diff --git a/app.py b/app.py
index ac22564..a6897e3 100644
--- a/app.py
+++ b/app.py
@@ -696,6 +696,10 @@ def fetch_answer_tips():
 @app.route('/grading_summary', methods=['POST'])
 @jwt_required()
 def grading_summary():
+    # Body Format
+    # {'sections': Array of {'code': key, 'name': name, 'grade': grade}}
+    # Output Format
+    # {'sections': Array of {'code': key, 'name': name, 'grade': grade, 'evaluation': evaluation, 'suggestions': suggestions}}
     try:
         return calculate_grading_summary(request.get_json())
     except Exception as e: