diff --git a/web/frontend/src/components/config/config-page.tsx b/web/frontend/src/components/config/config-page.tsx
index ee24aafaa..24a719d86 100644
--- a/web/frontend/src/components/config/config-page.tsx
+++ b/web/frontend/src/components/config/config-page.tsx
@@ -155,6 +155,11 @@ export function ConfigPage() {
           "Max tool iterations",
           { min: 1 },
         )
+        const toolFeedbackMaxArgsLength = parseIntField(
+          form.toolFeedbackMaxArgsLength,
+          "Tool feedback max args length",
+          { min: 0 },
+        )
         const summarizeMessageThreshold = parseIntField(
           form.summarizeMessageThreshold,
           "Summarize message threshold",
@@ -203,6 +208,10 @@ export function ConfigPage() {
             defaults: {
               workspace,
               restrict_to_workspace: form.restrictToWorkspace,
+              tool_feedback: {
+                enabled: form.toolFeedbackEnabled,
+                max_args_length: toolFeedbackMaxArgsLength,
+              },
               max_tokens: maxTokens,
               context_window: contextWindow,
               max_tool_iterations: maxToolIterations,
diff --git a/web/frontend/src/components/config/config-sections.tsx b/web/frontend/src/components/config/config-sections.tsx
index d938a93d4..5482b0a35 100644
--- a/web/frontend/src/components/config/config-sections.tsx
+++ b/web/frontend/src/components/config/config-sections.tsx
@@ -93,6 +93,33 @@ export function AgentDefaultsSection({
         }
       />
 
+      <SwitchCardField
+        label={t("pages.config.tool_feedback_enabled")}
+        hint={t("pages.config.tool_feedback_enabled_hint")}
+        layout="setting-row"
+        checked={form.toolFeedbackEnabled}
+        onCheckedChange={(checked) =>
+          onFieldChange("toolFeedbackEnabled", checked)
+        }
+      />
+
+      {form.toolFeedbackEnabled && (
+        <Field
+          label={t("pages.config.tool_feedback_max_args_length")}
+          hint={t("pages.config.tool_feedback_max_args_length_hint")}
+          layout="setting-row"
+        >
+          <Input
+            type="number"
+            min={0}
+            value={form.toolFeedbackMaxArgsLength}
+            onChange={(e) =>
+              onFieldChange("toolFeedbackMaxArgsLength", e.target.value)
+            }
+          />
+        </Field>
+      )}
+
       <Field
         label={t("pages.config.max_tokens")}
         hint={t("pages.config.max_tokens_hint")}
diff --git a/web/frontend/src/components/config/form-model.ts b/web/frontend/src/components/config/form-model.ts
index dc4764e21..abbb6d154 100644
--- a/web/frontend/src/components/config/form-model.ts
+++ b/web/frontend/src/components/config/form-model.ts
@@ -3,6 +3,8 @@ export type JsonRecord = Record<string, unknown>
 export interface CoreConfigForm {
   workspace: string
   restrictToWorkspace: boolean
+  toolFeedbackEnabled: boolean
+  toolFeedbackMaxArgsLength: string
   execEnabled: boolean
   allowRemote: boolean
   enableDenyPatterns: boolean
@@ -63,6 +65,8 @@ export const DM_SCOPE_OPTIONS = [
 export const EMPTY_FORM: CoreConfigForm = {
   workspace: "",
   restrictToWorkspace: true,
+  toolFeedbackEnabled: true,
+  toolFeedbackMaxArgsLength: "300",
   execEnabled: true,
   allowRemote: true,
   enableDenyPatterns: true,
@@ -124,6 +128,7 @@ export function buildFormFromConfig(config: unknown): CoreConfigForm {
   const tools = asRecord(root.tools)
   const cron = asRecord(tools.cron)
   const exec = asRecord(tools.exec)
+  const toolFeedback = asRecord(defaults.tool_feedback)
 
   return {
     workspace: asString(defaults.workspace) || EMPTY_FORM.workspace,
@@ -131,6 +136,14 @@ export function buildFormFromConfig(config: unknown): CoreConfigForm {
       defaults.restrict_to_workspace === undefined
         ? EMPTY_FORM.restrictToWorkspace
         : asBool(defaults.restrict_to_workspace),
+    toolFeedbackEnabled:
+      toolFeedback.enabled === undefined
+        ? EMPTY_FORM.toolFeedbackEnabled
+        : asBool(toolFeedback.enabled),
+    toolFeedbackMaxArgsLength: asNumberString(
+      toolFeedback.max_args_length,
+      EMPTY_FORM.toolFeedbackMaxArgsLength,
+    ),
     execEnabled:
       exec.enabled === undefined
         ? EMPTY_FORM.execEnabled
diff --git a/web/frontend/src/i18n/locales/en.json b/web/frontend/src/i18n/locales/en.json
index 0ff2beb25..66e39ad0e 100644
--- a/web/frontend/src/i18n/locales/en.json
+++ b/web/frontend/src/i18n/locales/en.json
@@ -396,6 +396,10 @@
       "workspace_hint": "Base directory for agent file operations.",
       "restrict_workspace": "Restrict to Workspace",
       "restrict_workspace_hint": "Only allow file operations inside workspace.",
+      "tool_feedback_enabled": "Tool Feedback",
+      "tool_feedback_enabled_hint": "Send a short tool-call preview into the current chat before each tool execution.",
+      "tool_feedback_max_args_length": "Tool Feedback Args Preview Length",
+      "tool_feedback_max_args_length_hint": "Maximum number of argument characters shown in each tool feedback message. Set to 0 to use the default.",
       "exec_enabled": "Allow Commands",
       "exec_enabled_hint": "Enable or disable command execution for the app. When disabled, no command requests will run.",
       "allow_remote": "Allow Remote Commands",
diff --git a/web/frontend/src/i18n/locales/zh.json b/web/frontend/src/i18n/locales/zh.json
index fc1f007ae..65f2a5548 100644
--- a/web/frontend/src/i18n/locales/zh.json
+++ b/web/frontend/src/i18n/locales/zh.json
@@ -396,6 +396,10 @@
       "workspace_hint": "智能体执行文件读写操作时使用的基础目录。",
       "restrict_workspace": "限制工作目录访问",
       "restrict_workspace_hint": "仅允许在工作目录内执行文件操作。",
+      "tool_feedback_enabled": "工具反馈",
+      "tool_feedback_enabled_hint": "在每次执行工具前，先向当前会话发送一条简短的工具调用预览。",
+      "tool_feedback_max_args_length": "工具反馈参数预览长度",
+      "tool_feedback_max_args_length_hint": "每条工具反馈消息中展示的参数字符上限。设为 0 时使用默认值。",
       "exec_enabled": "允许命令执行",
       "exec_enabled_hint": "控制应用是否允许执行命令。关闭后，所有命令请求都不会执行。",
       "allow_remote": "允许远程命令执行",