diff --git a/tests/integration/n8n-api/workflows/get-workflow-details.test.ts b/tests/integration/n8n-api/workflows/get-workflow-details.test.ts
index 217f11d..1a9d187 100644
--- a/tests/integration/n8n-api/workflows/get-workflow-details.test.ts
+++ b/tests/integration/n8n-api/workflows/get-workflow-details.test.ts
@@ -46,7 +46,7 @@ describe('Integration: handleGetWorkflowDetails', () => {
       const workflow = {
         ...SIMPLE_WEBHOOK_WORKFLOW,
         name: createTestWorkflowName('Get Details - Basic'),
-        tags: [{ name: 'mcp-integration-test' }]
+        tags: ['mcp-integration-test']
       };
 
       const created = await client.createWorkflow(workflow);
@@ -64,7 +64,7 @@ describe('Integration: handleGetWorkflowDetails', () => {
       expect(response.data).toBeDefined();
 
       // handleGetWorkflowDetails returns { workflow, executionStats, hasWebhookTrigger, webhookPath }
-      const details = response.data.workflow;
+      const details = (response.data as any).workflow;
 
       // Verify basic details
       expect(details).toBeDefined();
@@ -90,9 +90,9 @@ describe('Integration: handleGetWorkflowDetails', () => {
         ...SIMPLE_WEBHOOK_WORKFLOW,
         name: createTestWorkflowName('Get Details - With Metadata'),
         tags: [
-          { name: 'mcp-integration-test' },
-          { name: 'test-category' },
-          { name: 'integration' }
+          'mcp-integration-test',
+          'test-category',
+          'integration'
         ],
         settings: {
           executionOrder: 'v1' as const,
@@ -110,7 +110,7 @@ describe('Integration: handleGetWorkflowDetails', () => {
       // Retrieve workflow details using MCP handler
       const response = await handleGetWorkflowDetails({ id: created.id }, mcpContext);
       expect(response.success).toBe(true);
-      const details = response.data.workflow;
+      const details = (response.data as any).workflow;
 
       // Verify metadata is present (tags may be undefined in API response)
       // Note: n8n API behavior for tags varies - they may not be returned
@@ -136,7 +136,7 @@ describe('Integration: handleGetWorkflowDetails', () => {
       const workflow = {
         ...SIMPLE_WEBHOOK_WORKFLOW,
         name: createTestWorkflowName('Get Details - Version History'),
-        tags: [{ name: 'mcp-integration-test' }]
+        tags: ['mcp-integration-test']
       };
 
       const created = await client.createWorkflow(workflow);
@@ -149,7 +149,7 @@ describe('Integration: handleGetWorkflowDetails', () => {
       // Get initial version using MCP handler
       const initialResponse = await handleGetWorkflowDetails({ id: created.id }, mcpContext);
       expect(initialResponse.success).toBe(true);
-      const initialDetails = initialResponse.data.workflow;
+      const initialDetails = (initialResponse.data as any).workflow;
       const initialVersionId = initialDetails.versionId;
       const initialUpdatedAt = initialDetails.updatedAt;
 
@@ -163,7 +163,7 @@ describe('Integration: handleGetWorkflowDetails', () => {
       // Get updated details using MCP handler
       const updatedResponse = await handleGetWorkflowDetails({ id: created.id }, mcpContext);
       expect(updatedResponse.success).toBe(true);
-      const updatedDetails = updatedResponse.data.workflow;
+      const updatedDetails = (updatedResponse.data as any).workflow;
 
       // Verify version changed
       expect(updatedDetails.versionId).toBeDefined();
@@ -184,7 +184,7 @@ describe('Integration: handleGetWorkflowDetails', () => {
       const workflow = {
         ...SIMPLE_WEBHOOK_WORKFLOW,
         name: createTestWorkflowName('Get Details - Execution Stats'),
-        tags: [{ name: 'mcp-integration-test' }]
+        tags: ['mcp-integration-test']
       };
 
       const created = await client.createWorkflow(workflow);
@@ -197,7 +197,7 @@ describe('Integration: handleGetWorkflowDetails', () => {
       // Retrieve workflow details using MCP handler
       const response = await handleGetWorkflowDetails({ id: created.id }, mcpContext);
       expect(response.success).toBe(true);
-      const details = response.data.workflow;
+      const details = (response.data as any).workflow;
 
       // Verify execution-related fields exist
       // Note: New workflows won't have executions, but fields should be present
diff --git a/tests/integration/n8n-api/workflows/get-workflow-minimal.test.ts b/tests/integration/n8n-api/workflows/get-workflow-minimal.test.ts
index 6affcf1..6f80ed7 100644
--- a/tests/integration/n8n-api/workflows/get-workflow-minimal.test.ts
+++ b/tests/integration/n8n-api/workflows/get-workflow-minimal.test.ts
@@ -47,8 +47,8 @@ describe('Integration: handleGetWorkflowMinimal', () => {
         ...SIMPLE_WEBHOOK_WORKFLOW,
         name: createTestWorkflowName('Get Minimal - Inactive'),
         tags: [
-          { name: 'mcp-integration-test' },
-          { name: 'minimal-test' }
+          'mcp-integration-test',
+          'minimal-test'
         ]
       };
 
@@ -97,8 +97,8 @@ describe('Integration: handleGetWorkflowMinimal', () => {
         ...SIMPLE_WEBHOOK_WORKFLOW,
         name: createTestWorkflowName('Get Minimal - Active'),
         tags: [
-          { name: 'mcp-integration-test' },
-          { name: 'minimal-test-active' }
+          'mcp-integration-test',
+          'minimal-test-active'
         ]
       };
 
diff --git a/tests/integration/n8n-api/workflows/get-workflow-structure.test.ts b/tests/integration/n8n-api/workflows/get-workflow-structure.test.ts
index 26b1da8..c568fc1 100644
--- a/tests/integration/n8n-api/workflows/get-workflow-structure.test.ts
+++ b/tests/integration/n8n-api/workflows/get-workflow-structure.test.ts
@@ -46,7 +46,7 @@ describe('Integration: handleGetWorkflowStructure', () => {
       const workflow = {
         ...SIMPLE_WEBHOOK_WORKFLOW,
         name: createTestWorkflowName('Get Structure - Simple'),
-        tags: [{ name: 'mcp-integration-test' }]
+        tags: ['mcp-integration-test']
       };
 
       const created = await client.createWorkflow(workflow);
@@ -92,7 +92,7 @@ describe('Integration: handleGetWorkflowStructure', () => {
       const workflow = {
         ...MULTI_NODE_WORKFLOW,
         name: createTestWorkflowName('Get Structure - Complex'),
-        tags: [{ name: 'mcp-integration-test' }]
+        tags: ['mcp-integration-test']
       };
 
       const created = await client.createWorkflow(workflow);
diff --git a/tests/integration/n8n-api/workflows/get-workflow.test.ts b/tests/integration/n8n-api/workflows/get-workflow.test.ts
index 7ddbc5f..f2eeb7d 100644
--- a/tests/integration/n8n-api/workflows/get-workflow.test.ts
+++ b/tests/integration/n8n-api/workflows/get-workflow.test.ts
@@ -9,6 +9,7 @@ import { describe, it, expect, beforeEach, afterEach, afterAll } from 'vitest';
 import { createTestContext, TestContext, createTestWorkflowName } from '../utils/test-context';
 import { getTestN8nClient } from '../utils/n8n-client';
 import { N8nApiClient } from '../../../../src/services/n8n-api-client';
+import { Workflow } from '../../../../src/types/n8n-api';
 import { SIMPLE_WEBHOOK_WORKFLOW } from '../utils/fixtures';
 import { cleanupOrphanedWorkflows } from '../utils/cleanup-helpers';
 import { createMcpContext } from '../utils/mcp-context';
@@ -46,7 +47,7 @@ describe('Integration: handleGetWorkflow', () => {
       const workflow = {
         ...SIMPLE_WEBHOOK_WORKFLOW,
         name: createTestWorkflowName('Get Workflow - Complete Data'),
-        tags: [{ name: 'mcp-integration-test' }]
+        tags: ['mcp-integration-test']
       };
 
       const created = await client.createWorkflow(workflow);
@@ -63,14 +64,14 @@ describe('Integration: handleGetWorkflow', () => {
       expect(response.success).toBe(true);
       expect(response.data).toBeDefined();
 
-      const retrieved = response.data;
+      const retrieved = response.data as Workflow;
 
       // Verify all expected fields are present
       expect(retrieved).toBeDefined();
       expect(retrieved.id).toBe(created.id);
       expect(retrieved.name).toBe(workflow.name);
       expect(retrieved.nodes).toBeDefined();
-      expect(retrieved.nodes).toHaveLength(workflow.nodes.length);
+      expect(retrieved.nodes).toHaveLength(workflow.nodes!.length);
       expect(retrieved.connections).toBeDefined();
       expect(retrieved.active).toBeDefined();
       expect(retrieved.createdAt).toBeDefined();
@@ -78,7 +79,7 @@ describe('Integration: handleGetWorkflow', () => {
 
       // Verify node data integrity
       const retrievedNode = retrieved.nodes[0];
-      const originalNode = workflow.nodes[0];
+      const originalNode = workflow.nodes![0];
       expect(retrievedNode.name).toBe(originalNode.name);
       expect(retrievedNode.type).toBe(originalNode.type);
       expect(retrievedNode.parameters).toBeDefined();