diff --git a/rendercv/api/functions.py b/rendercv/api/functions.py
index 81208dd7..cfbbe7e9 100644
--- a/rendercv/api/functions.py
+++ b/rendercv/api/functions.py
@@ -9,15 +9,14 @@ from .. import data, renderer
 
 
 def create_contents_of_a_typst_file(
-    input_file_as_a_dict: dict,
+    yaml_file_as_string: str,
 ) -> str | list[dict]:
     """
-    Validate the input file given as a dictionary, generate a Typst file and return it
-    as a string. If there are any validation errors, return them as a list of
-    dictionaries.
+    Validate the input file given as a string, generate a Typst file and return it as a
+    string. If there are any validation errors, return them as a list of dictionaries.
 
     Args:
-        input_file_as_a_dict: The input file as a dictionary.
+        yaml_file_as_string: The input file as a string.
 
     Returns:
         The Typst file as a string or a list of dictionaries that contain the error
@@ -25,6 +24,7 @@ def create_contents_of_a_typst_file(
     """
 
     try:
+        input_file_as_a_dict = data.read_a_yaml_file(yaml_file_as_string)
         data_model = data.validate_input_dictionary_and_return_the_data_model(
             input_file_as_a_dict,
         )