diff --git a/compos/apex/Android.bp b/compos/apex/Android.bp
new file mode 100644
index 0000000..ed4dd58
--- /dev/null
+++ b/compos/apex/Android.bp
@@ -0,0 +1,33 @@
+// Copyright (C) 2021 The Android Open Source Project
+//
+// Licensed 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.
+apex_key {
+    name: "com.android.compos.key",
+    public_key: "com.android.compos.avbpubkey",
+    private_key: "com.android.compos.pem",
+}
+
+android_app_certificate {
+    name: "com.android.compos.certificate",
+    certificate: "com.android.compos",
+}
+
+apex {
+    name: "com.android.compos",
+    manifest: "manifest.json",
+    file_contexts: ":com.android.compos-file_contexts",
+    key: "com.android.compos.key",
+
+    // TODO(victorhsieh): make it updatable
+    updatable: false,
+}
diff --git a/compos/apex/com.android.compos.avbpubkey b/compos/apex/com.android.compos.avbpubkey
new file mode 100644
index 0000000..3f09680
--- /dev/null
+++ b/compos/apex/com.android.compos.avbpubkey
Binary files differ
diff --git a/compos/apex/com.android.compos.pem b/compos/apex/com.android.compos.pem
new file mode 100644
index 0000000..7193b76
--- /dev/null
+++ b/compos/apex/com.android.compos.pem
@@ -0,0 +1,51 @@
+-----BEGIN RSA PRIVATE KEY-----
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+-----END RSA PRIVATE KEY-----
diff --git a/compos/apex/com.android.compos.pk8 b/compos/apex/com.android.compos.pk8
new file mode 100644
index 0000000..c93fdef
--- /dev/null
+++ b/compos/apex/com.android.compos.pk8
Binary files differ
diff --git a/compos/apex/com.android.compos.x509.pem b/compos/apex/com.android.compos.x509.pem
new file mode 100644
index 0000000..15c8cd9
--- /dev/null
+++ b/compos/apex/com.android.compos.x509.pem
@@ -0,0 +1,33 @@
+-----BEGIN CERTIFICATE-----
+MIIFyTCCA7ECFCk8uxwqGdXE8FFta+4wn/VMWmYeMA0GCSqGSIb3DQEBCwUAMIGf
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+-----END CERTIFICATE-----
diff --git a/compos/apex/manifest.json b/compos/apex/manifest.json
new file mode 100644
index 0000000..cdb87a3
--- /dev/null
+++ b/compos/apex/manifest.json
@@ -0,0 +1,4 @@
+{
+  "name": "com.android.compos",
+  "version": 1
+}