diff --git a/frontend/src/components/ai/AIMCPServerFormPanel.tsx b/frontend/src/components/ai/AIMCPServerFormPanel.tsx
index 147c877..c722dbc 100644
--- a/frontend/src/components/ai/AIMCPServerFormPanel.tsx
+++ b/frontend/src/components/ai/AIMCPServerFormPanel.tsx
@@ -8,6 +8,7 @@ import type { ParsedMCPEnvDraft } from '../../utils/mcpEnvDraft';
 import type { MCPServerDraftValidation } from '../../utils/mcpServerValidation';
 import AIMCPHelpBlock, { buildMCPHintStyle, mcpLabelStyle } from './AIMCPHelpBlock';
 import AIMCPServerValidationPanel from './AIMCPServerValidationPanel';
+import AIMCPToolSchemaSummary from './AIMCPToolSchemaSummary';
 
 interface AIMCPServerFormPanelProps {
   server: AIMCPServerConfig;
@@ -166,18 +167,12 @@ const AIMCPServerFormPanel: React.FC<AIMCPServerFormPanelProps> = ({
       overlayTheme={overlayTheme}
     />
 
-    {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>
-    )}
+    <AIMCPToolSchemaSummary
+      tools={serverTools}
+      cardBorder={cardBorder}
+      darkMode={darkMode}
+      overlayTheme={overlayTheme}
+    />
 
     <div style={{ padding: '10px 12px', borderRadius: 10, border: `1px solid ${cardBorder}`, background: darkMode ? 'rgba(255,255,255,0.03)' : 'rgba(255,255,255,0.72)' }}>
       <div style={{ ...mcpLabelStyle, color: overlayTheme.titleText }}>操作说明</div>
diff --git a/frontend/src/components/ai/AIMCPToolSchemaSummary.tsx b/frontend/src/components/ai/AIMCPToolSchemaSummary.tsx
new file mode 100644
index 0000000..4f66b82
--- /dev/null
+++ b/frontend/src/components/ai/AIMCPToolSchemaSummary.tsx
@@ -0,0 +1,145 @@
+import React from 'react';
+
+import type { AIMCPToolDescriptor } from '../../types';
+import type { OverlayWorkbenchTheme } from '../../utils/overlayWorkbenchTheme';
+import { buildMCPHintStyle } from './AIMCPHelpBlock';
+
+const MAX_PARAMETER_PREVIEW = 6;
+
+type JSONSchemaRecord = Record<string, any>;
+
+const isRecord = (value: unknown): value is JSONSchemaRecord =>
+  Boolean(value) && typeof value === 'object' && !Array.isArray(value);
+
+const readSchemaType = (schema: JSONSchemaRecord): string => {
+  if (Array.isArray(schema.type)) {
+    return schema.type.map((item) => String(item)).filter(Boolean).join('|') || 'unknown';
+  }
+  if (typeof schema.type === 'string' && schema.type.trim()) {
+    return schema.type.trim();
+  }
+  if (Array.isArray(schema.enum)) {
+    return 'enum';
+  }
+  if (isRecord(schema.properties)) {
+    return 'object';
+  }
+  if (isRecord(schema.items)) {
+    return 'array';
+  }
+  return 'unknown';
+};
+
+const readRequiredSet = (schema: JSONSchemaRecord): Set<string> => new Set(
+  Array.isArray(schema.required)
+    ? schema.required.map((item) => String(item)).filter(Boolean)
+    : [],
+);
+
+const summarizeToolParameters = (tool: AIMCPToolDescriptor) => {
+  const inputSchema = isRecord(tool.inputSchema) ? tool.inputSchema : {};
+  const properties = isRecord(inputSchema.properties) ? inputSchema.properties : {};
+  const requiredSet = readRequiredSet(inputSchema);
+  const parameters = Object.entries(properties).map(([name, rawSchema]) => {
+    const schema = isRecord(rawSchema) ? rawSchema : {};
+    return {
+      name,
+      required: requiredSet.has(name),
+      type: readSchemaType(schema),
+      description: String(schema.description || schema.title || '').trim(),
+    };
+  });
+
+  return {
+    hasInputSchema: Object.keys(inputSchema).length > 0,
+    parameters,
+    requiredCount: parameters.filter((item) => item.required).length,
+    truncated: parameters.length > MAX_PARAMETER_PREVIEW,
+  };
+};
+
+interface AIMCPToolSchemaSummaryProps {
+  tools: AIMCPToolDescriptor[];
+  cardBorder: string;
+  darkMode: boolean;
+  overlayTheme: OverlayWorkbenchTheme;
+}
+
+const AIMCPToolSchemaSummary: React.FC<AIMCPToolSchemaSummaryProps> = ({
+  tools,
+  cardBorder,
+  darkMode,
+  overlayTheme,
+}) => {
+  if (tools.length === 0) {
+    return null;
+  }
+
+  return (
+    <div style={{ display: 'flex', flexDirection: 'column', gap: 8 }}>
+      <div style={{ fontSize: 12, fontWeight: 700, color: overlayTheme.titleText }}>已发现工具和参数提示</div>
+      <div style={{ display: 'grid', gridTemplateColumns: 'repeat(auto-fit, minmax(230px, 1fr))', gap: 8 }}>
+        {tools.map((tool) => {
+          const summary = summarizeToolParameters(tool);
+          const previewParameters = summary.parameters.slice(0, MAX_PARAMETER_PREVIEW);
+          return (
+            <div
+              key={tool.alias}
+              style={{
+                padding: '10px 12px',
+                borderRadius: 10,
+                border: `1px solid ${cardBorder}`,
+                background: darkMode ? 'rgba(255,255,255,0.025)' : 'rgba(255,255,255,0.78)',
+                display: 'flex',
+                flexDirection: 'column',
+                gap: 6,
+              }}
+            >
+              <div style={{ fontSize: 12, fontWeight: 700, color: overlayTheme.titleText, overflowWrap: 'anywhere' }}>
+                {tool.alias}
+              </div>
+              {tool.description ? (
+                <div style={buildMCPHintStyle(overlayTheme.mutedText)}>{tool.description}</div>
+              ) : null}
+              <div style={buildMCPHintStyle(overlayTheme.mutedText)}>
+                {summary.hasInputSchema
+                  ? `参数 ${summary.parameters.length} 个，必填 ${summary.requiredCount} 个；星号表示必填。`
+                  : '未声明 inputSchema，调用参数需参考服务文档或用 /mcptool 继续查看。'}
+              </div>
+              {previewParameters.length > 0 ? (
+                <div style={{ display: 'flex', flexWrap: 'wrap', gap: 6 }}>
+                  {previewParameters.map((parameter) => (
+                    <span
+                      key={parameter.name}
+                      title={parameter.description || undefined}
+                      style={{
+                        padding: '3px 7px',
+                        borderRadius: 999,
+                        background: parameter.required
+                          ? (darkMode ? 'rgba(59,130,246,0.18)' : 'rgba(37,99,235,0.10)')
+                          : (darkMode ? 'rgba(255,255,255,0.06)' : 'rgba(15,23,42,0.05)'),
+                        color: parameter.required ? '#2563eb' : overlayTheme.mutedText,
+                        fontSize: 12,
+                        fontFamily: 'var(--gn-font-mono)',
+                      }}
+                    >
+                      {parameter.name}
+                      {parameter.required ? '*' : ''}: {parameter.type}
+                    </span>
+                  ))}
+                  {summary.truncated ? (
+                    <span style={{ ...buildMCPHintStyle(overlayTheme.mutedText), padding: '3px 0' }}>
+                      还有 {summary.parameters.length - MAX_PARAMETER_PREVIEW} 个参数，使用 /mcptool 查看完整 schema
+                    </span>
+                  ) : null}
+                </div>
+              ) : null}
+            </div>
+          );
+        })}
+      </div>
+    </div>
+  );
+};
+
+export default AIMCPToolSchemaSummary;
diff --git a/frontend/src/components/ai/AISettingsMCPSection.test.tsx b/frontend/src/components/ai/AISettingsMCPSection.test.tsx
index 12505e6..307354e 100644
--- a/frontend/src/components/ai/AISettingsMCPSection.test.tsx
+++ b/frontend/src/components/ai/AISettingsMCPSection.test.tsx
@@ -138,6 +138,31 @@ describe('AISettingsMCPSection', () => {
             enabled: true,
             timeoutSeconds: 20,
           }],
+          mcpTools: [
+            {
+              alias: 'execute_sql',
+              serverId: 'mcp-local',
+              serverName: 'Local MCP',
+              originalName: 'execute_sql',
+              description: '执行 SQL',
+              inputSchema: {
+                type: 'object',
+                required: ['connectionId', 'sql'],
+                properties: {
+                  connectionId: { type: 'string', description: '连接 ID' },
+                  dbName: { type: 'string', description: '数据库名' },
+                  sql: { type: 'string', description: 'SQL 文本' },
+                  allowMutating: { type: 'boolean', description: '显式允许写操作' },
+                },
+              },
+            },
+            {
+              alias: 'legacy_tool',
+              serverId: 'mcp-local',
+              serverName: 'Local MCP',
+              originalName: 'legacy_tool',
+            },
+          ],
         })}
       />,
     );
@@ -147,6 +172,14 @@ describe('AISettingsMCPSection', () => {
     expect(markup).toContain('认证失败、401 或 403');
     expect(markup).toContain('当前只支持 stdio');
     expect(markup).toContain('不要把密钥写进聊天内容');
+    expect(markup).toContain('已发现工具和参数提示');
+    expect(markup).toContain('execute_sql');
+    expect(markup).toContain('参数 4 个，必填 2 个');
+    expect(markup).toContain('connectionId*: string');
+    expect(markup).toContain('sql*: string');
+    expect(markup).toContain('allowMutating: boolean');
+    expect(markup).toContain('legacy_tool');
+    expect(markup).toContain('未声明 inputSchema');
   });
 
   it('seeds a new draft when a launch template is selected', () => {