diff --git a/dags/data_utils/doc_helpscout.py b/dags/data_utils/doc_helpscout.py
index 43c1d9f..9a96a42 100644
--- a/dags/data_utils/doc_helpscout.py
+++ b/dags/data_utils/doc_helpscout.py
@@ -4,7 +4,7 @@
 from airflow.models import Variable
 from requests.auth import HTTPBasicAuth
 
-from data_utils.grist.grist_helper import osp_grist_api
+from data_utils.grist.grist_helper import get_grist_api
 
 connection_helpscout = BaseHook.get_connection("helpscout")
 assert connection_helpscout.login is not None
@@ -44,7 +44,7 @@ def dump_helpscout_collection_to_grist(collection_id):
     )
     final_table["published"] = final_table["status"] == "published"
 
-    api = osp_grist_api(grist_doc_id)
+    api = get_grist_api("grist_osp", grist_doc_id)
 
     api.sync_table(
         "Articles",
diff --git a/dags/data_utils/grist/_old_pull_ca.py b/dags/data_utils/grist/_old_pull_ca.py
index bba1c8d..d75fcce 100644
--- a/dags/data_utils/grist/_old_pull_ca.py
+++ b/dags/data_utils/grist/_old_pull_ca.py
@@ -1,16 +1,18 @@
+from airflow.models import Variable
+
 from ..postgres_helper import (
     dump_data_to_postgres,
     get_postgres_connection,
 )
-from airflow.models import Variable
-from .grist_helper import fetch_grist_table_data, _get_grist_api
+from .grist_helper import fetch_grist_table_data, get_grist_api
+
 grist_ca_doc_id = Variable.get("grist_ca_doc_id")
 
 
 def fetch_and_dump_data(connection_name):
     # Fetch data from Grist using the new utility function
 
-    api = _get_grist_api("grist_osp", grist_ca_doc_id)
+    api = get_grist_api("grist_osp", grist_ca_doc_id)
     df = fetch_grist_table_data(api, "Suivi_CA_par_clients")
 
     df["Prestations_2024"] = df["Prestations_2024"].astype(str)
diff --git a/dags/data_utils/grist/demo_suite_keycloak.py b/dags/data_utils/grist/demo_suite_keycloak.py
index fa0abf1..a774077 100644
--- a/dags/data_utils/grist/demo_suite_keycloak.py
+++ b/dags/data_utils/grist/demo_suite_keycloak.py
@@ -1,12 +1,14 @@
-from keycloak import KeycloakOpenIDConnection, KeycloakAdmin
+from types import SimpleNamespace
+
+import numpy as np
+import pandas as pd
+import requests
 from airflow.hooks.base import BaseHook
 from airflow.models import Variable
-import pandas as pd
-from types import SimpleNamespace
-from .grist_helper import _get_grist_api
 from grist_api import GristDocAPI
-import requests
-import numpy as np
+from keycloak import KeycloakAdmin, KeycloakOpenIDConnection
+
+from .grist_helper import get_grist_api
 
 # Retrieve the connection object using Airflow's BaseHook
 grist_commercial_doc_id = Variable.get("grist_commercial_doc_id")
@@ -205,9 +207,9 @@ def fetch_existing_grist_prospects(api: GristDocAPI, table_name: str) -> pd.Data
 
 
 def fetch_data_from_keycloak_and_dump_to_grist():
-    api = _get_grist_api("grist_osp", grist_commercial_doc_id)
+    api = get_grist_api("grist_osp", grist_commercial_doc_id)
     existing_df = fetch_existing_grist_prospects(api, grist_table_name)
-    
+
     if keycloak_server_url is None:
         raise ValueError("`keycloak_demo_suite` missing server URL")
     keycloak_username = keycloak_connection.login
diff --git a/dags/data_utils/grist/grist_helper.py b/dags/data_utils/grist/grist_helper.py
index 1a0d711..675bc8d 100644
--- a/dags/data_utils/grist/grist_helper.py
+++ b/dags/data_utils/grist/grist_helper.py
@@ -1,14 +1,14 @@
 from __future__ import annotations
 
-from typing import Literal, List
+import re
+from typing import List, Literal
 
 import pandas as pd
 from airflow.hooks.base import BaseHook
 from grist_api import GristDocAPI
-import re
 
 
-def _get_grist_api(connection_name, doc_id):
+def get_grist_api(connection_name, doc_id):
     connection = BaseHook.get_connection(connection_name)
     grist_api_key = connection.password
     grist_server = connection.host
@@ -37,7 +37,7 @@ def sanitize_identifier(name: str) -> str:
 
 
 def fetch_grist_table_data(
-    doc_api, table_name, errors: Literal["raise", "coerce"] = "coerce"
+    doc_api: GristDocAPI, table_name, errors: Literal["raise", "coerce"] = "coerce"
 ):
     """
     Fetch data from a Grist table and return it as a pandas DataFrame with type validation.
diff --git a/dags/data_utils/grist/suivi_ca.py b/dags/data_utils/grist/suivi_ca.py
index be7041a..b4ed757 100644
--- a/dags/data_utils/grist/suivi_ca.py
+++ b/dags/data_utils/grist/suivi_ca.py
@@ -1,19 +1,20 @@
-from .grist_helper import _get_grist_api
-import pandas as pd
+from airflow.models import Variable
+
 from ..postgres_helper import (
     dump_data_to_postgres,
     get_postgres_connection,
 )
-from airflow.models import Variable
+from .grist_helper import fetch_grist_table_data, get_grist_api
 
 # Retrieve the connection object using Airflow's BaseHook
 grist_ca_doc_id = Variable.get("grist_suivi_ca_doc_id")
+if not isinstance(grist_ca_doc_id, str):
+    raise ValueError("grist_suivi_ca_doc_id variable not set")
+api = get_grist_api("grist_osp", grist_ca_doc_id)
 
 
 def fetch_and_dump_data(connection_name):
-    api = _get_grist_api("grist_osp", grist_ca_doc_id)
-    data = api.fetch_table("SUIVI_CLIENTS")
-    df = pd.DataFrame(data)
+    df = fetch_grist_table_data(api, "SUIVI_CLIENTS")
 
     engine = get_postgres_connection(connection_name, "aggregated_client_data")
     connection = engine.connect()