diff --git a/test/cases/web/core/plugin/marketplace/api.test.ts b/test/cases/web/core/plugin/marketplace/api.test.ts
new file mode 100644
index 000000000000..8ee9fe7b2e67
--- /dev/null
+++ b/test/cases/web/core/plugin/marketplace/api.test.ts
@@ -0,0 +1,81 @@
+import { describe, it, expect, beforeEach, vi } from 'vitest';
+import * as api from '@/web/core/plugin/marketplace/api';
+
+vi.mock('@/web/common/api/request', async (importOriginal) => {
+  const actual = await importOriginal<typeof import('@/web/common/api/request')>();
+  return {
+    ...actual,
+    GET: vi.fn(),
+    POST: vi.fn()
+  };
+});
+
+import { GET, POST } from '@/web/common/api/request';
+
+describe('marketplace/api', () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  describe('getSystemInstalledPlugins', () => {
+    it('should call GET with correct URL and data', async () => {
+      vi.mocked(GET).mockResolvedValueOnce({ plugins: [], total: 0 });
+      const query = { page: 1, pageSize: 10 };
+      const result = await api.getSystemInstalledPlugins(query);
+      expect(GET).toHaveBeenCalledWith('/core/plugin/admin/marketplace/installed', query);
+      expect(result).toEqual({ plugins: [], total: 0 });
+    });
+  });
+
+  describe('getMarketplaceTools', () => {
+    it('should call POST with correct URL and data', async () => {
+      const mockResponse = { data: [], total: 0, page: 1, pageSize: 10 };
+      vi.mocked(POST).mockResolvedValueOnce(mockResponse);
+      const body = { page: 1, pageSize: 10, tags: ['tag1'] };
+      const result = await api.getMarketplaceTools(body);
+      expect(POST).toHaveBeenCalledWith('/marketplace/api/tool/list', body);
+      expect(result).toEqual(mockResponse);
+    });
+  });
+
+  describe('getMarketplaceToolDetail', () => {
+    it('should call GET with correct URL and data', async () => {
+      const mockDetail = { id: 'tool1', name: 'Tool One', description: 'desc' };
+      vi.mocked(GET).mockResolvedValueOnce(mockDetail);
+      const query = { toolId: 'tool1' };
+      const result = await api.getMarketplaceToolDetail(query);
+      expect(GET).toHaveBeenCalledWith('/marketplace/api/tool/detail', query);
+      expect(result).toEqual(mockDetail);
+    });
+  });
+
+  describe('getMarketPlaceToolTags', () => {
+    it('should call GET with correct URL and no data', async () => {
+      const mockTags = { tags: ['tag1', 'tag2'] };
+      vi.mocked(GET).mockResolvedValueOnce(mockTags);
+      const result = await api.getMarketPlaceToolTags();
+      expect(GET).toHaveBeenCalledWith('/marketplace/api/tool/tags');
+      expect(result).toEqual(mockTags);
+    });
+  });
+
+  describe('getMarketplaceDownloadURL', () => {
+    it('should call GET with correct URL and toolId', async () => {
+      const mockUrl = 'https://download.url/plugin.zip';
+      vi.mocked(GET).mockResolvedValueOnce(mockUrl);
+      const toolId = 'plugin123';
+      const result = await api.getMarketplaceDownloadURL(toolId);
+      expect(GET).toHaveBeenCalledWith('/marketplace/api/tool/getDownloadUrl', { toolId });
+      expect(result).toEqual(mockUrl);
+    });
+
+    it('should handle empty toolId', async () => {
+      const mockUrl = '';
+      vi.mocked(GET).mockResolvedValueOnce(mockUrl);
+      const toolId = '';
+      const result = await api.getMarketplaceDownloadURL(toolId);
+      expect(GET).toHaveBeenCalledWith('/marketplace/api/tool/getDownloadUrl', { toolId });
+      expect(result).toEqual(mockUrl);
+    });
+  });
+});