diff --git a/src/core/__init__.py b/src/core/__init__.py
index a9d3376..af8589a 100644
--- a/src/core/__init__.py
+++ b/src/core/__init__.py
@@ -1,13 +1,19 @@
-"""Core module for OpenAPI parsing and validation."""
-
-from src.core.models import OpenAPISpec, Endpoint, Schema, Parameter, Response
-from src.core.parser import OpenAPIParser
-
-__all__ = [
-    "OpenAPISpec",
-    "Endpoint",
-    "Schema",
-    "Parameter",
-    "Response",
-    "OpenAPIParser",
-]
+from src.core.models import (
+    Components,
+    Contact,
+    HttpMethod,
+    Info,
+    License,
+    OpenAPISpec,
+    Operation,
+    Parameter,
+    ParameterIn,
+    PathItem,
+    RequestBody,
+    Response,
+    Schema,
+    SecurityScheme,
+    Server,
+    Tag,
+)
+from src.core.parser import OpenAPIParser, parse_openapi_spec