diff --git a/packages/apidash_core/lib/apidash_core.dart b/packages/apidash_core/lib/apidash_core.dart
new file mode 100644
index 00000000..e50512bf
--- /dev/null
+++ b/packages/apidash_core/lib/apidash_core.dart
@@ -0,0 +1,7 @@
+library apidash_core;
+
+/// A Calculator.
+class Calculator {
+  /// Returns [value] plus 1.
+  int addOne(int value) => value + 1;
+}