diff --git a/modules/l1/l1-lambda/manifest.yaml b/modules/l1/l1-lambda/manifest.yaml
new file mode 100644
index 0000000..e189dbc
--- /dev/null
+++ b/modules/l1/l1-lambda/manifest.yaml
@@ -0,0 +1,13 @@
+name: l1-lambda
+kind: l1
+description: Event-driven function primitive
+inputs:
+  function_name:
+    description: Name of the Lambda function
+    type: string
+  runtime:
+    description: Lambda runtime identifier (e.g. python3.12, nodejs20.x)
+    type: string
+  handler:
+    description: Handler entrypoint in the form module.function
+    type: string
\ No newline at end of file
diff --git a/modules/l1/l1-lambda/mock_apply.sh b/modules/l1/l1-lambda/mock_apply.sh
new file mode 100755
index 0000000..1beb98f
--- /dev/null
+++ b/modules/l1/l1-lambda/mock_apply.sh
@@ -0,0 +1,6 @@
+#!/usr/bin/env bash
+set -euo pipefail
+echo "[L1: l1-lambda] applying..."
+sleep 1
+echo "[L1: l1-lambda] OK"
+exit 0
\ No newline at end of file