diff --git a/x-pack/test_serverless/api_integration/test_suites/common/core/capabilities.ts b/x-pack/test_serverless/api_integration/test_suites/common/core/capabilities.ts
new file mode 100644
index 0000000000000..a05c0d99bd331
--- /dev/null
+++ b/x-pack/test_serverless/api_integration/test_suites/common/core/capabilities.ts
@@ -0,0 +1,30 @@
+/*
+ * 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 { FtrProviderContext } from '../../../ftr_provider_context';
+
+export default function ({ getService }: FtrProviderContext) {
+  const supertest = getService('supertest');
+  const svlCommonApi = getService('svlCommonApi');
+  describe('/api/core/capabilities', () => {
+    it(`returns a 400 when an invalid app id is provided`, async () => {
+      const { body } = await supertest
+        .post('/api/core/capabilities')
+        .set(svlCommonApi.getInternalRequestHeader())
+        .send({
+          applications: ['dashboard', 'discover', 'bad%app'],
+        })
+        .expect(400);
+      expect(body).to.eql({
+        statusCode: 400,
+        error: 'Bad Request',
+        message: '[request body.applications.2]: Invalid application id',
+      });
+    });
+  });
+}
diff --git a/x-pack/test_serverless/api_integration/test_suites/common/core/compression.ts b/x-pack/test_serverless/api_integration/test_suites/common/core/compression.ts
new file mode 100644
index 0000000000000..3284d065c9b60
--- /dev/null
+++ b/x-pack/test_serverless/api_integration/test_suites/common/core/compression.ts
@@ -0,0 +1,43 @@
+/*
+ * 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 { FtrProviderContext } from '../../../ftr_provider_context';
+
+export default function ({ getService }: FtrProviderContext) {
+  const supertest = getService('supertest');
+  const svlCommonApi = getService('svlCommonApi');
+
+  const compressionSuite = (url: string) => {
+    it(`uses compression when there isn't a referer`, async () => {
+      await supertest
+        .get(url)
+        .set('accept-encoding', 'gzip')
+        .set(svlCommonApi.getInternalRequestHeader())
+        .then((response) => {
+          expect(response.header).to.have.property('content-encoding', 'gzip');
+        });
+    });
+
+    it(`uses compression when there is a whitelisted referer`, async () => {
+      await supertest
+        .get(url)
+        .set('accept-encoding', 'gzip')
+        .set(svlCommonApi.getInternalRequestHeader())
+        .set('referer', 'https://some-host.com')
+        .then((response) => {
+          expect(response.header).to.have.property('content-encoding', 'gzip');
+        });
+    });
+  };
+
+  describe('compression', () => {
+    describe('against an application page', () => {
+      compressionSuite('/app/kibana');
+    });
+  });
+}
diff --git a/x-pack/test_serverless/api_integration/test_suites/common/core/index.ts b/x-pack/test_serverless/api_integration/test_suites/common/core/index.ts
new file mode 100644
index 0000000000000..f55f77bd7e6ab
--- /dev/null
+++ b/x-pack/test_serverless/api_integration/test_suites/common/core/index.ts
@@ -0,0 +1,16 @@
+/*
+ * 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 { FtrProviderContext } from '../../../ftr_provider_context';
+
+export default function ({ loadTestFile }: FtrProviderContext) {
+  describe('core', () => {
+    loadTestFile(require.resolve('./compression'));
+    loadTestFile(require.resolve('./translations'));
+    loadTestFile(require.resolve('./capabilities'));
+  });
+}
diff --git a/x-pack/test_serverless/api_integration/test_suites/common/core/translations.ts b/x-pack/test_serverless/api_integration/test_suites/common/core/translations.ts
new file mode 100644
index 0000000000000..26b4302bf2c71
--- /dev/null
+++ b/x-pack/test_serverless/api_integration/test_suites/common/core/translations.ts
@@ -0,0 +1,31 @@
+/*
+ * 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 { FtrProviderContext } from '../../../ftr_provider_context';
+
+export default function ({ getService }: FtrProviderContext) {
+  const supertest = getService('supertest');
+
+  describe('translations', () => {
+    it(`returns the translations with the correct headers`, async () => {
+      await supertest.get('/translations/en.json').then((response) => {
+        expect(response.body.locale).to.eql('en');
+
+        expect(response.header).to.have.property('content-type', 'application/json; charset=utf-8');
+        expect(response.header).to.have.property('cache-control', 'must-revalidate');
+        expect(response.header).to.have.property('etag');
+      });
+    });
+
+    it(`returns a 404 when not using the correct locale`, async () => {
+      await supertest.get('/translations/foo.json').then((response) => {
+        expect(response.status).to.eql(404);
+      });
+    });
+  });
+}
diff --git a/x-pack/test_serverless/api_integration/test_suites/observability/common_configs/config.group1.ts b/x-pack/test_serverless/api_integration/test_suites/observability/common_configs/config.group1.ts
index a04b9074662da..d1ce536ee1f6b 100644
--- a/x-pack/test_serverless/api_integration/test_suites/observability/common_configs/config.group1.ts
+++ b/x-pack/test_serverless/api_integration/test_suites/observability/common_configs/config.group1.ts
@@ -24,6 +24,7 @@ export default async function ({ readConfigFile }: FtrConfigProviderContext) {
       require.resolve('../../common/scripts_tests'),
       require.resolve('../../common/search_oss'),
       require.resolve('../../common/search_xpack'),
+      require.resolve('../../common/core'),
     ],
     junit: {
       reportName: 'Serverless Observability API Integration Tests - Common Group 1',
diff --git a/x-pack/test_serverless/api_integration/test_suites/search/common_configs/config.group1.ts b/x-pack/test_serverless/api_integration/test_suites/search/common_configs/config.group1.ts
index 8a983926a12e6..b24b68b8e4a48 100644
--- a/x-pack/test_serverless/api_integration/test_suites/search/common_configs/config.group1.ts
+++ b/x-pack/test_serverless/api_integration/test_suites/search/common_configs/config.group1.ts
@@ -24,6 +24,7 @@ export default async function ({ readConfigFile }: FtrConfigProviderContext) {
       require.resolve('../../common/scripts_tests'),
       require.resolve('../../common/search_oss'),
       require.resolve('../../common/search_xpack'),
+      require.resolve('../../common/core'),
     ],
     junit: {
       reportName: 'Serverless Search API Integration Tests - Common Group 1',
diff --git a/x-pack/test_serverless/api_integration/test_suites/security/common_configs/config.group1.ts b/x-pack/test_serverless/api_integration/test_suites/security/common_configs/config.group1.ts
index 995c62fea1fd5..a46be9dcf4f75 100644
--- a/x-pack/test_serverless/api_integration/test_suites/security/common_configs/config.group1.ts
+++ b/x-pack/test_serverless/api_integration/test_suites/security/common_configs/config.group1.ts
@@ -24,6 +24,7 @@ export default async function ({ readConfigFile }: FtrConfigProviderContext) {
       require.resolve('../../common/scripts_tests'),
       require.resolve('../../common/search_oss'),
       require.resolve('../../common/search_xpack'),
+      require.resolve('../../common/core'),
     ],
     junit: {
       reportName: 'Serverless Security API Integration Tests - Common Group 1',