diff --git a/locale/schema/config.json b/locale/schema/config.json
new file mode 100644
index 000000000..18c0fbfe5
--- /dev/null
+++ b/locale/schema/config.json
@@ -0,0 +1,16 @@
+{
+  "$id": "https://schemas.cortezaproject.org/def.json",
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "type": "object",
+  "properties": {
+    "name": {
+      "type": "string",
+      "title": "Language name"
+    },
+    "extends": {
+      "type": "string",
+      "title": "Language to extend"
+    }
+  },
+  "additionalProperties": false
+}