diff --git a/README.md b/README.md
index 3aa6aa9..ca9945f 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1 @@
-# 4d516a68c06041d4b15fb45df2d49900
-
+# python hello-world
diff --git a/main.py b/main.py
new file mode 100644
index 0000000..9ddbc70
--- /dev/null
+++ b/main.py
@@ -0,0 +1,25 @@
+from flask import jsonify
+
+def main(request):
+    request_json = request.get_json(silent=True)
+
+    # ✅ Check if body was parsed successfully
+    if request_json is None:
+        return jsonify({"error": "Invalid or missing JSON in request body."}), 400
+
+    name = request_json.get("name")
+    salary = request_json.get("salary")
+
+    # ✅ Validate input fields
+    if not name or not isinstance(salary, (int, float)):
+        return jsonify({
+            "error": "Invalid input. 'name' must be a string and 'salary' must be a number."
+        }), 400
+
+    raise_percentage = 15
+    expected_raise = salary * (raise_percentage / 100)
+    new_salary = salary + expected_raise
+
+    return jsonify({
+        "expected_raise": round(expected_raise, 2),
+    })
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..55e8614
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,2 @@
+functions-framework==1.4.3
+markupsafe==2.0.1