diff --git a/descriptors/ModuleDescriptor-template.json b/descriptors/ModuleDescriptor-template.json
index 3d39e07e..ec24f8c6 100644
--- a/descriptors/ModuleDescriptor-template.json
+++ b/descriptors/ModuleDescriptor-template.json
@@ -338,6 +338,20 @@
           "permissionsRequired": ["batch-group-storage.batch-groups.item.delete"]
         }
       ]
+    },
+    {
+      "id": "_timer",
+      "version": "1.0",
+      "interfaceType": "system",
+      "handlers": [
+        {
+          "methods": ["POST"],
+          "pathPattern": "/invoice-storage/audit-outbox/process",
+          "modulePermissions": [],
+          "unit": "minute",
+          "delay": "30"
+        }
+      ]
     }
   ],
   "permissionSets": [
diff --git a/ramls/audit-outbox.raml b/ramls/audit-outbox.raml
new file mode 100644
index 00000000..c9f7643c
--- /dev/null
+++ b/ramls/audit-outbox.raml
@@ -0,0 +1,17 @@
+#%RAML 1.0
+title: Audit outbox API
+version: v1.0
+protocols: [ HTTP, HTTPS ]
+baseUri: http://github.com/folio-org/mod-invoice-storage
+
+documentation:
+  - title: Audit outbox API
+    content: This API is intended for internal use only by the Timer interface
+
+types:
+  outbox-event-log: !include acq-models/mod-orders-storage/schemas/outbox_event_log.json
+
+/invoice-storage/audit-outbox:
+  /process:
+    post:
+      description: Read audit events from DB and send them to Kafka