diff --git a/src/main/kotlin/ltd/hlaeja/library/accountRegistry/Authentication.kt b/src/main/kotlin/ltd/hlaeja/library/accountRegistry/Authentication.kt
new file mode 100644
index 0000000..b27838f
--- /dev/null
+++ b/src/main/kotlin/ltd/hlaeja/library/accountRegistry/Authentication.kt
@@ -0,0 +1,12 @@
+package ltd.hlaeja.library.accountRegistry
+
+object Authentication {
+    data class Request(
+        val username: String,
+        val password: CharSequence,
+    )
+
+    data class Response(
+        val token: String,
+    )
+}