diff --git a/src/cli/ui/Wizard.tsx b/src/cli/ui/Wizard.tsx
index 9706f8b..5d6e301 100644
--- a/src/cli/ui/Wizard.tsx
+++ b/src/cli/ui/Wizard.tsx
@@ -549,6 +549,8 @@ function McpArgsStep({
 }) {
   const [value, setValue] = useState("");
   const [pendingCreate, setPendingCreate] = useState<string | null>(null);
+  const summary = mcpArgsSummaryFor(entry);
+  const note = mcpArgsNoteFor(entry);
 
   useInput((input, key) => {
     if (!pendingCreate) return;
@@ -597,10 +599,10 @@ function McpArgsStep({
   return (
     <StepFrame title={t("wizard.mcpArgsTitle", { name: entry.name })} step={2} total={3}>
       <Box flexDirection="column">
-        <Text>{entry.summary}</Text>
-        {entry.note ? (
+        <Text>{summary}</Text>
+        {note ? (
           <Box marginTop={1}>
-            <Text dimColor>{entry.note}</Text>
+            <Text dimColor>{note}</Text>
           </Box>
         ) : null}
         <Box marginTop={1}>
@@ -726,6 +728,16 @@ function mcpItems(): SelectItem<string>[] {
   });
 }
 
+export function mcpArgsSummaryFor(entry: CatalogEntry): string {
+  if (entry.name === "filesystem") return t("wizard.mcpArgsFilesystemSummary");
+  return entry.summary;
+}
+
+export function mcpArgsNoteFor(entry: CatalogEntry): string | undefined {
+  if (entry.name === "filesystem") return t("wizard.mcpArgsFilesystemNote");
+  return entry.note;
+}
+
 function placeholderFor(entry: CatalogEntry): string {
   if (entry.name === "filesystem") return "e.g. /tmp/carboncode-sandbox";
   if (entry.name === "sqlite") return "e.g. ./notes.sqlite";
diff --git a/src/i18n/EN.ts b/src/i18n/EN.ts
index 0ac9539..208c095 100644
--- a/src/i18n/EN.ts
+++ b/src/i18n/EN.ts
@@ -464,6 +464,8 @@ export const EN: TranslationSchema = {
     mcpArgsRequiredParam: "Required parameter: ",
     mcpArgsEmpty: "{name} needs a value — got an empty string.",
     mcpArgsNotADir: "{path} exists but is not a directory.",
+    mcpArgsFilesystemSummary: "read/write/search files inside a sandboxed directory",
+    mcpArgsFilesystemNote: "the directory is a hard sandbox — the server refuses access outside it",
     reviewTitle: "Ready to save",
     reviewLabelApiKey: "API key",
     reviewLabelLanguage: "Language",
diff --git a/src/i18n/types.ts b/src/i18n/types.ts
index 8282c0a..dd21386 100644
--- a/src/i18n/types.ts
+++ b/src/i18n/types.ts
@@ -301,6 +301,8 @@ export interface TranslationSchema {
     mcpArgsRequiredParam: string;
     mcpArgsEmpty: string;
     mcpArgsNotADir: string;
+    mcpArgsFilesystemSummary: string;
+    mcpArgsFilesystemNote: string;
     themeTitle: string;
     themeSubtitle: string;
     themeSampleHeading: string;
diff --git a/src/i18n/zh-CN.ts b/src/i18n/zh-CN.ts
index 7afc2e3..2c27a24 100644
--- a/src/i18n/zh-CN.ts
+++ b/src/i18n/zh-CN.ts
@@ -450,6 +450,8 @@ export const zhCN: TranslationSchema = {
     mcpArgsRequiredParam: "必填参数：",
     mcpArgsEmpty: "{name} 需要一个值 — 不能为空。",
     mcpArgsNotADir: "{path} 存在但不是目录。",
+    mcpArgsFilesystemSummary: "在沙盒目录内读写和搜索文件",
+    mcpArgsFilesystemNote: "该目录是严格沙盒，服务器会拒绝访问目录外的内容",
     reviewTitle: "确认保存",
     reviewLabelApiKey: "API key",
     reviewLabelLanguage: "语言",
diff --git a/tests/wizard.test.tsx b/tests/wizard.test.tsx
index 552e2b4..6783c17 100644
--- a/tests/wizard.test.tsx
+++ b/tests/wizard.test.tsx
@@ -3,7 +3,13 @@
 import { render } from "ink-testing-library";
 import React from "react";
 import { afterEach, describe, expect, it } from "vitest";
-import { Wizard, buildSpec, validateDeepSeekApiKey } from "../src/cli/ui/Wizard.js";
+import {
+  Wizard,
+  buildSpec,
+  mcpArgsNoteFor,
+  mcpArgsSummaryFor,
+  validateDeepSeekApiKey,
+} from "../src/cli/ui/Wizard.js";
 import { setLanguageRuntime } from "../src/i18n/index.js";
 import { parseMcpSpec } from "../src/mcp/spec.js";
 
@@ -66,6 +72,26 @@ describe("Wizard — first-launch language picker", () => {
   });
 });
 
+describe("Wizard — localized MCP argument copy", () => {
+  afterEach(() => {
+    setLanguageRuntime("EN");
+  });
+
+  it("localizes the filesystem argument step copy in zh-CN", () => {
+    setLanguageRuntime("zh-CN");
+    const entry = {
+      name: "filesystem",
+      summary: "read/write/search files inside a sandboxed directory",
+      package: "@modelcontextprotocol/server-filesystem",
+      userArgs: "<dir>",
+      note: "the directory is a hard sandbox — the server refuses access outside it",
+    };
+
+    expect(mcpArgsSummaryFor(entry)).toBe("在沙盒目录内读写和搜索文件");
+    expect(mcpArgsNoteFor(entry)).toBe("该目录是严格沙盒，服务器会拒绝访问目录外的内容");
+  });
+});
+
 describe("Wizard API-key validation", () => {
   it("accepts a key when DeepSeek auth check succeeds", async () => {
     const fetcher = async () => new Response(JSON.stringify({ data: [] }), { status: 200 });