diff --git a/core/modules/basic_auth/config/schema/basic_auth.schema.yml b/core/modules/basic_auth/config/schema/basic_auth.schema.yml
new file mode 100644
index 0000000..7389296
--- /dev/null
+++ b/core/modules/basic_auth/config/schema/basic_auth.schema.yml
@@ -0,0 +1,21 @@
+# Schema for the configuration files of the HTTP Basic Authentication module.
+
+basic_auth.flood:
+  type: mapping
+  label: ''
+  mapping:
+    uid_only:
+      type: boolean
+      label: 'User ID only'
+    ip_limit:
+      type: integer
+      label: 'IP limit'
+    ip_window:
+      type: integer
+      label: 'IP limit duration'
+    user_limit:
+      type: integer
+      label: 'User limit'
+    user_window:
+      type: integer
+      label: 'User limit duration'