diff --git a/modules/usage_plan/outputs.tf b/modules/usage_plan/outputs.tf
new file mode 100644
index 0000000..6a92e60
--- /dev/null
+++ b/modules/usage_plan/outputs.tf
@@ -0,0 +1,6 @@
+output "api_keys_id" {
+  description = "ID of the api keys"
+  value = {
+    for k, v in aws_api_gateway_api_key.key : k => v.id
+  }
+}