diff --git a/x-pack/platform/plugins/shared/agent_builder_workflows/server/tools/generate_workflow.test.ts b/x-pack/platform/plugins/shared/agent_builder_workflows/server/tools/generate_workflow.test.ts
index 6d79f8bc20ab9..7f41e5da42780 100644
--- a/x-pack/platform/plugins/shared/agent_builder_workflows/server/tools/generate_workflow.test.ts
+++ b/x-pack/platform/plugins/shared/agent_builder_workflows/server/tools/generate_workflow.test.ts
@@ -21,8 +21,10 @@ jest.mock('@kbn/agent-builder-workflow-gen', () => ({
 const generateWorkflowMock = generateWorkflow as jest.MockedFunction<typeof generateWorkflow>;
 
 describe('generateWorkflowTool', () => {
+  const validateWorkflowMock = jest.fn().mockResolvedValue({ valid: true, diagnostics: [] });
+
   const workflowsManagement = {
-    management: { __mock: 'workflowsApi' },
+    management: { validateWorkflow: validateWorkflowMock },
   } as any;
 
   const aiTelemetryClient = {
@@ -73,6 +75,8 @@ describe('generateWorkflowTool', () => {
   beforeEach(() => {
     generateWorkflowMock.mockReset();
     aiTelemetryClient.reportEditResult.mockReset();
+    validateWorkflowMock.mockReset();
+    validateWorkflowMock.mockResolvedValue({ valid: true, diagnostics: [] });
   });
 
   it('creates a new workflow: adds diff attachment, adds workflow attachment, sends UI event, reports telemetry', async () => {
@@ -245,6 +249,76 @@ describe('generateWorkflowTool', () => {
     );
   });
 
+  it('passes a compact validation result to telemetry when the generated YAML is valid', async () => {
+    generateWorkflowMock.mockResolvedValueOnce({
+      workflow: generatedWorkflow,
+      response: 'created',
+    } as any);
+    validateWorkflowMock.mockResolvedValueOnce({ valid: true, diagnostics: [] });
+
+    const context = buildContext();
+    const tool = generateWorkflowTool({ workflowsManagement, aiTelemetryClient });
+    await tool.handler({ query: 'q' } as any, context);
+
+    expect(validateWorkflowMock).toHaveBeenCalledWith(
+      expect.stringContaining('name: foo'),
+      'default',
+      expect.objectContaining({ __mock: 'request' })
+    );
+    expect(aiTelemetryClient.reportEditResult).toHaveBeenCalledWith(
+      expect.objectContaining({
+        editSuccess: true,
+        isCreation: true,
+        validation: { valid: true },
+      })
+    );
+  });
+
+  it('passes compact errors to telemetry when the generated YAML fails validation', async () => {
+    generateWorkflowMock.mockResolvedValueOnce({
+      workflow: generatedWorkflow,
+      response: 'created',
+    } as any);
+    validateWorkflowMock.mockResolvedValueOnce({
+      valid: false,
+      diagnostics: [
+        { severity: 'error', source: 'schema', message: 'missing field', path: ['steps', 0] },
+        { severity: 'warning', source: 'schema', message: 'soft warning' },
+        { severity: 'error', source: 'liquid', message: 'bad template' },
+      ],
+    });
+
+    const context = buildContext();
+    const tool = generateWorkflowTool({ workflowsManagement, aiTelemetryClient });
+    await tool.handler({ query: 'q' } as any, context);
+
+    expect(aiTelemetryClient.reportEditResult).toHaveBeenCalledWith(
+      expect.objectContaining({
+        editSuccess: true,
+        validation: {
+          valid: false,
+          errors: ['[schema] missing field (at steps.0)', '[liquid] bad template'],
+        },
+      })
+    );
+  });
+
+  it('omits validation in telemetry when validateWorkflow throws', async () => {
+    generateWorkflowMock.mockResolvedValueOnce({
+      workflow: generatedWorkflow,
+      response: 'created',
+    } as any);
+    validateWorkflowMock.mockRejectedValueOnce(new Error('validator down'));
+
+    const context = buildContext();
+    const tool = generateWorkflowTool({ workflowsManagement, aiTelemetryClient });
+    await tool.handler({ query: 'q' } as any, context);
+
+    expect(aiTelemetryClient.reportEditResult).toHaveBeenCalledWith(
+      expect.objectContaining({ editSuccess: true, validation: undefined })
+    );
+  });
+
   it('returns an errorResult and reports failed telemetry when generateWorkflow throws', async () => {
     generateWorkflowMock.mockRejectedValueOnce(new Error('boom'));
 
diff --git a/x-pack/platform/plugins/shared/agent_builder_workflows/server/tools/generate_workflow.ts b/x-pack/platform/plugins/shared/agent_builder_workflows/server/tools/generate_workflow.ts
index ec91efe3a74b8..7bcfa29fb9ef0 100644
--- a/x-pack/platform/plugins/shared/agent_builder_workflows/server/tools/generate_workflow.ts
+++ b/x-pack/platform/plugins/shared/agent_builder_workflows/server/tools/generate_workflow.ts
@@ -7,18 +7,47 @@
 
 import { v4 } from 'uuid';
 import { z } from '@kbn/zod/v4';
+import type { KibanaRequest } from '@kbn/core/server';
 import { platformCoreTools, ToolType } from '@kbn/agent-builder-common';
 import type { BuiltinToolDefinition } from '@kbn/agent-builder-server';
 import { generateWorkflow, type GenerateWorkflowEdit } from '@kbn/agent-builder-workflow-gen';
 import { cleanPrompt } from '@kbn/agent-builder-genai-utils/prompts';
 import { errorResult, otherResult } from '@kbn/agent-builder-genai-utils/tools/utils/results';
-import type { WorkflowsServerPluginSetup } from '@kbn/workflows-management-plugin/server';
+import type {
+  WorkflowsManagementApi,
+  WorkflowsServerPluginSetup,
+} from '@kbn/workflows-management-plugin/server';
 import { workflowIdSchema } from '@kbn/workflows-management-plugin/common/lib/workflow_id_schema';
 import { WORKFLOW_YAML_ATTACHMENT_TYPE } from '@kbn/workflows/common/constants';
 import { stringifyWorkflowDefinition } from '@kbn/workflows-yaml';
 import type { WorkflowsAiTelemetryClient } from '../telemetry/workflows_ai_telemetry_client';
 import { emitWorkflowDiff, extractConversationId } from './utils/workflow_attachments';
 
+interface CompactValidation {
+  valid: boolean;
+  errors?: string[];
+}
+
+const runCompactValidation = async (
+  yaml: string,
+  api: WorkflowsManagementApi,
+  spaceId: string,
+  request: KibanaRequest
+): Promise<CompactValidation | undefined> => {
+  try {
+    const result = await api.validateWorkflow(yaml, spaceId, request);
+    if (result.valid) {
+      return { valid: true };
+    }
+    const errors = result.diagnostics
+      .filter((d) => d.severity === 'error')
+      .map((d) => `[${d.source}] ${d.message}${d.path ? ` (at ${d.path.join('.')})` : ''}`);
+    return { valid: false, errors };
+  } catch {
+    return undefined;
+  }
+};
+
 const generateWorkflowSchema = z.object({
   query: z
     .string()
@@ -162,11 +191,14 @@ And you should **not**:
           toolId: platformCoreTools.generateWorkflow,
         });
 
+        const validation = await runCompactValidation(afterYaml, workflowsApi, spaceId, request);
+
         aiTelemetryClient.reportEditResult({
           toolId: platformCoreTools.generateWorkflow,
           conversationId: extractConversationId(toolContext),
           editSuccess: true,
           isCreation: !sourceAttachment,
+          validation,
         });
 
         return {