diff --git a/modules/l1/l1-s3/manifest.yaml b/modules/l1/l1-s3/manifest.yaml
new file mode 100644
index 0000000..cd0c0ff
--- /dev/null
+++ b/modules/l1/l1-s3/manifest.yaml
@@ -0,0 +1,13 @@
+name: l1-s3
+kind: l1
+description: Object store primitive
+inputs:
+  bucket_name:
+    description: Globally unique name of the S3 bucket
+    type: string
+  region:
+    description: AWS region the bucket lives in
+    type: string
+  retention_days:
+    description: Number of days to retain objects before expiration
+    type: string
\ No newline at end of file
diff --git a/modules/l1/l1-s3/mock_apply.sh b/modules/l1/l1-s3/mock_apply.sh
new file mode 100755
index 0000000..d3ad62b
--- /dev/null
+++ b/modules/l1/l1-s3/mock_apply.sh
@@ -0,0 +1,6 @@
+#!/usr/bin/env bash
+set -euo pipefail
+echo "[L1: l1-s3] applying..."
+sleep 1
+echo "[L1: l1-s3] OK"
+exit 0
\ No newline at end of file