diff --git a/src/core/__init__.py b/src/core/__init__.py
new file mode 100644
index 0000000..0af5e64
--- /dev/null
+++ b/src/core/__init__.py
@@ -0,0 +1,15 @@
+"""Core modules for OpenAPI Mock Generator."""
+
+from src.core.fuzzer import Fuzzer
+from src.core.generator import ResponseGenerator
+from src.core.parser import OpenAPIParser
+from src.core.server import MockServer
+from src.core.validator import RequestValidator
+
+__all__ = [
+    "OpenAPIParser",
+    "ResponseGenerator",
+    "RequestValidator",
+    "MockServer",
+    "Fuzzer",
+]