diff --git a/frontend/src/components/AIChatPanel.message-boundary.test.tsx b/frontend/src/components/AIChatPanel.message-boundary.test.tsx
index 21e35be..556cfcd 100644
--- a/frontend/src/components/AIChatPanel.message-boundary.test.tsx
+++ b/frontend/src/components/AIChatPanel.message-boundary.test.tsx
@@ -28,6 +28,13 @@ describe('AIChatPanel message render isolation', () => {
     expect(source).toContain('buildAvailableAIChatTools');
   });
 
+  it('teaches the runtime to use deeper schema tools when analyzing structure details', () => {
+    expect(source).toContain('get_indexes、get_foreign_keys、get_triggers、get_table_ddl');
+    expect(source).toContain("case 'get_indexes':");
+    expect(source).toContain("case 'get_foreign_keys':");
+    expect(source).toContain("case 'get_triggers':");
+  });
+
   it('keeps the v2 history mode sorted by the latest updated session first', () => {
     expect(source).toContain('const orderedAISessions = useMemo(');
     expect(source).toContain('right.updatedAt - left.updatedAt');
diff --git a/frontend/src/components/AIChatPanel.tsx b/frontend/src/components/AIChatPanel.tsx
index 9f94f9f..5a9bd72 100644
--- a/frontend/src/components/AIChatPanel.tsx
+++ b/frontend/src/components/AIChatPanel.tsx
@@ -1207,10 +1207,11 @@ ${resourcePath ? `当前资源路径：${resourcePath}` : '当前未选中具体
 
 SQL 生成规则（极重要，必须严格遵守）：
 7. 【字段精确性 - 绝对红线】生成 SQL 之前，必须先调用 get_columns 获取目标表的真实字段列表。SQL 中的每一个字段名必须与 get_columns 返回的 field 字段完全一致（区分大小写）。不得自行拼凑、缩写或联想字段名（例如字段是 channel 就必须写 channel，不得写成 pay_channel）。
-8. 生成 SQL 时禁止使用 "database.table" 格式的限定前缀，只写表名本身。
-9. 报告结果时，连接名/ID 和数据库名必须严格来自同一个 get_tables 调用的实际参数。禁止将 A 连接的 connectionId 与 B 连接的 dbName 混搭。
-10. 如果有多个名称相似的数据库，请明确告诉用户目标表具体位于哪个数据库。
-11. 【关键】每个 SQL 代码块的第一行必须添加上下文声明注释，格式严格为：-- @context connectionId=<连接ID> dbName=<数据库名>。connectionId 和 dbName 必须来自同一个成功的 get_tables 调用（即你在该调用中传入的实际参数值）。示例：
+8. 如果用户在问索引优化、联表关系、触发器副作用、约束或 DDL 细节，在 get_columns 之后继续按需调用 get_indexes、get_foreign_keys、get_triggers、get_table_ddl，再给结论。
+9. 生成 SQL 时禁止使用 "database.table" 格式的限定前缀，只写表名本身。
+10. 报告结果时，连接名/ID 和数据库名必须严格来自同一个 get_tables 调用的实际参数。禁止将 A 连接的 connectionId 与 B 连接的 dbName 混搭。
+11. 如果有多个名称相似的数据库，请明确告诉用户目标表具体位于哪个数据库。
+12. 【关键】每个 SQL 代码块的第一行必须添加上下文声明注释，格式严格为：-- @context connectionId=<连接ID> dbName=<数据库名>。connectionId 和 dbName 必须来自同一个成功的 get_tables 调用（即你在该调用中传入的实际参数值）。示例：
 \`\`\`sql
 -- @context connectionId=1770778676549 dbName=mkefu_test
 SELECT * FROM users WHERE status = 1;
@@ -1346,6 +1347,60 @@ SELECT * FROM users WHERE status = 1;
                         } else { resStr = 'Connection not found'; }
                         break;
                     }
+                    case 'get_indexes': {
+                        const conn = useStore.getState().connections.find(c => c.id === args.connectionId);
+                        if (conn) {
+                            try {
+                                const safeDbName = args.dbName ? String(args.dbName).trim() : '';
+                                const safeTable = args.tableName ? String(args.tableName).trim() : '';
+                                const { DBGetIndexes } = await import('../../wailsjs/go/app/App');
+                                const indexRes = await DBGetIndexes(buildRpcConnectionConfig(conn.config) as any, safeDbName, safeTable);
+                                if (indexRes?.success && Array.isArray(indexRes.data)) {
+                                    resStr = JSON.stringify(indexRes.data);
+                                    success = true;
+                                } else { resStr = indexRes?.message || 'Failed to fetch indexes'; }
+                            } catch (e: any) {
+                                resStr = `获取索引定义失败: ${e?.message || e}`;
+                            }
+                        } else { resStr = 'Connection not found'; }
+                        break;
+                    }
+                    case 'get_foreign_keys': {
+                        const conn = useStore.getState().connections.find(c => c.id === args.connectionId);
+                        if (conn) {
+                            try {
+                                const safeDbName = args.dbName ? String(args.dbName).trim() : '';
+                                const safeTable = args.tableName ? String(args.tableName).trim() : '';
+                                const { DBGetForeignKeys } = await import('../../wailsjs/go/app/App');
+                                const foreignKeyRes = await DBGetForeignKeys(buildRpcConnectionConfig(conn.config) as any, safeDbName, safeTable);
+                                if (foreignKeyRes?.success && Array.isArray(foreignKeyRes.data)) {
+                                    resStr = JSON.stringify(foreignKeyRes.data);
+                                    success = true;
+                                } else { resStr = foreignKeyRes?.message || 'Failed to fetch foreign keys'; }
+                            } catch (e: any) {
+                                resStr = `获取外键关系失败: ${e?.message || e}`;
+                            }
+                        } else { resStr = 'Connection not found'; }
+                        break;
+                    }
+                    case 'get_triggers': {
+                        const conn = useStore.getState().connections.find(c => c.id === args.connectionId);
+                        if (conn) {
+                            try {
+                                const safeDbName = args.dbName ? String(args.dbName).trim() : '';
+                                const safeTable = args.tableName ? String(args.tableName).trim() : '';
+                                const { DBGetTriggers } = await import('../../wailsjs/go/app/App');
+                                const triggerRes = await DBGetTriggers(buildRpcConnectionConfig(conn.config) as any, safeDbName, safeTable);
+                                if (triggerRes?.success && Array.isArray(triggerRes.data)) {
+                                    resStr = JSON.stringify(triggerRes.data);
+                                    success = true;
+                                } else { resStr = triggerRes?.message || 'Failed to fetch triggers'; }
+                            } catch (e: any) {
+                                resStr = `获取触发器定义失败: ${e?.message || e}`;
+                            }
+                        } else { resStr = 'Connection not found'; }
+                        break;
+                    }
                     case 'get_table_ddl': {
                         const conn = useStore.getState().connections.find(c => c.id === args.connectionId);
                         if (conn) {
diff --git a/frontend/src/components/AISettingsModal.edit-password.test.tsx b/frontend/src/components/AISettingsModal.edit-password.test.tsx
index 9ebec72..f2b00d8 100644
--- a/frontend/src/components/AISettingsModal.edit-password.test.tsx
+++ b/frontend/src/components/AISettingsModal.edit-password.test.tsx
@@ -26,17 +26,22 @@ describe('AISettingsModal edit password behavior', () => {
     expect(source).toContain('新增 Skill');
   });
 
-  it('explains external MCP installation and renders selectable client install states', () => {
-    expect(source).toContain('把 GoNavi 注册成外部 AI 客户端可调用的 MCP Server');
-    expect(source).toContain('安装到外部客户端');
-    expect(source).toContain('未安装');
-    expect(source).toContain('需更新');
-    expect(source).toContain('已安装');
-    expect(source).toContain('刷新状态');
-    expect(source).toContain('复制配置路径');
-    expect(source).toContain('复制启动命令');
+  it('delegates bulky MCP and built-in tool sections to dedicated ai components', () => {
+    expect(source).toContain("import AIBuiltinToolsCatalog from './ai/AIBuiltinToolsCatalog';");
+    expect(source).toContain("import AIMCPClientInstallPanel from './ai/AIMCPClientInstallPanel';");
+    expect(source).toContain("import AIMCPServerCard from './ai/AIMCPServerCard';");
+    expect(source).toContain('<AIMCPClientInstallPanel');
+    expect(source).toContain('<AIMCPServerCard');
+    expect(source).toContain('<AIBuiltinToolsCatalog');
+  });
+
+  it('wires the external MCP client install panel actions back to the modal handlers', () => {
+    expect(source).toContain('statuses={mcpClientStatuses}');
+    expect(source).toContain('selectedClient={selectedMCPClient}');
+    expect(source).toContain('onRefreshStatus={() => void loadMCPClientStatuses()}');
+    expect(source).toContain('onCopyConfigPath={() => void handleCopySelectedMCPConfigPath()}');
+    expect(source).toContain('onCopyLaunchCommand={() => void handleCopySelectedMCPLaunchCommand()}');
     expect(source).toContain('handleInstallSelectedMCPClient');
-    expect(source).toContain('无需重复安装');
   });
 
   it('waits briefly for the AI service bridge before warning and removes noisy provider debug logs', () => {
diff --git a/frontend/src/components/AISettingsModal.tsx b/frontend/src/components/AISettingsModal.tsx
index 8f1ecfa..b2fc6c7 100644
--- a/frontend/src/components/AISettingsModal.tsx
+++ b/frontend/src/components/AISettingsModal.tsx
@@ -1,6 +1,6 @@
 import React, { useState, useEffect, useCallback, useMemo, useRef } from 'react';
 import { Modal, Button, Input, Select, Form, message as antdMessage, Tooltip, Tabs, Space, Popconfirm, Slider } from 'antd';
-import { PlusOutlined, DeleteOutlined, EditOutlined, CheckOutlined, ApiOutlined, SafetyCertificateOutlined, RobotOutlined, ThunderboltOutlined, CloudOutlined, ExperimentOutlined, KeyOutlined, LinkOutlined, AppstoreOutlined, ToolOutlined, ReloadOutlined, CopyOutlined } from '@ant-design/icons';
+import { PlusOutlined, DeleteOutlined, EditOutlined, CheckOutlined, ApiOutlined, SafetyCertificateOutlined, RobotOutlined, ThunderboltOutlined, CloudOutlined, ExperimentOutlined, KeyOutlined, LinkOutlined, AppstoreOutlined, ToolOutlined } from '@ant-design/icons';
 import type { AIProviderConfig, AIProviderType, AISafetyLevel, AIContextLevel, AIUserPromptSettings, AIMCPServerConfig, AIMCPToolDescriptor, AIMCPClientInstallStatus, AISkillConfig, AISkillScope } from '../types';
 import {
     QWEN_BAILIAN_ANTHROPIC_BASE_URL,
@@ -22,6 +22,9 @@ import { resolveProviderSecretDraft } from '../utils/providerSecretDraft';
 import { buildAddProviderEditorSession, buildClosedProviderEditorSession, buildEditProviderEditorSession, type ProviderEditorSession } from '../utils/aiProviderEditorState';
 import type { OverlayWorkbenchTheme } from '../utils/overlayWorkbenchTheme';
 import { BUILTIN_AI_TOOL_INFO } from '../utils/aiToolRegistry';
+import AIBuiltinToolsCatalog from './ai/AIBuiltinToolsCatalog';
+import AIMCPClientInstallPanel from './ai/AIMCPClientInstallPanel';
+import AIMCPServerCard from './ai/AIMCPServerCard';
 interface AISettingsModalProps {
     open: boolean;
     onClose: () => void;
@@ -219,27 +222,6 @@ const SKILL_SCOPE_OPTIONS: Array<{ value: AISkillScope; label: string; desc: str
     { value: 'jvmDiagnostic', label: 'JVM 诊断', desc: '仅 JVM 诊断工作台启用' },
 ];
 
-const parseMCPEnvText = (text: string): Record<string, string> => {
-    const result: Record<string, string> = {};
-    String(text || '')
-        .split(/\r?\n/)
-        .map((line) => line.trim())
-        .filter(Boolean)
-        .forEach((line) => {
-            const index = line.indexOf('=');
-            if (index <= 0) return;
-            const key = line.slice(0, index).trim();
-            if (!key) return;
-            result[key] = line.slice(index + 1);
-        });
-    return result;
-};
-
-const stringifyMCPEnv = (env?: Record<string, string>): string =>
-    Object.entries(env || {})
-        .map(([key, value]) => `${key}=${value}`)
-        .join('\n');
-
 const AISettingsModal: React.FC<AISettingsModalProps> = ({ open, onClose, darkMode, overlayTheme, focusProviderId }) => {
     const [providers, setProviders] = useState<AIProviderConfig[]>([]);
     const [activeProviderId, setActiveProviderId] = useState<string>('');
@@ -272,36 +254,6 @@ const AISettingsModal: React.FC<AISettingsModalProps> = ({ open, onClose, darkMo
     const cardHoverBg = darkMode ? 'rgba(255,255,255,0.06)' : 'rgba(0,0,0,0.03)';
     const sectionLabelColor = darkMode ? 'rgba(255,255,255,0.5)' : 'rgba(0,0,0,0.4)';
     const inputBg = darkMode ? 'rgba(255,255,255,0.04)' : 'rgba(0,0,0,0.02)';
-    const getMCPClientStatusTone = useCallback((status?: AIMCPClientInstallStatus) => {
-        const messageText = String(status?.message || '');
-        if (status?.matchesCurrent) {
-            return {
-                label: '已安装',
-                color: '#16a34a',
-                bg: darkMode ? 'rgba(34,197,94,0.18)' : 'rgba(34,197,94,0.12)',
-            };
-        }
-        if (status?.installed) {
-            return {
-                label: '需更新',
-                color: '#d97706',
-                bg: darkMode ? 'rgba(245,158,11,0.18)' : 'rgba(245,158,11,0.12)',
-            };
-        }
-        if (messageText.includes('失败') || messageText.includes('异常')) {
-            return {
-                label: '需检查',
-                color: '#dc2626',
-                bg: darkMode ? 'rgba(239,68,68,0.18)' : 'rgba(239,68,68,0.1)',
-            };
-        }
-        return {
-            label: '未安装',
-            color: darkMode ? 'rgba(255,255,255,0.72)' : '#64748b',
-            bg: darkMode ? 'rgba(255,255,255,0.08)' : 'rgba(100,116,139,0.08)',
-        };
-    }, [darkMode]);
-
     // Hook 必须在组件顶层调用，不能在条件分支内
     const watchedType = Form.useWatch('type', form);
     const watchedPresetKey = Form.useWatch('presetKey', form);
@@ -1242,166 +1194,23 @@ const AISettingsModal: React.FC<AISettingsModalProps> = ({ open, onClose, darkMo
 
     const renderMCPSettings = () => (
         <div style={{ display: 'flex', flexDirection: 'column', gap: 12 }}>
-            <div style={{ fontSize: 13, color: overlayTheme.mutedText, marginBottom: 4, lineHeight: 1.7 }}>
-                这里的“安装到客户端”是把 GoNavi 注册成外部 AI 客户端可调用的 MCP Server，供 Claude Code 或 Codex 使用；不是 GoNavi 自己安装自己。
-            </div>
-            <div style={{
-                padding: '16px',
-                borderRadius: 14,
-                border: `1px solid ${cardBorder}`,
-                background: cardBg,
-                display: 'flex',
-                flexDirection: 'column',
-                gap: 14,
-            }}>
-                <div style={{ display: 'flex', flexDirection: 'column', gap: 4 }}>
-                    <div style={{ fontWeight: 700, fontSize: 14, color: overlayTheme.titleText }}>安装到外部客户端</div>
-                    <div style={{ fontSize: 12, color: overlayTheme.mutedText, lineHeight: 1.7 }}>
-                        先选择目标客户端，再把当前 GoNavi 安装路径写入它的用户级 MCP 配置。GoNavi 会自动处理配置文件路径，不需要你自己找本机 exe。
-                    </div>
-                </div>
-
-                <div style={{ display: 'grid', gridTemplateColumns: 'repeat(auto-fit, minmax(220px, 1fr))', gap: 10 }}>
-                    {mcpClientStatuses.map((status) => {
-                        const active = selectedMCPClient === status.client;
-                        const tone = getMCPClientStatusTone(status);
-                        return (
-                            <div
-                                key={status.client}
-                                onClick={() => {
-                                    if (status.client === 'claude-code' || status.client === 'codex') {
-                                        setSelectedMCPClient(status.client);
-                                    }
-                                }}
-                                style={{
-                                    padding: '14px 14px 12px',
-                                    borderRadius: 12,
-                                    border: `1.5px solid ${active ? overlayTheme.selectedText : cardBorder}`,
-                                    background: active ? overlayTheme.selectedBg : (darkMode ? 'rgba(255,255,255,0.02)' : 'rgba(255,255,255,0.7)'),
-                                    cursor: 'pointer',
-                                    display: 'flex',
-                                    flexDirection: 'column',
-                                    gap: 10,
-                                    transition: 'all 0.2s ease',
-                                }}
-                            >
-                                <div style={{ display: 'flex', alignItems: 'center', justifyContent: 'space-between', gap: 12 }}>
-                                    <div style={{ fontWeight: 700, fontSize: 14, color: overlayTheme.titleText }}>
-                                        {status.displayName}
-                                    </div>
-                                    <div style={{
-                                        padding: '4px 10px',
-                                        borderRadius: 999,
-                                        fontSize: 12,
-                                        fontWeight: 700,
-                                        color: tone.color,
-                                        background: tone.bg,
-                                        whiteSpace: 'nowrap',
-                                    }}>
-                                        {tone.label}
-                                    </div>
-                                </div>
-                                <div style={{ fontSize: 12, color: overlayTheme.mutedText, lineHeight: 1.6 }}>
-                                    {status.matchesCurrent
-                                        ? '当前 GoNavi 安装路径已写入，打开客户端后可直接使用。'
-                                        : status.installed
-                                            ? '检测到已有安装记录，但建议更新为当前 GoNavi 路径。'
-                                            : '当前尚未写入 GoNavi MCP 配置。'}
-                                </div>
-                            </div>
-                        );
-                    })}
-                </div>
-
-                <div style={{
-                    padding: '12px 14px',
-                    borderRadius: 12,
-                    border: `1px solid ${cardBorder}`,
-                    background: darkMode ? 'rgba(255,255,255,0.03)' : 'rgba(255,255,255,0.78)',
-                    display: 'flex',
-                    flexDirection: 'column',
-                    gap: 6,
-                }}>
-                    <div style={{ display: 'flex', alignItems: 'center', gap: 8, flexWrap: 'wrap' }}>
-                        <div style={{ fontWeight: 700, fontSize: 13, color: overlayTheme.titleText }}>
-                            {selectedMCPClientStatus?.displayName || '客户端'} 状态
-                        </div>
-                        {selectedMCPClientStatus && (
-                            <div style={{
-                                padding: '3px 9px',
-                                borderRadius: 999,
-                                fontSize: 11,
-                                fontWeight: 700,
-                                color: getMCPClientStatusTone(selectedMCPClientStatus).color,
-                                background: getMCPClientStatusTone(selectedMCPClientStatus).bg,
-                            }}>
-                                {getMCPClientStatusTone(selectedMCPClientStatus).label}
-                            </div>
-                        )}
-                    </div>
-                    <div style={{ fontSize: 12, color: overlayTheme.mutedText, lineHeight: 1.7 }}>
-                        {selectedMCPClientStatus?.message || '未检测到安装状态'}
-                    </div>
-                    {selectedMCPClientStatus?.configPath && (
-                        <div style={{ fontSize: 12, color: overlayTheme.mutedText, lineHeight: 1.6, fontFamily: 'var(--gn-font-mono)' }}>
-                            配置文件：{selectedMCPClientStatus.configPath}
-                        </div>
-                    )}
-                    {selectedMCPClientCommandText && (
-                        <div style={{ fontSize: 12, color: overlayTheme.mutedText, lineHeight: 1.6, fontFamily: 'var(--gn-font-mono)' }}>
-                            启动命令：{selectedMCPClientCommandText}
-                        </div>
-                    )}
-                    <div style={{ display: 'flex', gap: 8, flexWrap: 'wrap' }}>
-                        <Button
-                            size="small"
-                            icon={<ReloadOutlined />}
-                            loading={mcpClientStatusLoading}
-                            onClick={() => void loadMCPClientStatuses()}
-                            style={{ borderRadius: 8 }}
-                        >
-                            刷新状态
-                        </Button>
-                        <Button
-                            size="small"
-                            icon={<CopyOutlined />}
-                            disabled={!selectedMCPClientStatus?.configPath}
-                            onClick={() => void handleCopySelectedMCPConfigPath()}
-                            style={{ borderRadius: 8 }}
-                        >
-                            复制配置路径
-                        </Button>
-                        <Button
-                            size="small"
-                            icon={<CopyOutlined />}
-                            disabled={!selectedMCPClientCommandText}
-                            onClick={() => void handleCopySelectedMCPLaunchCommand()}
-                            style={{ borderRadius: 8 }}
-                        >
-                            复制启动命令
-                        </Button>
-                    </div>
-                </div>
-
-                <div style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center', gap: 12, flexWrap: 'wrap' }}>
-                    <div style={{ fontSize: 12, color: overlayTheme.mutedText, lineHeight: 1.6 }}>
-                        安装后重启对应客户端即可生效；若已经是当前路径，会直接提示无需重复安装。
-                    </div>
-                    <Button
-                        type={selectedMCPClientStatus?.matchesCurrent ? 'default' : 'primary'}
-                        onClick={handleInstallSelectedMCPClient}
-                        loading={loading}
-                        disabled={Boolean(selectedMCPClientStatus?.matchesCurrent)}
-                        style={{ borderRadius: 10, fontWeight: 600, minWidth: 176, height: 40 }}
-                    >
-                        {selectedMCPClientStatus?.matchesCurrent
-                            ? `${selectedMCPClientStatus.displayName} 已安装`
-                            : selectedMCPClientStatus?.installed
-                                ? `更新到 ${selectedMCPClientStatus?.displayName || '客户端'}`
-                                : `安装到 ${selectedMCPClientStatus?.displayName || '客户端'}`}
-                    </Button>
-                </div>
-            </div>
+            <AIMCPClientInstallPanel
+                statuses={mcpClientStatuses}
+                selectedClient={selectedMCPClient}
+                selectedStatus={selectedMCPClientStatus}
+                selectedCommandText={selectedMCPClientCommandText}
+                darkMode={darkMode}
+                overlayTheme={overlayTheme}
+                cardBg={cardBg}
+                cardBorder={cardBorder}
+                loading={loading}
+                statusLoading={mcpClientStatusLoading}
+                onSelectClient={setSelectedMCPClient}
+                onRefreshStatus={() => void loadMCPClientStatuses()}
+                onCopyConfigPath={() => void handleCopySelectedMCPConfigPath()}
+                onCopyLaunchCommand={() => void handleCopySelectedMCPLaunchCommand()}
+                onInstall={handleInstallSelectedMCPClient}
+            />
             <div style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center', gap: 12 }}>
                 <div style={{ fontSize: 12, color: overlayTheme.mutedText }}>支持命令、参数、环境变量和超时，保存后会自动进入 AI 工具列表。</div>
                 <Button icon={<PlusOutlined />} onClick={handleAddMCPServer} style={{ borderRadius: 10 }}>新增 MCP 服务</Button>
@@ -1411,81 +1220,23 @@ const AISettingsModal: React.FC<AISettingsModalProps> = ({ open, onClose, darkMo
                     还没有 MCP 服务。常见形式是 `node server.js`、`uvx some-mcp-server`、`python -m server`。
                 </div>
             )}
-            {mcpServers.map((server) => {
-                const serverTools = mcpTools.filter((tool) => tool.serverId === server.id);
-                return (
-                    <div key={server.id} style={{ padding: '14px 16px', borderRadius: 14, border: `1px solid ${cardBorder}`, background: cardBg, display: 'flex', flexDirection: 'column', gap: 12 }}>
-                        <div style={{ display: 'grid', gridTemplateColumns: 'minmax(0,1fr) 132px', gap: 12 }}>
-                            <Input
-                                value={server.name}
-                                onChange={(event) => updateMCPServerDraft(server.id, { name: event.target.value })}
-                                placeholder="服务名称，例如：Filesystem / Browser / GitHub"
-                                style={{ borderRadius: 10, background: inputBg, border: `1px solid ${cardBorder}` }}
-                            />
-                            <Select
-                                value={server.enabled ? 'enabled' : 'disabled'}
-                                onChange={(value) => updateMCPServerDraft(server.id, { enabled: value === 'enabled' })}
-                                options={[{ label: '已启用', value: 'enabled' }, { label: '已禁用', value: 'disabled' }]}
-                            />
-                        </div>
-                        <div style={{ display: 'grid', gridTemplateColumns: '132px minmax(0,1fr) 132px', gap: 12 }}>
-                            <Select
-                                value={server.transport}
-                                onChange={(value) => updateMCPServerDraft(server.id, { transport: value as AIMCPServerConfig['transport'] })}
-                                options={[{ label: 'stdio', value: 'stdio' }]}
-                            />
-                            <Input
-                                value={server.command}
-                                onChange={(event) => updateMCPServerDraft(server.id, { command: event.target.value })}
-                                placeholder="启动命令，例如：node / uvx / python"
-                                style={{ borderRadius: 10, background: inputBg, border: `1px solid ${cardBorder}` }}
-                            />
-                            <Input
-                                type="number"
-                                min={3}
-                                max={120}
-                                value={server.timeoutSeconds}
-                                onChange={(event) => updateMCPServerDraft(server.id, { timeoutSeconds: Number(event.target.value) || 20 })}
-                                placeholder="超时(秒)"
-                                style={{ borderRadius: 10, background: inputBg, border: `1px solid ${cardBorder}` }}
-                            />
-                        </div>
-                        <Select
-                            mode="tags"
-                            value={server.args || []}
-                            onChange={(value) => updateMCPServerDraft(server.id, { args: value })}
-                            placeholder="命令参数，回车录入，例如：server.js、--stdio"
-                            style={{ width: '100%' }}
-                        />
-                        <Input.TextArea
-                            rows={3}
-                            value={stringifyMCPEnv(server.env)}
-                            onChange={(event) => updateMCPServerDraft(server.id, { env: parseMCPEnvText(event.target.value) })}
-                            placeholder={"环境变量，每行一个 KEY=VALUE，例如：\nOPENAI_API_KEY=...\nGITHUB_TOKEN=..."}
-                            style={{ borderRadius: 10, background: inputBg, border: `1px solid ${cardBorder}`, fontFamily: 'var(--gn-font-mono)' }}
-                        />
-                        {serverTools.length > 0 && (
-                            <div style={{ display: 'flex', flexDirection: 'column', gap: 6 }}>
-                                <div style={{ fontSize: 12, fontWeight: 700, color: overlayTheme.titleText }}>已发现工具</div>
-                                <div style={{ display: 'flex', flexWrap: 'wrap', gap: 8 }}>
-                                    {serverTools.map((tool) => (
-                                        <span key={tool.alias} style={{ padding: '4px 8px', borderRadius: 999, background: darkMode ? 'rgba(255,255,255,0.06)' : 'rgba(0,0,0,0.04)', fontSize: 12, color: overlayTheme.mutedText }}>
-                                            {tool.alias}
-                                        </span>
-                                    ))}
-                                </div>
-                            </div>
-                        )}
-                        <div style={{ display: 'flex', justifyContent: 'flex-end', gap: 8 }}>
-                            <Button onClick={() => handleTestMCPServer(server)} loading={loading} style={{ borderRadius: 10 }}>测试工具发现</Button>
-                            <Button type="primary" onClick={() => handleSaveMCPServer(server)} loading={loading} style={{ borderRadius: 10, fontWeight: 600 }}>保存</Button>
-                            <Popconfirm title="删除这个 MCP 服务？" okText="删除" cancelText="取消" onConfirm={() => handleDeleteMCPServer(server.id)}>
-                                <Button danger icon={<DeleteOutlined />} style={{ borderRadius: 10 }}>删除</Button>
-                            </Popconfirm>
-                        </div>
-                    </div>
-                );
-            })}
+            {mcpServers.map((server) => (
+                <AIMCPServerCard
+                    key={server.id}
+                    server={server}
+                    serverTools={mcpTools.filter((tool) => tool.serverId === server.id)}
+                    cardBg={cardBg}
+                    cardBorder={cardBorder}
+                    inputBg={inputBg}
+                    darkMode={darkMode}
+                    overlayTheme={overlayTheme}
+                    loading={loading}
+                    onChange={(patch) => updateMCPServerDraft(server.id, patch)}
+                    onTest={() => handleTestMCPServer(server)}
+                    onSave={() => handleSaveMCPServer(server)}
+                    onDelete={() => handleDeleteMCPServer(server.id)}
+                />
+            ))}
         </div>
     );
 
@@ -1558,46 +1309,6 @@ const AISettingsModal: React.FC<AISettingsModalProps> = ({ open, onClose, darkMo
         </div>
     );
 
-    const renderBuiltinTools = () => (
-        <div style={{ display: 'flex', flexDirection: 'column', gap: 12 }}>
-            <div style={{ fontSize: 13, color: overlayTheme.mutedText, marginBottom: 4 }}>
-                AI 助手在处理数据库相关问题时，可以自动调用以下内置工具获取真实数据，全程无需人工干预。
-            </div>
-            <div style={{ fontSize: 12, color: overlayTheme.mutedText, opacity: 0.7, padding: '8px 12px', borderRadius: 8, background: cardBg, border: `1px solid ${cardBorder}` }}>
-                💡 工作流程：get_connections → get_databases → get_tables → get_columns → 生成 SQL
-            </div>
-            {BUILTIN_AI_TOOL_INFO.map(tool => (
-                <div key={tool.name} style={{
-                    padding: '14px 16px', borderRadius: 14, border: `1px solid ${cardBorder}`, background: cardBg,
-                    transition: 'all 0.2s ease',
-                }}>
-                    <div style={{ display: 'flex', alignItems: 'center', gap: 10, marginBottom: 8 }}>
-                        <span style={{ fontSize: 20 }}>{tool.icon}</span>
-                        <div>
-                            <div style={{ fontWeight: 700, fontSize: 14, color: overlayTheme.titleText, fontFamily: 'var(--gn-font-mono)' }}>
-                                {tool.name}
-                            </div>
-                            <div style={{ fontSize: 13, color: overlayTheme.mutedText, marginTop: 2 }}>{tool.desc}</div>
-                        </div>
-                    </div>
-                    <div style={{
-                        fontSize: 13, color: overlayTheme.mutedText, lineHeight: 1.6, padding: '8px 12px',
-                        background: darkMode ? 'rgba(0,0,0,0.15)' : 'rgba(0,0,0,0.02)', borderRadius: 8,
-                    }}>
-                        {tool.detail}
-                    </div>
-                    <div style={{ marginTop: 8, fontSize: 12, color: overlayTheme.mutedText, opacity: 0.7, display: 'flex', alignItems: 'center', gap: 6 }}>
-                        <ToolOutlined style={{ fontSize: 12 }} />
-                        <span>参数：</span>
-                        <code style={{ fontFamily: 'var(--gn-font-mono)', fontSize: 12, padding: '1px 6px', borderRadius: 4, background: darkMode ? 'rgba(255,255,255,0.06)' : 'rgba(0,0,0,0.04)' }}>
-                            {tool.params}
-                        </code>
-                    </div>
-                </div>
-            ))}
-        </div>
-    );
-
     const modalShellStyle = {
         background: overlayTheme.shellBg, border: overlayTheme.shellBorder,
         boxShadow: overlayTheme.shellShadow, backdropFilter: overlayTheme.shellBackdropFilter,
@@ -1683,7 +1394,14 @@ const AISettingsModal: React.FC<AISettingsModalProps> = ({ open, onClose, darkMo
                       {activeSection === 'context' && renderContextSettings()}
                       {activeSection === 'mcp' && renderMCPSettings()}
                       {activeSection === 'skills' && renderSkillSettings()}
-                      {activeSection === 'tools' && renderBuiltinTools()}
+                      {activeSection === 'tools' && (
+                          <AIBuiltinToolsCatalog
+                              darkMode={darkMode}
+                              overlayTheme={overlayTheme}
+                              cardBg={cardBg}
+                              cardBorder={cardBorder}
+                          />
+                      )}
                       {activeSection === 'prompts' && renderPromptSettings()}
                   </div>
               </div>
diff --git a/frontend/src/components/ai/AIBuiltinToolsCatalog.test.tsx b/frontend/src/components/ai/AIBuiltinToolsCatalog.test.tsx
new file mode 100644
index 0000000..89806fc
--- /dev/null
+++ b/frontend/src/components/ai/AIBuiltinToolsCatalog.test.tsx
@@ -0,0 +1,24 @@
+import React from 'react';
+import { renderToStaticMarkup } from 'react-dom/server';
+import { describe, expect, it } from 'vitest';
+
+import AIBuiltinToolsCatalog from './AIBuiltinToolsCatalog';
+import { buildOverlayWorkbenchTheme } from '../../utils/overlayWorkbenchTheme';
+
+describe('AIBuiltinToolsCatalog', () => {
+  it('renders the deep structure analysis flow and the newly added built-in tools', () => {
+    const markup = renderToStaticMarkup(
+      <AIBuiltinToolsCatalog
+        darkMode={false}
+        overlayTheme={buildOverlayWorkbenchTheme(false)}
+        cardBg="#fff"
+        cardBorder="rgba(0,0,0,0.08)"
+      />,
+    );
+
+    expect(markup).toContain('结构深挖');
+    expect(markup).toContain('get_indexes');
+    expect(markup).toContain('get_foreign_keys');
+    expect(markup).toContain('get_triggers');
+  });
+});
diff --git a/frontend/src/components/ai/AIBuiltinToolsCatalog.tsx b/frontend/src/components/ai/AIBuiltinToolsCatalog.tsx
new file mode 100644
index 0000000..da33dd7
--- /dev/null
+++ b/frontend/src/components/ai/AIBuiltinToolsCatalog.tsx
@@ -0,0 +1,105 @@
+import React from 'react';
+import { ToolOutlined } from '@ant-design/icons';
+
+import type { OverlayWorkbenchTheme } from '../../utils/overlayWorkbenchTheme';
+import { BUILTIN_AI_TOOL_INFO } from '../../utils/aiToolRegistry';
+
+interface AIBuiltinToolsCatalogProps {
+  darkMode: boolean;
+  overlayTheme: OverlayWorkbenchTheme;
+  cardBg: string;
+  cardBorder: string;
+}
+
+const BUILTIN_TOOL_FLOWS = [
+  {
+    title: '定位表与字段',
+    steps: 'get_connections → get_databases → get_tables → get_columns',
+    description: '适合先找连接、找库、找表，再确认真实字段名后生成 SQL。',
+  },
+  {
+    title: '结构深挖',
+    steps: 'get_columns → get_indexes → get_foreign_keys → get_triggers → get_table_ddl',
+    description: '适合做索引优化、关系梳理、隐式副作用排查和 DDL 审查。',
+  },
+  {
+    title: '只读验证',
+    steps: 'get_columns → execute_sql',
+    description: '适合生成 SQL 后做小范围结果核对，仍会受 AI 安全级别控制。',
+  },
+];
+
+export const AIBuiltinToolsCatalog: React.FC<AIBuiltinToolsCatalogProps> = ({
+  darkMode,
+  overlayTheme,
+  cardBg,
+  cardBorder,
+}) => (
+  <div style={{ display: 'flex', flexDirection: 'column', gap: 12 }}>
+    <div style={{ fontSize: 13, color: overlayTheme.mutedText, marginBottom: 4 }}>
+      AI 助手在处理数据库相关问题时，可以自动调用以下内置工具获取真实数据，全程无需人工干预。
+    </div>
+    <div style={{ display: 'grid', gap: 8 }}>
+      {BUILTIN_TOOL_FLOWS.map((flow) => (
+        <div
+          key={flow.title}
+          style={{
+            fontSize: 12,
+            color: overlayTheme.mutedText,
+            padding: '10px 12px',
+            borderRadius: 10,
+            background: cardBg,
+            border: `1px solid ${cardBorder}`,
+          }}
+        >
+          <div style={{ fontWeight: 700, color: overlayTheme.titleText }}>{flow.title}</div>
+          <div style={{ marginTop: 4, fontFamily: 'var(--gn-font-mono)' }}>{flow.steps}</div>
+          <div style={{ marginTop: 4, opacity: 0.8, lineHeight: 1.6 }}>{flow.description}</div>
+        </div>
+      ))}
+    </div>
+    {BUILTIN_AI_TOOL_INFO.map((tool) => (
+      <div
+        key={tool.name}
+        style={{
+          padding: '14px 16px',
+          borderRadius: 14,
+          border: `1px solid ${cardBorder}`,
+          background: cardBg,
+          transition: 'all 0.2s ease',
+        }}
+      >
+        <div style={{ display: 'flex', alignItems: 'center', gap: 10, marginBottom: 8 }}>
+          <span style={{ fontSize: 20 }}>{tool.icon}</span>
+          <div>
+            <div style={{ fontWeight: 700, fontSize: 14, color: overlayTheme.titleText, fontFamily: 'var(--gn-font-mono)' }}>
+              {tool.name}
+            </div>
+            <div style={{ fontSize: 13, color: overlayTheme.mutedText, marginTop: 2 }}>{tool.desc}</div>
+          </div>
+        </div>
+        <div
+          style={{
+            fontSize: 13,
+            color: overlayTheme.mutedText,
+            lineHeight: 1.6,
+            padding: '8px 12px',
+            background: darkMode ? 'rgba(0,0,0,0.15)' : 'rgba(0,0,0,0.02)',
+            borderRadius: 8,
+          }}
+        >
+          {tool.detail}
+        </div>
+        <div style={{ marginTop: 8, fontSize: 12, color: overlayTheme.mutedText, opacity: 0.7, display: 'flex', alignItems: 'center', gap: 6 }}>
+          <ToolOutlined style={{ fontSize: 12 }} />
+          <span>参数：</span>
+          <code style={{ fontFamily: 'var(--gn-font-mono)', fontSize: 12, padding: '1px 6px', borderRadius: 4, background: darkMode ? 'rgba(255,255,255,0.06)' : 'rgba(0,0,0,0.04)' }}>
+            {tool.params}
+          </code>
+        </div>
+      </div>
+    ))}
+  </div>
+);
+
+export default AIBuiltinToolsCatalog;
diff --git a/frontend/src/components/ai/AIMCPClientInstallPanel.test.tsx b/frontend/src/components/ai/AIMCPClientInstallPanel.test.tsx
new file mode 100644
index 0000000..4500ecf
--- /dev/null
+++ b/frontend/src/components/ai/AIMCPClientInstallPanel.test.tsx
@@ -0,0 +1,66 @@
+import React from 'react';
+import { renderToStaticMarkup } from 'react-dom/server';
+import { describe, expect, it } from 'vitest';
+
+import AIMCPClientInstallPanel from './AIMCPClientInstallPanel';
+import { buildOverlayWorkbenchTheme } from '../../utils/overlayWorkbenchTheme';
+
+describe('AIMCPClientInstallPanel', () => {
+  it('renders a clearer external-client selection flow instead of parallel install buttons', () => {
+    const markup = renderToStaticMarkup(
+      <AIMCPClientInstallPanel
+        statuses={[
+          {
+            client: 'claude-code',
+            displayName: 'Claude Code',
+            installed: false,
+            matchesCurrent: false,
+            message: '未安装到 Claude Code 用户级配置',
+          },
+          {
+            client: 'codex',
+            displayName: 'Codex',
+            installed: true,
+            matchesCurrent: false,
+            message: '检测到旧的 Codex 配置，建议更新',
+            configPath: '~/.codex/config.toml',
+            command: 'gonavi-mcp-server',
+            args: ['stdio'],
+          },
+        ]}
+        selectedClient="codex"
+        selectedStatus={{
+          client: 'codex',
+          displayName: 'Codex',
+          installed: true,
+          matchesCurrent: false,
+          message: '检测到旧的 Codex 配置，建议更新',
+          configPath: '~/.codex/config.toml',
+          command: 'gonavi-mcp-server',
+          args: ['stdio'],
+        }}
+        selectedCommandText="gonavi-mcp-server stdio"
+        darkMode={false}
+        overlayTheme={buildOverlayWorkbenchTheme(false)}
+        cardBg="#fff"
+        cardBorder="rgba(0,0,0,0.08)"
+        loading={false}
+        statusLoading={false}
+        onSelectClient={() => {}}
+        onRefreshStatus={() => {}}
+        onCopyConfigPath={() => {}}
+        onCopyLaunchCommand={() => {}}
+        onInstall={() => {}}
+      />,
+    );
+
+    expect(markup).toContain('不是给 GoNavi 自己安装 MCP');
+    expect(markup).toContain('接入外部客户端');
+    expect(markup).toContain('目标客户端');
+    expect(markup).toContain('未接入');
+    expect(markup).toContain('需更新');
+    expect(markup).toContain('复制配置路径');
+    expect(markup).toContain('复制启动命令');
+    expect(markup).toContain('更新 Codex 配置');
+  });
+});
diff --git a/frontend/src/components/ai/AIMCPClientInstallPanel.tsx b/frontend/src/components/ai/AIMCPClientInstallPanel.tsx
new file mode 100644
index 0000000..4789504
--- /dev/null
+++ b/frontend/src/components/ai/AIMCPClientInstallPanel.tsx
@@ -0,0 +1,314 @@
+import React from 'react';
+import { Button } from 'antd';
+import { CheckCircleFilled, CopyOutlined, ReloadOutlined } from '@ant-design/icons';
+
+import type { AIMCPClientInstallStatus } from '../../types';
+import type { OverlayWorkbenchTheme } from '../../utils/overlayWorkbenchTheme';
+
+type MCPClientKey = 'claude-code' | 'codex';
+
+interface AIMCPClientInstallPanelProps {
+  statuses: AIMCPClientInstallStatus[];
+  selectedClient: MCPClientKey;
+  selectedStatus?: AIMCPClientInstallStatus;
+  selectedCommandText: string;
+  darkMode: boolean;
+  overlayTheme: OverlayWorkbenchTheme;
+  cardBg: string;
+  cardBorder: string;
+  loading: boolean;
+  statusLoading: boolean;
+  onSelectClient: (client: MCPClientKey) => void;
+  onRefreshStatus: () => void;
+  onCopyConfigPath: () => void;
+  onCopyLaunchCommand: () => void;
+  onInstall: () => void;
+}
+
+const getStatusTone = (status: AIMCPClientInstallStatus | undefined, darkMode: boolean) => {
+  const messageText = String(status?.message || '');
+  if (status?.matchesCurrent) {
+    return {
+      label: '已接入',
+      color: '#16a34a',
+      bg: darkMode ? 'rgba(34,197,94,0.18)' : 'rgba(34,197,94,0.12)',
+    };
+  }
+  if (status?.installed) {
+    return {
+      label: '需更新',
+      color: '#d97706',
+      bg: darkMode ? 'rgba(245,158,11,0.18)' : 'rgba(245,158,11,0.12)',
+    };
+  }
+  if (messageText.includes('失败') || messageText.includes('异常')) {
+    return {
+      label: '需检查',
+      color: '#dc2626',
+      bg: darkMode ? 'rgba(239,68,68,0.18)' : 'rgba(239,68,68,0.1)',
+    };
+  }
+  return {
+    label: '未接入',
+    color: darkMode ? 'rgba(255,255,255,0.72)' : '#64748b',
+    bg: darkMode ? 'rgba(255,255,255,0.08)' : 'rgba(100,116,139,0.08)',
+  };
+};
+
+const getStatusSummary = (status: AIMCPClientInstallStatus | undefined) => {
+  const messageText = String(status?.message || '');
+  if (status?.matchesCurrent) {
+    return '已经是当前 GoNavi 路径，无需重复接入。';
+  }
+  if (status?.installed) {
+    return '检测到已有 GoNavi 记录，但不是当前路径，建议更新。';
+  }
+  if (messageText.includes('失败') || messageText.includes('异常')) {
+    return '状态读取异常，建议刷新后再检查一次。';
+  }
+  return '当前还没有把 GoNavi MCP 写入这个客户端。';
+};
+
+const getClientCardDescription = (status: AIMCPClientInstallStatus | undefined) => {
+  if (status?.matchesCurrent) {
+    return '当前 GoNavi 路径已经写入，可直接在该客户端中调用。';
+  }
+  if (status?.installed) {
+    return '检测到旧的 GoNavi 记录，建议更新为当前安装路径。';
+  }
+  return '尚未写入 GoNavi MCP 配置。';
+};
+
+const resolveActionLabel = (status: AIMCPClientInstallStatus | undefined) => {
+  const label = status?.displayName || '客户端';
+  if (status?.matchesCurrent) {
+    return `${label} 已接入`;
+  }
+  if (status?.installed) {
+    return `更新 ${label} 配置`;
+  }
+  return `接入 ${label}`;
+};
+
+const AIMCPClientInstallPanel: React.FC<AIMCPClientInstallPanelProps> = ({
+  statuses,
+  selectedClient,
+  selectedStatus,
+  selectedCommandText,
+  darkMode,
+  overlayTheme,
+  cardBg,
+  cardBorder,
+  loading,
+  statusLoading,
+  onSelectClient,
+  onRefreshStatus,
+  onCopyConfigPath,
+  onCopyLaunchCommand,
+  onInstall,
+}) => (
+  <div style={{ display: 'flex', flexDirection: 'column', gap: 12 }}>
+    <div style={{ fontSize: 13, color: overlayTheme.mutedText, marginBottom: 4, lineHeight: 1.7 }}>
+      这里不是给 GoNavi 自己安装 MCP，而是把 GoNavi 作为 MCP Server 接入 Claude Code 或 Codex 这类外部 AI 客户端。
+    </div>
+
+    <div
+      style={{
+        padding: '16px',
+        borderRadius: 14,
+        border: `1px solid ${cardBorder}`,
+        background: cardBg,
+        display: 'flex',
+        flexDirection: 'column',
+        gap: 14,
+      }}
+    >
+      <div style={{ display: 'flex', flexDirection: 'column', gap: 4 }}>
+        <div style={{ fontWeight: 700, fontSize: 14, color: overlayTheme.titleText }}>接入外部客户端</div>
+        <div style={{ fontSize: 12, color: overlayTheme.mutedText, lineHeight: 1.7 }}>
+          选择目标客户端后，GoNavi 会自动把当前安装路径写入它的用户级 MCP 配置文件，不需要你自己去找本机 exe 或手动改配置。
+        </div>
+      </div>
+
+      <div
+        style={{
+          padding: '12px 14px',
+          borderRadius: 12,
+          border: `1px solid ${cardBorder}`,
+          background: darkMode ? 'rgba(255,255,255,0.03)' : 'rgba(255,255,255,0.78)',
+          fontSize: 12,
+          color: overlayTheme.mutedText,
+          lineHeight: 1.7,
+        }}
+      >
+        只会修改你选中的客户端用户级 MCP 配置，不会安装新的 GoNavi，也不会替换 GoNavi 自己的程序文件。
+      </div>
+
+      <div style={{ display: 'flex', flexDirection: 'column', gap: 8 }}>
+        <div style={{ fontWeight: 700, fontSize: 13, color: overlayTheme.titleText }}>目标客户端</div>
+        <div style={{ display: 'grid', gridTemplateColumns: 'repeat(auto-fit, minmax(220px, 1fr))', gap: 10 }}>
+          {statuses.map((status) => {
+            const client = status.client === 'codex' ? 'codex' : 'claude-code';
+            const active = selectedClient === client;
+            const tone = getStatusTone(status, darkMode);
+            return (
+              <button
+                key={status.client}
+                type="button"
+                onClick={() => onSelectClient(client)}
+                style={{
+                  padding: '14px 14px 12px',
+                  borderRadius: 12,
+                  border: `1.5px solid ${active ? overlayTheme.selectedText : cardBorder}`,
+                  background: active ? overlayTheme.selectedBg : (darkMode ? 'rgba(255,255,255,0.02)' : 'rgba(255,255,255,0.7)'),
+                  cursor: 'pointer',
+                  display: 'flex',
+                  flexDirection: 'column',
+                  gap: 10,
+                  textAlign: 'left',
+                  transition: 'all 0.2s ease',
+                  opacity: statusLoading ? 0.72 : 1,
+                }}
+              >
+                <div style={{ display: 'flex', alignItems: 'center', justifyContent: 'space-between', gap: 12 }}>
+                  <div style={{ display: 'flex', alignItems: 'center', gap: 10, minWidth: 0 }}>
+                    <div
+                      aria-hidden
+                      style={{
+                        width: 18,
+                        height: 18,
+                        borderRadius: 999,
+                        border: `1.5px solid ${active ? overlayTheme.selectedText : darkMode ? 'rgba(255,255,255,0.16)' : 'rgba(0,0,0,0.12)'}`,
+                        background: active ? overlayTheme.selectedText : 'transparent',
+                        display: 'flex',
+                        alignItems: 'center',
+                        justifyContent: 'center',
+                        flexShrink: 0,
+                      }}
+                    >
+                      {active ? <CheckCircleFilled style={{ color: '#fff', fontSize: 12 }} /> : null}
+                    </div>
+                    <div style={{ fontWeight: 700, fontSize: 14, color: overlayTheme.titleText }}>
+                      {status.displayName}
+                    </div>
+                  </div>
+                  <div
+                    style={{
+                      padding: '4px 10px',
+                      borderRadius: 999,
+                      fontSize: 12,
+                      fontWeight: 700,
+                      color: tone.color,
+                      background: tone.bg,
+                      whiteSpace: 'nowrap',
+                      flexShrink: 0,
+                    }}
+                  >
+                    {tone.label}
+                  </div>
+                </div>
+                <div style={{ fontSize: 12, color: overlayTheme.mutedText, lineHeight: 1.6 }}>
+                  {getClientCardDescription(status)}
+                </div>
+              </button>
+            );
+          })}
+        </div>
+      </div>
+
+      <div
+        style={{
+          padding: '12px 14px',
+          borderRadius: 12,
+          border: `1px solid ${cardBorder}`,
+          background: darkMode ? 'rgba(255,255,255,0.03)' : 'rgba(255,255,255,0.78)',
+          display: 'flex',
+          flexDirection: 'column',
+          gap: 6,
+        }}
+      >
+        <div style={{ display: 'flex', alignItems: 'center', gap: 8, flexWrap: 'wrap' }}>
+          <div style={{ fontWeight: 700, fontSize: 13, color: overlayTheme.titleText }}>
+            {selectedStatus?.displayName || '客户端'} 状态
+          </div>
+          {selectedStatus && (
+            <div
+              style={{
+                padding: '3px 9px',
+                borderRadius: 999,
+                fontSize: 11,
+                fontWeight: 700,
+                color: getStatusTone(selectedStatus, darkMode).color,
+                background: getStatusTone(selectedStatus, darkMode).bg,
+              }}
+            >
+              {getStatusTone(selectedStatus, darkMode).label}
+            </div>
+          )}
+        </div>
+        <div style={{ fontSize: 12, color: overlayTheme.titleText, lineHeight: 1.7 }}>
+          {getStatusSummary(selectedStatus)}
+        </div>
+        <div style={{ fontSize: 12, color: overlayTheme.mutedText, lineHeight: 1.7 }}>
+          检测结果：{selectedStatus?.message || '未检测到安装状态'}
+        </div>
+        {selectedStatus?.configPath && (
+          <div style={{ fontSize: 12, color: overlayTheme.mutedText, lineHeight: 1.6, fontFamily: 'var(--gn-font-mono)' }}>
+            配置文件：{selectedStatus.configPath}
+          </div>
+        )}
+        {selectedCommandText && (
+          <div style={{ fontSize: 12, color: overlayTheme.mutedText, lineHeight: 1.6, fontFamily: 'var(--gn-font-mono)' }}>
+            启动命令：{selectedCommandText}
+          </div>
+        )}
+        <div style={{ display: 'flex', gap: 8, flexWrap: 'wrap' }}>
+          <Button
+            size="small"
+            icon={<ReloadOutlined />}
+            loading={statusLoading}
+            onClick={onRefreshStatus}
+            style={{ borderRadius: 8 }}
+          >
+            刷新状态
+          </Button>
+          <Button
+            size="small"
+            icon={<CopyOutlined />}
+            disabled={!selectedStatus?.configPath}
+            onClick={onCopyConfigPath}
+            style={{ borderRadius: 8 }}
+          >
+            复制配置路径
+          </Button>
+          <Button
+            size="small"
+            icon={<CopyOutlined />}
+            disabled={!selectedCommandText}
+            onClick={onCopyLaunchCommand}
+            style={{ borderRadius: 8 }}
+          >
+            复制启动命令
+          </Button>
+        </div>
+      </div>
+
+      <div style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center', gap: 12, flexWrap: 'wrap' }}>
+        <div style={{ fontSize: 12, color: overlayTheme.mutedText, lineHeight: 1.6 }}>
+          写入后重启对应客户端即可生效；如果已经是当前路径，会直接显示“已接入”，避免重复接入。
+        </div>
+        <Button
+          type={selectedStatus?.matchesCurrent ? 'default' : 'primary'}
+          onClick={onInstall}
+          loading={loading}
+          disabled={Boolean(selectedStatus?.matchesCurrent)}
+          style={{ borderRadius: 10, fontWeight: 600, minWidth: 180, height: 40 }}
+        >
+          {resolveActionLabel(selectedStatus)}
+        </Button>
+      </div>
+    </div>
+  </div>
+);
+
+export default AIMCPClientInstallPanel;
diff --git a/frontend/src/components/ai/AIMCPServerCard.test.tsx b/frontend/src/components/ai/AIMCPServerCard.test.tsx
new file mode 100644
index 0000000..bb891a8
--- /dev/null
+++ b/frontend/src/components/ai/AIMCPServerCard.test.tsx
@@ -0,0 +1,41 @@
+import React from 'react';
+import { renderToStaticMarkup } from 'react-dom/server';
+import { describe, expect, it } from 'vitest';
+
+import AIMCPServerCard from './AIMCPServerCard';
+import { buildOverlayWorkbenchTheme } from '../../utils/overlayWorkbenchTheme';
+
+describe('AIMCPServerCard', () => {
+  it('renders explicit MCP parameter hints for command, args, and env', () => {
+    const markup = renderToStaticMarkup(
+      <AIMCPServerCard
+        server={{
+          id: 'mcp-1',
+          name: '',
+          transport: 'stdio',
+          command: '',
+          args: [],
+          env: {},
+          enabled: true,
+          timeoutSeconds: 20,
+        }}
+        serverTools={[]}
+        cardBg="#fff"
+        cardBorder="rgba(0,0,0,0.08)"
+        inputBg="#fff"
+        darkMode={false}
+        overlayTheme={buildOverlayWorkbenchTheme(false)}
+        loading={false}
+        onChange={() => {}}
+        onTest={() => {}}
+        onSave={() => {}}
+        onDelete={() => {}}
+      />,
+    );
+
+    expect(markup).toContain('启动命令只填可执行程序本身');
+    expect(markup).toContain('每个参数单独录入一个标签');
+    expect(markup).toContain('每行一个 KEY=VALUE');
+    expect(markup).toContain('当前阶段只支持 stdio');
+  });
+});
diff --git a/frontend/src/components/ai/AIMCPServerCard.tsx b/frontend/src/components/ai/AIMCPServerCard.tsx
new file mode 100644
index 0000000..de57844
--- /dev/null
+++ b/frontend/src/components/ai/AIMCPServerCard.tsx
@@ -0,0 +1,191 @@
+import React from 'react';
+import { Button, Input, Popconfirm, Select } from 'antd';
+import { DeleteOutlined } from '@ant-design/icons';
+
+import type { OverlayWorkbenchTheme } from '../../utils/overlayWorkbenchTheme';
+import type { AIMCPServerConfig, AIMCPToolDescriptor } from '../../types';
+
+interface AIMCPServerCardProps {
+  server: AIMCPServerConfig;
+  serverTools: AIMCPToolDescriptor[];
+  cardBg: string;
+  cardBorder: string;
+  inputBg: string;
+  darkMode: boolean;
+  overlayTheme: OverlayWorkbenchTheme;
+  loading: boolean;
+  onChange: (patch: Partial<AIMCPServerConfig>) => void;
+  onTest: () => void;
+  onSave: () => void;
+  onDelete: () => void;
+}
+
+const labelStyle: React.CSSProperties = {
+  fontSize: 12,
+  fontWeight: 700,
+};
+
+const hintStyle = (mutedText: string): React.CSSProperties => ({
+  fontSize: 12,
+  color: mutedText,
+  lineHeight: 1.6,
+});
+
+const MCP_COMMAND_EXAMPLES = [
+  'uvx mcp-server-fetch',
+  'node server.js --stdio',
+  'python -m your_mcp_server',
+];
+
+const MCPHelpBlock: React.FC<{
+  title: string;
+  description: string;
+  overlayTheme: OverlayWorkbenchTheme;
+  example?: string;
+  children: React.ReactNode;
+}> = ({ title, description, overlayTheme, example, children }) => (
+  <div style={{ display: 'flex', flexDirection: 'column', gap: 6 }}>
+    <div style={labelStyle}>{title}</div>
+    <div style={hintStyle(overlayTheme.mutedText)}>
+      {description}
+      {example ? (
+        <>
+          {' '}例如：<code style={{ fontFamily: 'var(--gn-font-mono)' }}>{example}</code>
+        </>
+      ) : null}
+    </div>
+    {children}
+  </div>
+);
+
+export const AIMCPServerCard: React.FC<AIMCPServerCardProps> = ({
+  server,
+  serverTools,
+  cardBg,
+  cardBorder,
+  inputBg,
+  darkMode,
+  overlayTheme,
+  loading,
+  onChange,
+  onTest,
+  onSave,
+  onDelete,
+}) => (
+  <div style={{ padding: '14px 16px', borderRadius: 14, border: `1px solid ${cardBorder}`, background: cardBg, display: 'flex', flexDirection: 'column', gap: 12 }}>
+    <div style={{ padding: '10px 12px', borderRadius: 10, border: `1px dashed ${cardBorder}`, background: darkMode ? 'rgba(255,255,255,0.03)' : 'rgba(255,255,255,0.7)' }}>
+      <div style={{ ...labelStyle, color: overlayTheme.titleText }}>填写示例</div>
+      <div style={{ ...hintStyle(overlayTheme.mutedText), marginTop: 4 }}>
+        启动命令只填可执行程序本身，不要把参数混在一起。常见形式：
+        {' '}
+        <code style={{ fontFamily: 'var(--gn-font-mono)' }}>{MCP_COMMAND_EXAMPLES.join(' / ')}</code>
+      </div>
+    </div>
+
+    <div style={{ display: 'grid', gridTemplateColumns: 'minmax(0,1fr) 132px', gap: 12 }}>
+      <MCPHelpBlock title="服务名称" description="给这个 MCP 起一个你自己能识别的名字，后面 AI 工具列表里会直接显示。" overlayTheme={overlayTheme} example="Filesystem / Browser / GitHub">
+        <Input
+          value={server.name}
+          onChange={(event) => onChange({ name: event.target.value })}
+          placeholder="服务名称，例如：Filesystem / Browser / GitHub"
+          style={{ borderRadius: 10, background: inputBg, border: `1px solid ${cardBorder}` }}
+        />
+      </MCPHelpBlock>
+      <MCPHelpBlock title="启用状态" description="临时不用可以先禁用，保留配置但不参与 AI 工具发现。" overlayTheme={overlayTheme}>
+        <Select
+          value={server.enabled ? 'enabled' : 'disabled'}
+          onChange={(value) => onChange({ enabled: value === 'enabled' })}
+          options={[{ label: '已启用', value: 'enabled' }, { label: '已禁用', value: 'disabled' }]}
+        />
+      </MCPHelpBlock>
+    </div>
+
+    <div style={{ display: 'grid', gridTemplateColumns: '132px minmax(0,1fr) 132px', gap: 12 }}>
+      <MCPHelpBlock title="传输方式" description="当前阶段只支持 stdio，表示 GoNavi 会在本机启动这个进程，并通过标准输入输出与它通信。" overlayTheme={overlayTheme}>
+        <Select
+          value={server.transport}
+          onChange={(value) => onChange({ transport: value as AIMCPServerConfig['transport'] })}
+          options={[{ label: 'stdio', value: 'stdio' }]}
+        />
+      </MCPHelpBlock>
+      <MCPHelpBlock title="启动命令" description="这里只填命令本身；如果是 node/uvx/python 这类启动器，把脚本名或模块名放到下面的参数里。" overlayTheme={overlayTheme} example="node / uvx / python">
+        <Input
+          value={server.command}
+          onChange={(event) => onChange({ command: event.target.value })}
+          placeholder="启动命令，例如：node / uvx / python"
+          style={{ borderRadius: 10, background: inputBg, border: `1px solid ${cardBorder}` }}
+        />
+      </MCPHelpBlock>
+      <MCPHelpBlock title="超时(秒)" description="工具发现和工具调用单次最多等多久。远端服务或启动慢的脚本可以适当调大。" overlayTheme={overlayTheme} example="20">
+        <Input
+          type="number"
+          min={3}
+          max={120}
+          value={server.timeoutSeconds}
+          onChange={(event) => onChange({ timeoutSeconds: Number(event.target.value) || 20 })}
+          placeholder="超时(秒)"
+          style={{ borderRadius: 10, background: inputBg, border: `1px solid ${cardBorder}` }}
+        />
+      </MCPHelpBlock>
+    </div>
+
+    <MCPHelpBlock title="命令参数" description="每个参数单独录入一个标签；命令本体不要填在这里。比如 node server.js --stdio，要把 server.js 和 --stdio 分开填。" overlayTheme={overlayTheme} example="server.js、--stdio、-m、your_mcp_server">
+      <Select
+        mode="tags"
+        value={server.args || []}
+        onChange={(value) => onChange({ args: value })}
+        placeholder="命令参数，回车录入，例如：server.js、--stdio"
+        style={{ width: '100%' }}
+      />
+    </MCPHelpBlock>
+
+    <MCPHelpBlock title="环境变量" description="每行一个 KEY=VALUE，通常用于 API Key、工作目录、服务地址等配置；不需要时可以留空。" overlayTheme={overlayTheme} example="OPENAI_API_KEY=...">
+      <Input.TextArea
+        rows={3}
+        value={Object.entries(server.env || {}).map(([key, value]) => `${key}=${value}`).join('\n')}
+        onChange={(event) => onChange({
+          env: event.target.value
+            .split(/\r?\n/u)
+            .map((line) => line.trim())
+            .filter(Boolean)
+            .reduce<Record<string, string>>((acc, line) => {
+              const separatorIndex = line.indexOf('=');
+              if (separatorIndex <= 0) {
+                return acc;
+              }
+              const key = line.slice(0, separatorIndex).trim();
+              if (!key) {
+                return acc;
+              }
+              acc[key] = line.slice(separatorIndex + 1);
+              return acc;
+            }, {}),
+        })}
+        placeholder={"环境变量，每行一个 KEY=VALUE，例如：\nOPENAI_API_KEY=...\nGITHUB_TOKEN=..."}
+        style={{ borderRadius: 10, background: inputBg, border: `1px solid ${cardBorder}`, fontFamily: 'var(--gn-font-mono)' }}
+      />
+    </MCPHelpBlock>
+
+    {serverTools.length > 0 && (
+      <div style={{ display: 'flex', flexDirection: 'column', gap: 6 }}>
+        <div style={{ fontSize: 12, fontWeight: 700, color: overlayTheme.titleText }}>已发现工具</div>
+        <div style={{ display: 'flex', flexWrap: 'wrap', gap: 8 }}>
+          {serverTools.map((tool) => (
+            <span key={tool.alias} style={{ padding: '4px 8px', borderRadius: 999, background: darkMode ? 'rgba(255,255,255,0.06)' : 'rgba(0,0,0,0.04)', fontSize: 12, color: overlayTheme.mutedText }}>
+              {tool.alias}
+            </span>
+          ))}
+        </div>
+      </div>
+    )}
+    <div style={{ display: 'flex', justifyContent: 'flex-end', gap: 8 }}>
+      <Button onClick={onTest} loading={loading} style={{ borderRadius: 10 }}>测试工具发现</Button>
+      <Button type="primary" onClick={onSave} loading={loading} style={{ borderRadius: 10, fontWeight: 600 }}>保存</Button>
+      <Popconfirm title="删除这个 MCP 服务？" okText="删除" cancelText="取消" onConfirm={onDelete}>
+        <Button danger icon={<DeleteOutlined />} style={{ borderRadius: 10 }}>删除</Button>
+      </Popconfirm>
+    </div>
+  </div>
+);
+
+export default AIMCPServerCard;
diff --git a/frontend/src/components/ai/AIMessageBubble.tsx b/frontend/src/components/ai/AIMessageBubble.tsx
index f7b8999..ab7ec5b 100644
--- a/frontend/src/components/ai/AIMessageBubble.tsx
+++ b/frontend/src/components/ai/AIMessageBubble.tsx
@@ -496,6 +496,12 @@ const AIToolCallingBlock: React.FC<{ tool_calls: AIToolCall[]; loading: boolean;
         if (fname === 'get_connections') return '获取可用连接信息';
         if (fname === 'get_databases') return '扫描数据库列表';
         if (fname === 'get_tables') return '分析表结构信息';
+        if (fname === 'get_columns') return '核对真实字段定义';
+        if (fname === 'get_indexes') return '检查索引定义';
+        if (fname === 'get_foreign_keys') return '梳理外键关系';
+        if (fname === 'get_triggers') return '检查触发器逻辑';
+        if (fname === 'get_table_ddl') return '提取建表语句';
+        if (fname === 'execute_sql') return '执行只读 SQL 验证';
         return fname;
     };
 
diff --git a/frontend/src/utils/aiToolRegistry.ts b/frontend/src/utils/aiToolRegistry.ts
index 5e36e1c..163d42f 100644
--- a/frontend/src/utils/aiToolRegistry.ts
+++ b/frontend/src/utils/aiToolRegistry.ts
@@ -106,6 +106,81 @@ export const BUILTIN_AI_TOOL_INFO: AIBuiltinToolInfo[] = [
       },
     },
   },
+  {
+    name: "get_indexes",
+    icon: "🧭",
+    desc: "获取指定表的索引定义",
+    detail:
+      "传入 connectionId、dbName 和 tableName，返回索引名、索引列、唯一性和索引类型。AI 在做慢 SQL 分析、索引优化和执行计划推断时应优先调用。",
+    params: "connectionId, dbName, tableName",
+    tool: {
+      type: "function",
+      function: {
+        name: "get_indexes",
+        description:
+          "获取指定表的索引定义，包括索引名、字段顺序、唯一性和索引类型。适用于慢 SQL 分析、索引优化建议和确认现有索引覆盖情况。",
+        parameters: {
+          type: "object",
+          properties: {
+            connectionId: { type: "string", description: "连接ID" },
+            dbName: { type: "string", description: "数据库名" },
+            tableName: { type: "string", description: "表名" },
+          },
+          required: ["connectionId", "dbName", "tableName"],
+        },
+      },
+    },
+  },
+  {
+    name: "get_foreign_keys",
+    icon: "🧬",
+    desc: "获取指定表的外键关系",
+    detail:
+      "传入 connectionId、dbName 和 tableName，返回当前表到其他表的外键映射。AI 在推断表关系、生成联表 SQL 和评审数据一致性时可直接使用。",
+    params: "connectionId, dbName, tableName",
+    tool: {
+      type: "function",
+      function: {
+        name: "get_foreign_keys",
+        description:
+          "获取指定表的外键关系，包括本表字段、引用表、引用字段和约束名。适用于联表路径分析、ER 关系梳理和约束检查。",
+        parameters: {
+          type: "object",
+          properties: {
+            connectionId: { type: "string", description: "连接ID" },
+            dbName: { type: "string", description: "数据库名" },
+            tableName: { type: "string", description: "表名" },
+          },
+          required: ["connectionId", "dbName", "tableName"],
+        },
+      },
+    },
+  },
+  {
+    name: "get_triggers",
+    icon: "⏱️",
+    desc: "获取指定表的触发器定义",
+    detail:
+      "传入 connectionId、dbName 和 tableName，返回触发器名、触发时机、事件类型和语句体。AI 在分析隐式写入、副作用和审计逻辑时可直接查看。",
+    params: "connectionId, dbName, tableName",
+    tool: {
+      type: "function",
+      function: {
+        name: "get_triggers",
+        description:
+          "获取指定表的触发器定义，包括触发时机、事件和触发语句。适用于排查隐式数据变更、审计逻辑和表级副作用。",
+        parameters: {
+          type: "object",
+          properties: {
+            connectionId: { type: "string", description: "连接ID" },
+            dbName: { type: "string", description: "数据库名" },
+            tableName: { type: "string", description: "表名" },
+          },
+          required: ["connectionId", "dbName", "tableName"],
+        },
+      },
+    },
+  },
   {
     name: "get_table_ddl",
     icon: "📝",
diff --git a/frontend/wailsjs/go/models.ts b/frontend/wailsjs/go/models.ts
index 6c34e4a..8ebda81 100755
--- a/frontend/wailsjs/go/models.ts
+++ b/frontend/wailsjs/go/models.ts
@@ -1320,3 +1320,4 @@ export namespace sync {
 	}
 
 }
+
diff --git a/internal/mcpserver/backend.go b/internal/mcpserver/backend.go
index 6923f90..7bee96a 100644
--- a/internal/mcpserver/backend.go
+++ b/internal/mcpserver/backend.go
@@ -19,6 +19,9 @@ type Backend interface {
 	DBGetDatabases(config connection.ConnectionConfig) connection.QueryResult
 	DBGetTables(config connection.ConnectionConfig, dbName string) connection.QueryResult
 	DBGetColumns(config connection.ConnectionConfig, dbName string, tableName string) connection.QueryResult
+	DBGetIndexes(config connection.ConnectionConfig, dbName string, tableName string) connection.QueryResult
+	DBGetForeignKeys(config connection.ConnectionConfig, dbName string, tableName string) connection.QueryResult
+	DBGetTriggers(config connection.ConnectionConfig, dbName string, tableName string) connection.QueryResult
 	DBShowCreateTable(config connection.ConnectionConfig, dbName string, tableName string) connection.QueryResult
 	DBQueryMulti(config connection.ConnectionConfig, dbName string, query string, queryID string) connection.QueryResult
 	InspectSQL(dbType string, sql string) appcore.SQLInspection
@@ -70,6 +73,18 @@ func (b *AppBackend) DBGetColumns(config connection.ConnectionConfig, dbName str
 	return b.app.DBGetColumns(config, dbName, tableName)
 }
 
+func (b *AppBackend) DBGetIndexes(config connection.ConnectionConfig, dbName string, tableName string) connection.QueryResult {
+	return b.app.DBGetIndexes(config, dbName, tableName)
+}
+
+func (b *AppBackend) DBGetForeignKeys(config connection.ConnectionConfig, dbName string, tableName string) connection.QueryResult {
+	return b.app.DBGetForeignKeys(config, dbName, tableName)
+}
+
+func (b *AppBackend) DBGetTriggers(config connection.ConnectionConfig, dbName string, tableName string) connection.QueryResult {
+	return b.app.DBGetTriggers(config, dbName, tableName)
+}
+
 func (b *AppBackend) DBShowCreateTable(config connection.ConnectionConfig, dbName string, tableName string) connection.QueryResult {
 	return b.app.DBShowCreateTable(config, dbName, tableName)
 }
diff --git a/internal/mcpserver/server.go b/internal/mcpserver/server.go
index b7a79e5..89b2d43 100644
--- a/internal/mcpserver/server.go
+++ b/internal/mcpserver/server.go
@@ -35,6 +35,21 @@ func NewServer(backend Backend) *mcp.Server {
 		Description: "根据 connectionId、可选 dbName、tableName 获取字段定义。",
 	}, service.GetColumns)
 
+	mcp.AddTool(server, &mcp.Tool{
+		Name:        "get_indexes",
+		Description: "根据 connectionId、可选 dbName、tableName 获取索引定义。",
+	}, service.GetIndexes)
+
+	mcp.AddTool(server, &mcp.Tool{
+		Name:        "get_foreign_keys",
+		Description: "根据 connectionId、可选 dbName、tableName 获取外键关系。",
+	}, service.GetForeignKeys)
+
+	mcp.AddTool(server, &mcp.Tool{
+		Name:        "get_triggers",
+		Description: "根据 connectionId、可选 dbName、tableName 获取触发器定义。",
+	}, service.GetTriggers)
+
 	mcp.AddTool(server, &mcp.Tool{
 		Name:        "get_table_ddl",
 		Description: "根据 connectionId、可选 dbName、tableName 获取建表或建视图语句。",
diff --git a/internal/mcpserver/service.go b/internal/mcpserver/service.go
index 50eaaf4..7268bb7 100644
--- a/internal/mcpserver/service.go
+++ b/internal/mcpserver/service.go
@@ -88,6 +88,27 @@ type getColumnsResult struct {
 	Columns      []connection.ColumnDefinition `json:"columns"`
 }
 
+type getIndexesResult struct {
+	ConnectionID string                       `json:"connectionId"`
+	DBName       string                       `json:"dbName,omitempty"`
+	TableName    string                       `json:"tableName"`
+	Indexes      []connection.IndexDefinition `json:"indexes"`
+}
+
+type getForeignKeysResult struct {
+	ConnectionID string                            `json:"connectionId"`
+	DBName       string                            `json:"dbName,omitempty"`
+	TableName    string                            `json:"tableName"`
+	ForeignKeys  []connection.ForeignKeyDefinition `json:"foreignKeys"`
+}
+
+type getTriggersResult struct {
+	ConnectionID string                         `json:"connectionId"`
+	DBName       string                         `json:"dbName,omitempty"`
+	TableName    string                         `json:"tableName"`
+	Triggers     []connection.TriggerDefinition `json:"triggers"`
+}
+
 type getTableDDLResult struct {
 	ConnectionID string `json:"connectionId"`
 	DBName       string `json:"dbName,omitempty"`
@@ -241,6 +262,105 @@ func (s *Service) GetColumns(ctx context.Context, req *mcp.CallToolRequest, args
 	}, nil
 }
 
+func (s *Service) GetIndexes(ctx context.Context, req *mcp.CallToolRequest, args tableArgs) (*mcp.CallToolResult, getIndexesResult, error) {
+	_ = ctx
+	_ = req
+
+	view, errResult := s.resolveConnection(args.ConnectionID)
+	if errResult != nil {
+		return errResult, getIndexesResult{}, nil
+	}
+
+	tableName := strings.TrimSpace(args.TableName)
+	if tableName == "" {
+		return toolError("tableName 不能为空"), getIndexesResult{}, nil
+	}
+
+	dbName := effectiveDBName(args.DBName, view.Config)
+	queryResult := s.backend.DBGetIndexes(view.Config, dbName, tableName)
+	if !queryResult.Success {
+		return toolError("获取索引定义失败: %s", strings.TrimSpace(queryResult.Message)), getIndexesResult{}, nil
+	}
+
+	indexes, err := decodeIndexes(queryResult.Data)
+	if err != nil {
+		return toolError("解析索引定义失败: %v", err), getIndexesResult{}, nil
+	}
+
+	return successResult(), getIndexesResult{
+		ConnectionID: view.ID,
+		DBName:       dbName,
+		TableName:    tableName,
+		Indexes:      ensureNonNilIndexes(indexes),
+	}, nil
+}
+
+func (s *Service) GetForeignKeys(ctx context.Context, req *mcp.CallToolRequest, args tableArgs) (*mcp.CallToolResult, getForeignKeysResult, error) {
+	_ = ctx
+	_ = req
+
+	view, errResult := s.resolveConnection(args.ConnectionID)
+	if errResult != nil {
+		return errResult, getForeignKeysResult{}, nil
+	}
+
+	tableName := strings.TrimSpace(args.TableName)
+	if tableName == "" {
+		return toolError("tableName 不能为空"), getForeignKeysResult{}, nil
+	}
+
+	dbName := effectiveDBName(args.DBName, view.Config)
+	queryResult := s.backend.DBGetForeignKeys(view.Config, dbName, tableName)
+	if !queryResult.Success {
+		return toolError("获取外键关系失败: %s", strings.TrimSpace(queryResult.Message)), getForeignKeysResult{}, nil
+	}
+
+	foreignKeys, err := decodeForeignKeys(queryResult.Data)
+	if err != nil {
+		return toolError("解析外键关系失败: %v", err), getForeignKeysResult{}, nil
+	}
+
+	return successResult(), getForeignKeysResult{
+		ConnectionID: view.ID,
+		DBName:       dbName,
+		TableName:    tableName,
+		ForeignKeys:  ensureNonNilForeignKeys(foreignKeys),
+	}, nil
+}
+
+func (s *Service) GetTriggers(ctx context.Context, req *mcp.CallToolRequest, args tableArgs) (*mcp.CallToolResult, getTriggersResult, error) {
+	_ = ctx
+	_ = req
+
+	view, errResult := s.resolveConnection(args.ConnectionID)
+	if errResult != nil {
+		return errResult, getTriggersResult{}, nil
+	}
+
+	tableName := strings.TrimSpace(args.TableName)
+	if tableName == "" {
+		return toolError("tableName 不能为空"), getTriggersResult{}, nil
+	}
+
+	dbName := effectiveDBName(args.DBName, view.Config)
+	queryResult := s.backend.DBGetTriggers(view.Config, dbName, tableName)
+	if !queryResult.Success {
+		return toolError("获取触发器定义失败: %s", strings.TrimSpace(queryResult.Message)), getTriggersResult{}, nil
+	}
+
+	triggers, err := decodeTriggers(queryResult.Data)
+	if err != nil {
+		return toolError("解析触发器定义失败: %v", err), getTriggersResult{}, nil
+	}
+
+	return successResult(), getTriggersResult{
+		ConnectionID: view.ID,
+		DBName:       dbName,
+		TableName:    tableName,
+		Triggers:     ensureNonNilTriggers(triggers),
+	}, nil
+}
+
 func (s *Service) GetTableDDL(ctx context.Context, req *mcp.CallToolRequest, args tableArgs) (*mcp.CallToolResult, getTableDDLResult, error) {
 	_ = ctx
 	_ = req
@@ -457,6 +577,51 @@ func decodeColumns(data interface{}) ([]connection.ColumnDefinition, error) {
 	}
 }
 
+func decodeIndexes(data interface{}) ([]connection.IndexDefinition, error) {
+	switch indexes := data.(type) {
+	case nil:
+		return []connection.IndexDefinition{}, nil
+	case []connection.IndexDefinition:
+		return ensureNonNilIndexes(append([]connection.IndexDefinition(nil), indexes...)), nil
+	default:
+		var decoded []connection.IndexDefinition
+		if err := remarshal(data, &decoded); err != nil {
+			return nil, err
+		}
+		return ensureNonNilIndexes(decoded), nil
+	}
+}
+
+func decodeForeignKeys(data interface{}) ([]connection.ForeignKeyDefinition, error) {
+	switch foreignKeys := data.(type) {
+	case nil:
+		return []connection.ForeignKeyDefinition{}, nil
+	case []connection.ForeignKeyDefinition:
+		return ensureNonNilForeignKeys(append([]connection.ForeignKeyDefinition(nil), foreignKeys...)), nil
+	default:
+		var decoded []connection.ForeignKeyDefinition
+		if err := remarshal(data, &decoded); err != nil {
+			return nil, err
+		}
+		return ensureNonNilForeignKeys(decoded), nil
+	}
+}
+
+func decodeTriggers(data interface{}) ([]connection.TriggerDefinition, error) {
+	switch triggers := data.(type) {
+	case nil:
+		return []connection.TriggerDefinition{}, nil
+	case []connection.TriggerDefinition:
+		return ensureNonNilTriggers(append([]connection.TriggerDefinition(nil), triggers...)), nil
+	default:
+		var decoded []connection.TriggerDefinition
+		if err := remarshal(data, &decoded); err != nil {
+			return nil, err
+		}
+		return ensureNonNilTriggers(decoded), nil
+	}
+}
+
 func decodeString(data interface{}) (string, error) {
 	switch value := data.(type) {
 	case nil:
@@ -551,6 +716,27 @@ func ensureNonNilColumns(items []connection.ColumnDefinition) []connection.Colum
 	return items
 }
 
+func ensureNonNilIndexes(items []connection.IndexDefinition) []connection.IndexDefinition {
+	if items == nil {
+		return []connection.IndexDefinition{}
+	}
+	return items
+}
+
+func ensureNonNilForeignKeys(items []connection.ForeignKeyDefinition) []connection.ForeignKeyDefinition {
+	if items == nil {
+		return []connection.ForeignKeyDefinition{}
+	}
+	return items
+}
+
+func ensureNonNilTriggers(items []connection.TriggerDefinition) []connection.TriggerDefinition {
+	if items == nil {
+		return []connection.TriggerDefinition{}
+	}
+	return items
+}
+
 func ensureNonNilRows(items []map[string]interface{}) []map[string]interface{} {
 	if items == nil {
 		return []map[string]interface{}{}
diff --git a/internal/mcpserver/service_test.go b/internal/mcpserver/service_test.go
index d8d5fc7..0fcd678 100644
--- a/internal/mcpserver/service_test.go
+++ b/internal/mcpserver/service_test.go
@@ -19,6 +19,9 @@ type fakeBackend struct {
 	databasesResult     connection.QueryResult
 	tablesResult        connection.QueryResult
 	columnsResult       connection.QueryResult
+	indexesResult       connection.QueryResult
+	foreignKeysResult   connection.QueryResult
+	triggersResult      connection.QueryResult
 	ddlResult           connection.QueryResult
 	queryResult         connection.QueryResult
 	inspection          appcore.SQLInspection
@@ -50,6 +53,18 @@ func (f *fakeBackend) DBGetColumns(config connection.ConnectionConfig, dbName st
 	return f.columnsResult
 }
 
+func (f *fakeBackend) DBGetIndexes(config connection.ConnectionConfig, dbName string, tableName string) connection.QueryResult {
+	return f.indexesResult
+}
+
+func (f *fakeBackend) DBGetForeignKeys(config connection.ConnectionConfig, dbName string, tableName string) connection.QueryResult {
+	return f.foreignKeysResult
+}
+
+func (f *fakeBackend) DBGetTriggers(config connection.ConnectionConfig, dbName string, tableName string) connection.QueryResult {
+	return f.triggersResult
+}
+
 func (f *fakeBackend) DBShowCreateTable(config connection.ConnectionConfig, dbName string, tableName string) connection.QueryResult {
 	return f.ddlResult
 }
@@ -114,6 +129,108 @@ func TestGetConnectionsReturnsSavedConnectionSummaries(t *testing.T) {
 	}
 }
 
+func TestGetIndexesReturnsIndexDefinitions(t *testing.T) {
+	backend := &fakeBackend{
+		editableConnection: connection.SavedConnectionView{
+			ID: "mysql-main",
+			Config: connection.ConnectionConfig{
+				Type:     "mysql",
+				Database: "app",
+			},
+		},
+		indexesResult: connection.QueryResult{
+			Success: true,
+			Data: []connection.IndexDefinition{
+				{Name: "idx_users_email", ColumnName: "email", NonUnique: 0, SeqInIndex: 1, IndexType: "BTREE"},
+			},
+		},
+	}
+
+	service := NewService(backend)
+	result, out, err := service.GetIndexes(context.Background(), nil, tableArgs{
+		ConnectionID: "mysql-main",
+		DBName:       "app",
+		TableName:    "users",
+	})
+	if err != nil {
+		t.Fatalf("GetIndexes returned error: %v", err)
+	}
+	if result == nil || result.IsError {
+		t.Fatalf("expected success result, got %#v", result)
+	}
+	if len(out.Indexes) != 1 || out.Indexes[0].Name != "idx_users_email" {
+		t.Fatalf("unexpected indexes output: %#v", out)
+	}
+}
+
+func TestGetForeignKeysReturnsForeignKeyDefinitions(t *testing.T) {
+	backend := &fakeBackend{
+		editableConnection: connection.SavedConnectionView{
+			ID: "mysql-main",
+			Config: connection.ConnectionConfig{
+				Type:     "mysql",
+				Database: "app",
+			},
+		},
+		foreignKeysResult: connection.QueryResult{
+			Success: true,
+			Data: []connection.ForeignKeyDefinition{
+				{Name: "fk_orders_user_id", ColumnName: "user_id", RefTableName: "users", RefColumnName: "id", ConstraintName: "fk_orders_user_id"},
+			},
+		},
+	}
+
+	service := NewService(backend)
+	result, out, err := service.GetForeignKeys(context.Background(), nil, tableArgs{
+		ConnectionID: "mysql-main",
+		DBName:       "app",
+		TableName:    "orders",
+	})
+	if err != nil {
+		t.Fatalf("GetForeignKeys returned error: %v", err)
+	}
+	if result == nil || result.IsError {
+		t.Fatalf("expected success result, got %#v", result)
+	}
+	if len(out.ForeignKeys) != 1 || out.ForeignKeys[0].RefTableName != "users" {
+		t.Fatalf("unexpected foreign keys output: %#v", out)
+	}
+}
+
+func TestGetTriggersReturnsTriggerDefinitions(t *testing.T) {
+	backend := &fakeBackend{
+		editableConnection: connection.SavedConnectionView{
+			ID: "mysql-main",
+			Config: connection.ConnectionConfig{
+				Type:     "mysql",
+				Database: "app",
+			},
+		},
+		triggersResult: connection.QueryResult{
+			Success: true,
+			Data: []connection.TriggerDefinition{
+				{Name: "trg_orders_audit", Timing: "AFTER", Event: "INSERT", Statement: "INSERT INTO audit_log ..."},
+			},
+		},
+	}
+
+	service := NewService(backend)
+	result, out, err := service.GetTriggers(context.Background(), nil, tableArgs{
+		ConnectionID: "mysql-main",
+		DBName:       "app",
+		TableName:    "orders",
+	})
+	if err != nil {
+		t.Fatalf("GetTriggers returned error: %v", err)
+	}
+	if result == nil || result.IsError {
+		t.Fatalf("expected success result, got %#v", result)
+	}
+	if len(out.Triggers) != 1 || out.Triggers[0].Name != "trg_orders_audit" {
+		t.Fatalf("unexpected triggers output: %#v", out)
+	}
+}
+
 func TestExecuteSQLRejectsMutatingStatementsWithoutAllowMutating(t *testing.T) {
 	backend := &fakeBackend{
 		editableConnection: connection.SavedConnectionView{