diff --git a/x-pack/test/api_integration/deployment_agnostic/apis/observability/ai_assistant/complete/functions/visualize_query.spec.ts b/x-pack/test/api_integration/deployment_agnostic/apis/observability/ai_assistant/complete/functions/visualize_query.spec.ts
new file mode 100644
index 0000000000000..0929d5fa133fe
--- /dev/null
+++ b/x-pack/test/api_integration/deployment_agnostic/apis/observability/ai_assistant/complete/functions/visualize_query.spec.ts
@@ -0,0 +1,90 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0; you may not use this file except in compliance with the Elastic License
+ * 2.0.
+ */
+
+import expect from '@kbn/expect';
+import { MessageAddEvent, MessageRole } from '@kbn/observability-ai-assistant-plugin/common';
+import { VisualizeESQLUserIntention } from '@kbn/observability-ai-assistant-plugin/common/functions/visualize_esql';
+import {
+  LlmProxy,
+  createLlmProxy,
+} from '../../../../../../../observability_ai_assistant_api_integration/common/create_llm_proxy';
+import {
+  getMessageAddedEvents,
+  invokeChatCompleteWithFunctionRequest,
+} from '../../utils/conversation';
+import type { DeploymentAgnosticFtrProviderContext } from '../../../../../ftr_provider_context';
+
+export default function ApiTest({ getService }: DeploymentAgnosticFtrProviderContext) {
+  const es = getService('es');
+  const log = getService('log');
+  const observabilityAIAssistantAPIClient = getService('observabilityAIAssistantApi');
+
+  describe('visualize_query', function () {
+    this.tags(['skipCloud']);
+    let llmProxy: LlmProxy;
+    let connectorId: string;
+    let events: MessageAddEvent[];
+    const query = `FROM test_index`;
+
+    before(async () => {
+      llmProxy = await createLlmProxy(log);
+      connectorId = await observabilityAIAssistantAPIClient.createProxyActionConnector({
+        port: llmProxy.getPort(),
+      });
+      await es.index({
+        index: 'test_index',
+        refresh: true,
+        id: 'index_id',
+        document: { bar: 'foo' },
+      });
+      void llmProxy.interceptWithResponse('Hello from LLM Proxy');
+      const responseBody = await invokeChatCompleteWithFunctionRequest({
+        connectorId,
+        observabilityAIAssistantAPIClient,
+        functionCall: {
+          name: 'visualize_query',
+          trigger: MessageRole.Assistant,
+          arguments: JSON.stringify({
+            query,
+            intention: VisualizeESQLUserIntention.visualizeAuto,
+          }),
+        },
+      });
+
+      await llmProxy.waitForAllInterceptorsToHaveBeenCalled();
+
+      events = getMessageAddedEvents(responseBody);
+    });
+
+    after(async () => {
+      await es.indices.delete({
+        index: 'test_index',
+      });
+      llmProxy.close();
+      await observabilityAIAssistantAPIClient.deleteActionConnector({
+        actionId: connectorId,
+      });
+    });
+
+    it('should execute the visualize_query function and return expected messages', async () => {
+      const functionResponse = events[0];
+      expect(functionResponse.message.message.name).to.be('visualize_query');
+
+      const parsedResponse = JSON.parse(functionResponse.message.message.content!);
+      expect(parsedResponse.message).to.contain(query);
+    });
+
+    it('should contain expected document data in response', async () => {
+      const functionResponse = events[0];
+      const parsedData = JSON.parse(functionResponse.message.message.data!);
+
+      expect(parsedData.columns[0].id).to.be('bar');
+      expect(parsedData.rows[0][0]).to.be('foo');
+      expect(parsedData).to.have.property('correctedQuery', query);
+    });
+  });
+}
diff --git a/x-pack/test/api_integration/deployment_agnostic/apis/observability/ai_assistant/index.ts b/x-pack/test/api_integration/deployment_agnostic/apis/observability/ai_assistant/index.ts
index 46f7e22bf7698..06bb2af4d583a 100644
--- a/x-pack/test/api_integration/deployment_agnostic/apis/observability/ai_assistant/index.ts
+++ b/x-pack/test/api_integration/deployment_agnostic/apis/observability/ai_assistant/index.ts
@@ -22,6 +22,7 @@ export default function aiAssistantApiIntegrationTests({
     loadTestFile(require.resolve('./complete/functions/retrieve_elastic_doc.spec.ts'));
     loadTestFile(require.resolve('./complete/functions/summarize.spec.ts'));
     loadTestFile(require.resolve('./complete/functions/title_conversation.spec.ts'));
+    loadTestFile(require.resolve('./complete/functions/visualize_query.spec.ts'));
 
     // knowledge base
     loadTestFile(require.resolve('./knowledge_base/knowledge_base_8.10_upgrade_test.spec.ts'));