand, collapse",
+
   "commands.tokenUsageDisplay.label": "Token 使用显示 · {state}",
   "commands.tokenUsageDisplay.description": "显示或隐藏助手消息的 token 和费用统计",
   "commands.tokenUsageDisplay.keywords": "token, usage, cost, stats, 令牌, 用量, 费用, 统计",

packages/ui/src/lib/i18n/messages/zh-Hans/toolCall.ts

@@ -5,6 +5,14 @@ export const toolCallMessages = {
   "toolCall.header.copyTitle": "Copy tool call title",
   "toolCall.header.copyAriaLabel": "Copy tool call title",
 
+  "toolCall.header.showInputTitle": "Show Tool Arguments",
+  "toolCall.header.showInputAriaLabel": "Show Tool Arguments",
+  "toolCall.header.hideInputTitle": "Hide Tool Arguments",
+  "toolCall.header.hideInputAriaLabel": "Hide Tool Arguments",
+
+  "toolCall.io.input": "Tool Input",
+  "toolCall.io.output": "Tool Output",
+
   "toolCall.diff.label": "Diff",
   "toolCall.diff.label.withPath": "Diff · {path}",
   "toolCall.diff.viewMode.ariaLabel": "Diff 视图模式",

packages/ui/src/stores/preferences.tsx

@@ -25,6 +25,7 @@ export interface ModelPreference {
 
 export type DiffViewMode = "split" | "unified"
 export type ExpansionPreference = "expanded" | "collapsed"
+export type ToolInputsVisibilityPreference = "hidden" | "collapsed" | "expanded"
 export type ListeningMode = "local" | "all"
 
 export interface UiSettings {
@@ -37,6 +38,7 @@ export interface UiSettings {
   diffViewMode: DiffViewMode
   toolOutputExpansion: ExpansionPreference
   diagnosticsExpansion: ExpansionPreference
+  toolInputsVisibility: ToolInputsVisibilityPreference
   showUsageMetrics: boolean
   autoCleanupBlankSessions: boolean
 
@@ -108,6 +110,7 @@ const defaultUiSettings: UiSettings = {
   diffViewMode: "split",
   toolOutputExpansion: "expanded",
   diagnosticsExpansion: "expanded",
+  toolInputsVisibility: "collapsed",
   showUsageMetrics: true,
   autoCleanupBlankSessions: true,
 
@@ -130,6 +133,10 @@ function normalizeUiSettings(input?: Partial<UiSettings> | null): UiSettings {
     diffViewMode: sanitized.diffViewMode ?? defaultUiSettings.diffViewMode,
     toolOutputExpansion: sanitized.toolOutputExpansion ?? defaultUiSettings.toolOutputExpansion,
     diagnosticsExpansion: sanitized.diagnosticsExpansion ?? defaultUiSettings.diagnosticsExpansion,
+    toolInputsVisibility:
+      sanitized.toolInputsVisibility === "hidden" || sanitized.toolInputsVisibility === "collapsed" || sanitized.toolInputsVisibility === "expanded"
+        ? sanitized.toolInputsVisibility
+        : defaultUiSettings.toolInputsVisibility,
     showUsageMetrics: sanitized.showUsageMetrics ?? defaultUiSettings.showUsageMetrics,
     autoCleanupBlankSessions: sanitized.autoCleanupBlankSessions ?? defaultUiSettings.autoCleanupBlankSessions,
     osNotificationsEnabled: sanitized.osNotificationsEnabled ?? defaultUiSettings.osNotificationsEnabled,
@@ -439,6 +446,11 @@ function setDiagnosticsExpansion(mode: ExpansionPreference): void {
   updateUiSettings({ diagnosticsExpansion: mode })
 }
 
+function setToolInputsVisibility(mode: ToolInputsVisibilityPreference): void {
+  if (preferences().toolInputsVisibility === mode) return
+  updateUiSettings({ toolInputsVisibility: mode })
+}
+
 function setThinkingBlocksExpansion(mode: ExpansionPreference): void {
   if (preferences().thinkingBlocksExpansion === mode) return
   updateUiSettings({ thinkingBlocksExpansion: mode })
@@ -536,6 +548,7 @@ interface ConfigContextValue {
   setToolOutputExpansion: typeof setToolOutputExpansion
   setDiagnosticsExpansion: typeof setDiagnosticsExpansion
   setThinkingBlocksExpansion: typeof setThinkingBlocksExpansion
+  setToolInputsVisibility: typeof setToolInputsVisibility
 
   // instance scoped
   setAgentModelPreference: typeof setAgentModelPreference
@@ -579,6 +592,7 @@ const configContextValue: ConfigContextValue = {
   setToolOutputExpansion,
   setDiagnosticsExpansion,
   setThinkingBlocksExpansion,
+  setToolInputsVisibility,
   setAgentModelPreference,
   getAgentModelPreference,
 }

packages/ui/src/styles/messaging/message-section.css

@@ -130,6 +130,17 @@
   color: var(--text-primary);
 }
 
+/* Make the command palette trigger stand out in the header. */
+.connection-status-button.command-palette-button {
+  border-color: var(--accent-primary);
+  background-color: var(--surface-secondary);
+}
+
+.connection-status-button.command-palette-button:hover {
+  border-color: var(--accent-primary);
+  background-color: var(--surface-hover);
+}
+
 .connection-status-button:hover {
   background-color: var(--surface-hover);
 }

packages/ui/src/styles/messaging/tool-call.css

@@ -87,6 +87,7 @@
   @apply flex items-stretch w-full;
   background-color: transparent;
   color: var(--text-primary);
+  border-bottom: 1px solid var(--tool-call-border-color);
 }
 
 .tool-call-header:hover {
@@ -127,11 +128,30 @@
   cursor: pointer;
 }
 
+.tool-call-header-input {
+  @apply inline-flex items-center justify-center;
+  background-color: transparent;
+  border: none;
+  color: var(--text-secondary);
+  padding: 0 0.5rem;
+  border-radius: 0;
+  cursor: pointer;
+}
+
 .tool-call-header-copy:hover {
   background-color: transparent;
   color: var(--text-primary);
 }
 
+.tool-call-header-input:hover {
+  background-color: transparent;
+  color: var(--text-primary);
+}
+
+.tool-call-header-input[aria-pressed="true"] {
+  color: var(--text-primary);
+}
+
 .tool-call-header-status {
   @apply inline-flex items-center justify-center;
   font-size: 0.95rem;
@@ -213,6 +233,63 @@
   font-size: var(--font-size-xs);
 }
 
+
+.tool-call-io-sections {
+  display: flex;
+  flex-direction: column;
+  gap: var(--space-xs);
+  padding: 0;
+}
+
+.tool-call-io-section {
+  border: 1px solid var(--tool-call-border-color);
+  overflow: hidden;
+  background-color: transparent;
+  border-radius: 0;
+}
+
+.tool-call-io-toggle {
+  display: flex;
+  align-items: center;
+  justify-content: flex-start;
+  gap: 0.75rem;
+  padding: 0.5rem;
+  background-color: var(--surface-secondary);
+  border: none;
+  border-bottom: 1px solid var(--tool-call-border-color);
+  width: 100%;
+  text-align: left;
+  font-size: 0.875rem;
+  font-weight: normal;
+  color: var(--text-primary);
+  cursor: pointer;
+}
+
+.tool-call-io-toggle::before {
+  content: "▶";
+  font-size: 11px;
+  margin-right: 0.35rem;
+  color: var(--text-secondary);
+}
+
+.tool-call-io-toggle[aria-expanded="true"]::before {
+  content: "▼";
+}
+
+.tool-call-io-title {
+  font-weight: inherit;
+  color: inherit;
+}
+
+.tool-call-io-body {
+  background-color: var(--surface-code);
+}
+
+/* IO sections provide the outer frame; avoid double borders on markdown frames. */
+.tool-call-io-body .tool-call-markdown {
+  border: none;
+}
+
 .tool-call-markdown {
   background-color: var(--surface-code);
   /* Keep a visible frame around the scroll viewport (not the content). */