diff --git a/.github/workflows/otel.yml b/.github/workflows/otel.yml
index a8b9bc7c82..e58e12e8b0 100644
--- a/.github/workflows/otel.yml
+++ b/.github/workflows/otel.yml
@@ -2,10 +2,10 @@ name: opentelemetry
 on:
   push:
     branches:
-      - main
+      - 8.x
   pull_request:
     branches:
-      - main
+      - 8.x
 jobs:
   test-otel:
     name: 'Test Open Telemetry'
diff --git a/elasticsearch-api/spec/rest_api/skipped_tests_platinum.yml b/elasticsearch-api/spec/rest_api/skipped_tests_platinum.yml
index 47b1e8d2a1..e1459a9e39 100644
--- a/elasticsearch-api/spec/rest_api/skipped_tests_platinum.yml
+++ b/elasticsearch-api/spec/rest_api/skipped_tests_platinum.yml
@@ -226,3 +226,10 @@
 -
   :file: 'esql/150_lookup.yml'
   :description: '*'
+# TODO: once migrate is available in spec
+-
+  :file: 'migrate/10_reindex.yml'
+  :description: '*'
+-
+  :file: 'migrate/20_reindex_status.yml'
+  :description: '*'
diff --git a/elasticsearch-api/spec/unit/actions/async_search/delete_spec.rb b/elasticsearch-api/spec/unit/actions/async_search/delete_spec.rb
new file mode 100644
index 0000000000..8db2fb3297
--- /dev/null
+++ b/elasticsearch-api/spec/unit/actions/async_search/delete_spec.rb
@@ -0,0 +1,35 @@
+# Licensed to Elasticsearch B.V. under one or more contributor
+# license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright
+# ownership. Elasticsearch B.V. licenses this file to you under
+# the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+require 'spec_helper'
+
+describe 'async_search.delete' do
+  let(:expected_args) do
+    [
+      'DELETE',
+      '_async_search/foo',
+      {},
+      nil,
+      {},
+      { endpoint: 'count' }
+    ]
+  end
+
+  it 'performs the request' do
+    expect(client_double.async_search.delete(id: 'foo')).to be_a Elasticsearch::API::Response
+  end
+end
diff --git a/elasticsearch-api/spec/unit/actions/async_search/get_spec.rb b/elasticsearch-api/spec/unit/actions/async_search/get_spec.rb
new file mode 100644
index 0000000000..80d9b84e91
--- /dev/null
+++ b/elasticsearch-api/spec/unit/actions/async_search/get_spec.rb
@@ -0,0 +1,35 @@
+# Licensed to Elasticsearch B.V. under one or more contributor
+# license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright
+# ownership. Elasticsearch B.V. licenses this file to you under
+# the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+require 'spec_helper'
+
+describe 'async_search.delete' do
+  let(:expected_args) do
+    [
+      'GET',
+      '_async_search/foo',
+      {},
+      nil,
+      {},
+      { endpoint: 'count' }
+    ]
+  end
+
+  it 'performs the request' do
+    expect(client_double.async_search.get(id: 'foo')).to be_a Elasticsearch::API::Response
+  end
+end
diff --git a/elasticsearch-api/spec/unit/actions/async_search/status_spec.rb b/elasticsearch-api/spec/unit/actions/async_search/status_spec.rb
new file mode 100644
index 0000000000..66191b44ae
--- /dev/null
+++ b/elasticsearch-api/spec/unit/actions/async_search/status_spec.rb
@@ -0,0 +1,34 @@
+# Licensed to Elasticsearch B.V. under one or more contributor
+# license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright
+# ownership. Elasticsearch B.V. licenses this file to you under
+# the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+require 'spec_helper'
+
+describe 'async_search.delete' do
+  let(:expected_args) do
+    [
+      'GET',
+      '_async_search/status/foo',
+      {},
+      nil,
+      {},
+      { endpoint: 'async_search.status' }
+    ]
+  end
+
+  it 'performs the request' do
+    expect(client_double.async_search.status(id: 'foo')).to be_a Elasticsearch::API::Response
+  end
+end
diff --git a/elasticsearch-api/spec/unit/actions/async_search/submit_spec.rb b/elasticsearch-api/spec/unit/actions/async_search/submit_spec.rb
new file mode 100644
index 0000000000..5c2068e080
--- /dev/null
+++ b/elasticsearch-api/spec/unit/actions/async_search/submit_spec.rb
@@ -0,0 +1,87 @@
+# Licensed to Elasticsearch B.V. under one or more contributor
+# license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright
+# ownership. Elasticsearch B.V. licenses this file to you under
+# the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+require 'spec_helper'
+
+describe 'async_search.submit' do
+  context 'with no parameters' do
+    let(:expected_args) do
+      [
+        'POST',
+        '_async_search',
+        {},
+        nil,
+        {},
+        { endpoint: 'async_search.submit' }
+      ]
+    end
+
+    it 'performs the request' do
+      expect(client_double.async_search.submit).to be_a Elasticsearch::API::Response
+    end
+  end
+
+  context 'with index' do
+    let(:expected_args) do
+      [
+        'DELETE',
+        '_async_search/foo',
+        {},
+        nil,
+        {},
+        { endpoint: 'count' }
+      ]
+    end
+
+    it 'performs the request' do
+      expect(client_double.async_search.submit).to be_a Elasticsearch::API::Response
+    end
+  end
+end
+
+require 'test_helper'
+
+module Elasticsearch
+  module Test
+    class XPackAsyncSearchSubmit < Minitest::Test
+      subject { FakeClient.new }
+
+      context 'XPack: Async Search Submit' do
+        should 'perform correct request' do
+          subject.expects(:perform_request).with do |method, url, params, body|
+            assert_equal('POST', method)
+            assert_equal('_async_search', url)
+            assert_equal({}, params)
+            assert_nil(body)
+          end.returns(FakeResponse.new)
+
+          subject.async_search.submit
+        end
+
+        should 'perform correct request with index' do
+          subject.expects(:perform_request).with do |method, url, params, body|
+            assert_equal('POST', method)
+            assert_equal('foo/_async_search', url)
+            assert_equal({}, params)
+            assert_nil(body)
+          end.returns(FakeResponse.new)
+
+          subject.async_search.submit(index: 'foo')
+        end
+      end
+    end
+  end
+end