diff --git a/frontend/src/components/ai/AIBuiltinToolsCatalog.test.tsx b/frontend/src/components/ai/AIBuiltinToolsCatalog.test.tsx
index 2c93d98..cbeeaf1 100644
--- a/frontend/src/components/ai/AIBuiltinToolsCatalog.test.tsx
+++ b/frontend/src/components/ai/AIBuiltinToolsCatalog.test.tsx
@@ -28,6 +28,8 @@ describe('AIBuiltinToolsCatalog', () => {
     expect(markup).toContain('inspect_database_bundle');
     expect(markup).toContain('查看 AI 当前能力');
     expect(markup).toContain('inspect_ai_runtime');
+    expect(markup).toContain('排查供应商与模型');
+    expect(markup).toContain('inspect_ai_providers');
     expect(markup).toContain('排查 MCP 接入状态');
     expect(markup).toContain('inspect_mcp_setup');
     expect(markup).toContain('查看当前提示与 Skills');
diff --git a/frontend/src/components/ai/AIBuiltinToolsCatalog.tsx b/frontend/src/components/ai/AIBuiltinToolsCatalog.tsx
index 62891ff..907f55c 100644
--- a/frontend/src/components/ai/AIBuiltinToolsCatalog.tsx
+++ b/frontend/src/components/ai/AIBuiltinToolsCatalog.tsx
@@ -42,6 +42,11 @@ const BUILTIN_TOOL_FLOWS = [
     steps: 'inspect_ai_runtime → inspect_ai_context / inspect_current_connection',
     description: '适合先确认当前模型、安全级别、上下文级别、Skills 和 MCP 工具，再决定让 AI 走哪条探针链路。',
   },
+  {
+    title: '排查供应商与模型',
+    steps: 'inspect_ai_providers → inspect_ai_runtime',
+    description: '适合先确认当前到底配置了哪些供应商、哪个在生效、有没有缺密钥或没选模型，再解释为什么 AI 不能发送、为什么模型列表为空。',
+  },
   {
     title: '排查 MCP 接入状态',
     steps: 'inspect_mcp_setup → inspect_ai_runtime',
diff --git a/frontend/src/components/ai/aiLocalToolExecutor.test.ts b/frontend/src/components/ai/aiLocalToolExecutor.test.ts
index 7c7665c..e7cdd17 100644
--- a/frontend/src/components/ai/aiLocalToolExecutor.test.ts
+++ b/frontend/src/components/ai/aiLocalToolExecutor.test.ts
@@ -224,6 +224,60 @@ describe('aiLocalToolExecutor', () => {
     expect(result.content).toContain('"builtinToolCount":');
   });
 
+  it('returns the current ai provider snapshot so the model can inspect provider readiness and model selection', async () => {
+    const result = await executeLocalAIToolCall({
+      toolCall: buildToolCall('inspect_ai_providers', {}),
+      connections: [buildConnection()],
+      mcpTools: [],
+      dynamicModels: ['gpt-5.4', 'gpt-4.1-mini'],
+      toolContextMap: new Map(),
+      runtime: {
+        getDatabases: vi.fn(),
+        getTables: vi.fn(),
+        getAIRuntimeState: vi.fn().mockResolvedValue({
+          activeProviderId: 'provider-1',
+          providers: [
+            {
+              id: 'provider-1',
+              type: 'openai',
+              name: 'OpenAI 主账号',
+              apiKey: '',
+              hasSecret: true,
+              baseUrl: 'https://api.openai.com/v1',
+              model: 'gpt-5.4',
+              models: ['gpt-5.4', 'gpt-4.1'],
+              maxTokens: 32000,
+              temperature: 0.2,
+            },
+            {
+              id: 'provider-2',
+              type: 'custom',
+              name: '自建代理',
+              apiKey: '',
+              hasSecret: false,
+              baseUrl: '',
+              model: '',
+              models: [],
+              headers: {
+                Authorization: 'Bearer secret-token',
+              },
+              maxTokens: 16000,
+              temperature: 0.7,
+            },
+          ],
+        }),
+      },
+    });
+
+    expect(result.success).toBe(true);
+    expect(result.content).toContain('"providerCount":2');
+    expect(result.content).toContain('"missingSecretCount":1');
+    expect(result.content).toContain('"name":"OpenAI 主账号"');
+    expect(result.content).toContain('"name":"自建代理"');
+    expect(result.content).toContain('"issues":["missing_secret","missing_base_url","missing_selected_model","missing_declared_models"]');
+    expect(result.content).not.toContain('secret-token');
+  });
+
   it('returns the current mcp setup snapshot so the model can inspect configured servers and client install state', async () => {
     const result = await executeLocalAIToolCall({
       toolCall: buildToolCall('inspect_mcp_setup', {}),
diff --git a/frontend/src/components/ai/aiProviderInsights.test.ts b/frontend/src/components/ai/aiProviderInsights.test.ts
new file mode 100644
index 0000000..cbf3456
--- /dev/null
+++ b/frontend/src/components/ai/aiProviderInsights.test.ts
@@ -0,0 +1,73 @@
+import { describe, expect, it } from 'vitest';
+
+import type { AIProviderConfig } from '../../types';
+import { buildAIProviderSnapshot } from './aiProviderInsights';
+
+describe('aiProviderInsights', () => {
+  it('returns a sanitized provider snapshot with missing-secret and missing-model diagnostics', () => {
+    const providers: AIProviderConfig[] = [
+      {
+        id: 'provider-1',
+        type: 'openai',
+        name: 'OpenAI 主账号',
+        apiKey: '',
+        hasSecret: true,
+        baseUrl: 'https://api.openai.com/v1',
+        model: 'gpt-5.4',
+        models: ['gpt-5.4', 'gpt-4.1'],
+        maxTokens: 32000,
+        temperature: 0.2,
+      },
+      {
+        id: 'provider-2',
+        type: 'custom',
+        name: '自建代理',
+        apiKey: 'sk-secret',
+        hasSecret: false,
+        baseUrl: '',
+        model: '',
+        models: [],
+        headers: {
+          Authorization: 'Bearer secret-token',
+        },
+        apiFormat: 'openai',
+        maxTokens: 16000,
+        temperature: 0.7,
+      },
+    ];
+
+    const snapshot = buildAIProviderSnapshot({
+      providers,
+      activeProviderId: 'provider-1',
+      dynamicModels: ['gpt-5.4', 'gpt-4.1-mini'],
+    });
+
+    expect(snapshot).toMatchObject({
+      hasActiveProvider: true,
+      providerCount: 2,
+      readyProviderCount: 1,
+      providersNeedingAttentionCount: 1,
+      missingSecretCount: 1,
+      missingSelectedModelCount: 1,
+      missingBaseUrlCount: 1,
+      dynamicModelCount: 2,
+    });
+    expect(snapshot.activeProvider).toMatchObject({
+      id: 'provider-1',
+      name: 'OpenAI 主账号',
+      baseUrlHost: 'api.openai.com',
+      status: 'ready',
+    });
+    expect(snapshot.providers[1]).toMatchObject({
+      id: 'provider-2',
+      hasSecret: false,
+      hasHeaders: true,
+      headerKeys: ['Authorization'],
+      issues: ['missing_secret', 'missing_base_url', 'missing_selected_model', 'missing_declared_models'],
+      status: 'needs_attention',
+    });
+    expect(snapshot.message).toContain('正在使用 OpenAI 主账号');
+    expect(JSON.stringify(snapshot)).not.toContain('apiKey');
+    expect(JSON.stringify(snapshot)).not.toContain('secret-token');
+  });
+});
diff --git a/frontend/src/components/ai/aiProviderInsights.ts b/frontend/src/components/ai/aiProviderInsights.ts
new file mode 100644
index 0000000..999f49b
--- /dev/null
+++ b/frontend/src/components/ai/aiProviderInsights.ts
@@ -0,0 +1,140 @@
+import type { AIProviderConfig } from '../../types';
+
+const DECLARED_MODEL_PREVIEW_LIMIT = 12;
+const DYNAMIC_MODEL_PREVIEW_LIMIT = 20;
+
+const sliceList = <T,>(items: T[], limit: number) => {
+  const list = Array.isArray(items) ? items : [];
+  return {
+    items: list.slice(0, limit),
+    truncated: list.length > limit,
+    total: list.length,
+  };
+};
+
+const trimText = (value: unknown): string => String(value || '').trim();
+
+const hasProviderSecret = (provider: AIProviderConfig): boolean =>
+  provider.hasSecret ?? Boolean(provider.secretRef || provider.apiKey);
+
+const getProviderHost = (baseUrl: string): string => {
+  const normalized = trimText(baseUrl);
+  if (!normalized) {
+    return '';
+  }
+  try {
+    return new URL(normalized).host;
+  } catch {
+    return '';
+  }
+};
+
+const buildProviderIssues = (provider: AIProviderConfig): string[] => {
+  const issues: string[] = [];
+  const hasSecret = hasProviderSecret(provider);
+  const baseUrl = trimText(provider.baseUrl);
+  const model = trimText(provider.model);
+  const declaredModels = Array.isArray(provider.models)
+    ? provider.models.map((item) => trimText(item)).filter(Boolean)
+    : [];
+
+  if (!hasSecret) {
+    issues.push('missing_secret');
+  }
+  if (!baseUrl) {
+    issues.push('missing_base_url');
+  }
+  if (!model) {
+    issues.push('missing_selected_model');
+  }
+  if (declaredModels.length === 0) {
+    issues.push('missing_declared_models');
+  }
+
+  return issues;
+};
+
+export const buildAIProviderSnapshot = (params: {
+  providers?: AIProviderConfig[];
+  activeProviderId?: string | null;
+  dynamicModels?: string[];
+}) => {
+  const providers = Array.isArray(params.providers) ? params.providers : [];
+  const activeProviderId = trimText(params.activeProviderId);
+  const dynamicModelPreview = sliceList(
+    (Array.isArray(params.dynamicModels) ? params.dynamicModels : [])
+      .map((item) => trimText(item))
+      .filter(Boolean),
+    DYNAMIC_MODEL_PREVIEW_LIMIT,
+  );
+
+  const providerSummaries = providers.map((provider) => {
+    const declaredModelPreview = sliceList(
+      (Array.isArray(provider.models) ? provider.models : [])
+        .map((item) => trimText(item))
+        .filter(Boolean),
+      DECLARED_MODEL_PREVIEW_LIMIT,
+    );
+    const headerKeys = Object.keys(provider.headers || {})
+      .map((item) => trimText(item))
+      .filter(Boolean)
+      .sort((left, right) => left.localeCompare(right));
+    const issues = buildProviderIssues(provider);
+
+    return {
+      id: provider.id,
+      name: trimText(provider.name),
+      type: provider.type,
+      apiFormat: trimText(provider.apiFormat) || 'openai',
+      active: provider.id === activeProviderId,
+      baseUrl: trimText(provider.baseUrl),
+      baseUrlHost: getProviderHost(provider.baseUrl),
+      model: trimText(provider.model),
+      declaredModelCount: declaredModelPreview.total,
+      declaredModels: declaredModelPreview.items,
+      declaredModelsTruncated: declaredModelPreview.truncated,
+      hasSecret: hasProviderSecret(provider),
+      hasHeaders: headerKeys.length > 0,
+      headerKeys,
+      maxTokens: Number(provider.maxTokens) || 0,
+      temperature: Number(provider.temperature) || 0,
+      issues,
+      issueCount: issues.length,
+      status: issues.length === 0 ? 'ready' : 'needs_attention',
+    };
+  });
+
+  const activeProvider = providerSummaries.find((provider) => provider.active) || null;
+  const providersNeedingAttention = providerSummaries.filter((provider) => provider.issueCount > 0);
+  const providerHosts = Array.from(
+    new Set(
+      providerSummaries
+        .map((provider) => provider.baseUrlHost)
+        .filter(Boolean),
+    ),
+  ).sort((left, right) => left.localeCompare(right));
+
+  return {
+    hasActiveProvider: Boolean(activeProvider),
+    activeProviderId,
+    activeProvider,
+    providerCount: providerSummaries.length,
+    readyProviderCount: providerSummaries.length - providersNeedingAttention.length,
+    providersNeedingAttentionCount: providersNeedingAttention.length,
+    missingSecretCount: providerSummaries.filter((provider) => provider.issues.includes('missing_secret')).length,
+    missingSelectedModelCount: providerSummaries.filter((provider) => provider.issues.includes('missing_selected_model')).length,
+    missingBaseUrlCount: providerSummaries.filter((provider) => provider.issues.includes('missing_base_url')).length,
+    providers: providerSummaries,
+    providerHosts,
+    dynamicModelCount: dynamicModelPreview.total,
+    dynamicModels: dynamicModelPreview.items,
+    dynamicModelsTruncated: dynamicModelPreview.truncated,
+    message: providerSummaries.length === 0
+      ? '当前没有配置 AI 供应商'
+      : activeProvider
+        ? activeProvider.issueCount > 0
+          ? `当前正在使用 ${activeProvider.name || activeProvider.id}，但还有 ${activeProvider.issueCount} 项待检查`
+          : `当前共配置 ${providerSummaries.length} 个供应商，正在使用 ${activeProvider.name || activeProvider.id}`
+        : `当前已配置 ${providerSummaries.length} 个供应商，但尚未选择活动供应商`,
+  };
+};
diff --git a/frontend/src/components/ai/aiSnapshotInspectionToolExecutor.ts b/frontend/src/components/ai/aiSnapshotInspectionToolExecutor.ts
index b87824e..56ecfaa 100644
--- a/frontend/src/components/ai/aiSnapshotInspectionToolExecutor.ts
+++ b/frontend/src/components/ai/aiSnapshotInspectionToolExecutor.ts
@@ -18,6 +18,7 @@ import { buildAIContextSnapshot } from './aiContextInsights';
 import { buildCurrentConnectionSnapshot } from './aiConnectionInsights';
 import { buildMCPSetupSnapshot } from './aiMCPInsights';
 import { buildAIGuidanceSnapshot } from './aiPromptInsights';
+import { buildAIProviderSnapshot } from './aiProviderInsights';
 import { buildAIRuntimeSnapshot } from './aiRuntimeInsights';
 import {
   buildSavedQueriesSnapshot,
@@ -108,6 +109,19 @@ export async function executeSnapshotInspectionToolCall(
           success: true,
         };
       }
+      case 'inspect_ai_providers': {
+        const runtimeState = typeof runtime?.getAIRuntimeState === 'function'
+          ? await runtime.getAIRuntimeState()
+          : undefined;
+        return {
+          content: JSON.stringify(buildAIProviderSnapshot({
+            providers: Array.isArray(runtimeState?.providers) ? runtimeState.providers : [],
+            activeProviderId: runtimeState?.activeProviderId || '',
+            dynamicModels,
+          })),
+          success: true,
+        };
+      }
       case 'inspect_mcp_setup': {
         const [mcpServers, mcpClientInstallStatuses] = await Promise.all([
           typeof runtime?.getMCPServers === 'function' ? runtime.getMCPServers() : Promise.resolve(undefined),
@@ -210,6 +224,7 @@ export async function executeSnapshotInspectionToolCall(
   } catch (error: any) {
     const label = {
       inspect_ai_runtime: '读取当前 AI 运行状态失败',
+      inspect_ai_providers: '读取当前 AI 供应商配置失败',
       inspect_mcp_setup: '读取 MCP 配置状态失败',
       inspect_ai_guidance: '读取当前 AI 提示与技能配置失败',
       inspect_current_connection: '读取当前连接失败',
diff --git a/frontend/src/components/ai/aiSystemContextMessages.test.ts b/frontend/src/components/ai/aiSystemContextMessages.test.ts
index bec02c2..975c6d1 100644
--- a/frontend/src/components/ai/aiSystemContextMessages.test.ts
+++ b/frontend/src/components/ai/aiSystemContextMessages.test.ts
@@ -68,7 +68,7 @@ describe('buildAISystemContextMessages', () => {
       connections: [connections[0]],
       tabs: [],
       activeTabId: null,
-      availableToolNames: ['inspect_workspace_tabs', 'inspect_ai_runtime', 'inspect_mcp_setup', 'inspect_ai_guidance', 'inspect_ai_context', 'inspect_current_connection', 'inspect_saved_queries', 'inspect_sql_snippets', 'get_columns'],
+      availableToolNames: ['inspect_workspace_tabs', 'inspect_ai_runtime', 'inspect_ai_providers', 'inspect_mcp_setup', 'inspect_ai_guidance', 'inspect_ai_context', 'inspect_current_connection', 'inspect_saved_queries', 'inspect_sql_snippets', 'get_columns'],
       skills,
       userPromptSettings,
     });
@@ -76,6 +76,7 @@ describe('buildAISystemContextMessages', () => {
     const joined = messages.map((message) => message.content).join('\n');
     expect(joined).toContain('inspect_workspace_tabs 盘点当前工作区');
     expect(joined).toContain('inspect_ai_runtime 读取当前 AI 运行状态');
+    expect(joined).toContain('inspect_ai_providers 读取真实供应商配置');
     expect(joined).toContain('inspect_mcp_setup 读取真实 MCP 配置');
     expect(joined).toContain('inspect_ai_guidance 读取真实提示与技能配置');
     expect(joined).toContain('inspect_ai_context 读取当前挂载的表结构上下文');
diff --git a/frontend/src/components/ai/aiSystemContextMessages.ts b/frontend/src/components/ai/aiSystemContextMessages.ts
index b1784a0..01bde15 100644
--- a/frontend/src/components/ai/aiSystemContextMessages.ts
+++ b/frontend/src/components/ai/aiSystemContextMessages.ts
@@ -108,6 +108,19 @@ const appendAIRuntimeInspectionGuidance = (
   });
 };
 
+const appendAIProviderInspectionGuidance = (
+  messages: AISystemContextMessage[],
+  availableToolNames: string[],
+) => {
+  if (!availableToolNames.includes('inspect_ai_providers')) {
+    return;
+  }
+  messages.push({
+    role: 'system',
+    content: '如果用户提到“当前配了哪些供应商”“为什么模型列表为空”“API Key 有没有配”“为什么现在不能发送/没选中模型”，优先调用 inspect_ai_providers 读取真实供应商配置，不要凭记忆猜测。',
+  });
+};
+
 const appendMCPSetupInspectionGuidance = (
   messages: AISystemContextMessage[],
   availableToolNames: string[],
@@ -351,6 +364,7 @@ SELECT * FROM users WHERE status = 1;
     });
   }
   appendAIRuntimeInspectionGuidance(systemMessages, availableToolNames);
+  appendAIProviderInspectionGuidance(systemMessages, availableToolNames);
   appendMCPSetupInspectionGuidance(systemMessages, availableToolNames);
   appendAIGuidanceInspectionGuidance(systemMessages, availableToolNames);
   if (availableToolNames.includes('inspect_current_connection')) {
diff --git a/frontend/src/components/ai/messageBubble/AIMessageStatusBlocks.tsx b/frontend/src/components/ai/messageBubble/AIMessageStatusBlocks.tsx
index 5138ab9..8e64e54 100644
--- a/frontend/src/components/ai/messageBubble/AIMessageStatusBlocks.tsx
+++ b/frontend/src/components/ai/messageBubble/AIMessageStatusBlocks.tsx
@@ -24,6 +24,7 @@ interface AIToolCallingBlockProps {
 
 const TOOL_ACTION_LABELS: Record<string, string> = {
   inspect_ai_runtime: '读取当前 AI 运行状态',
+  inspect_ai_providers: '读取当前 AI 供应商与模型配置',
   inspect_mcp_setup: '读取当前 MCP 配置状态',
   inspect_ai_guidance: '读取当前 AI 提示与技能配置',
   get_connections: '获取可用连接信息',
diff --git a/frontend/src/utils/aiToolRegistry.test.ts b/frontend/src/utils/aiToolRegistry.test.ts
index bf4d426..d715c4f 100644
--- a/frontend/src/utils/aiToolRegistry.test.ts
+++ b/frontend/src/utils/aiToolRegistry.test.ts
@@ -17,6 +17,13 @@ describe('aiToolRegistry', () => {
     expect(info?.tool.function.description).toContain('外部客户端');
   });
 
+  it('registers the ai-provider inspector as a builtin tool', () => {
+    const info = BUILTIN_AI_TOOL_INFO.find((item) => item.name === 'inspect_ai_providers');
+    expect(info).toBeTruthy();
+    expect(info?.desc).toContain('供应商与模型配置');
+    expect(info?.tool.function.description).toContain('模型列表为空');
+  });
+
   it('registers the ai-guidance inspector as a builtin tool', () => {
     const info = BUILTIN_AI_TOOL_INFO.find((item) => item.name === 'inspect_ai_guidance');
     expect(info).toBeTruthy();
@@ -58,6 +65,7 @@ describe('aiToolRegistry', () => {
     }]);
 
     expect(tools.some((item) => item.function.name === 'inspect_ai_runtime')).toBe(true);
+    expect(tools.some((item) => item.function.name === 'inspect_ai_providers')).toBe(true);
     expect(tools.some((item) => item.function.name === 'inspect_mcp_setup')).toBe(true);
     expect(tools.some((item) => item.function.name === 'inspect_ai_guidance')).toBe(true);
     expect(tools.some((item) => item.function.name === 'inspect_current_connection')).toBe(true);
diff --git a/frontend/src/utils/aiToolRegistry.ts b/frontend/src/utils/aiToolRegistry.ts
index ab237de..9b58935 100644
--- a/frontend/src/utils/aiToolRegistry.ts
+++ b/frontend/src/utils/aiToolRegistry.ts
@@ -326,6 +326,23 @@ export const BUILTIN_AI_TOOL_INFO: AIBuiltinToolInfo[] = [
       },
     },
   },
+  {
+    name: "inspect_ai_providers",
+    icon: "🪪",
+    desc: "查看当前 AI 供应商与模型配置",
+    detail:
+      "返回当前配置了哪些 AI 供应商、哪个正在生效、各自的 baseUrl、已选模型、声明模型列表、密钥是否存在、自定义请求头 key，以及缺少密钥/模型/地址等待检查项。适合用户问“为什么没有模型”“API Key 有没有配”“当前到底配了哪些供应商”时先读真实配置。",
+    params: "无参数",
+    tool: {
+      type: "function",
+      function: {
+        name: "inspect_ai_providers",
+        description:
+          "读取当前 AI 供应商配置快照，包括供应商列表、活动供应商、接口地址、已选模型、声明模型列表、是否存在密钥、自定义请求头 key，以及缺少密钥/模型/地址等待检查项。适用于用户提到当前供应商、模型列表为空、API Key 是否配置、为什么 AI 不能正常发起请求时，先读取真实配置再解释。",
+        parameters: { type: "object", properties: {} },
+      },
+    },
+  },
   {
     name: "inspect_mcp_setup",
     icon: "🪛",