diff --git a/.env.example b/.env.example
new file mode 100644
index 00000000..ad9275ac
--- /dev/null
+++ b/.env.example
@@ -0,0 +1 @@
+FUNCTIONS_ENDPOINT_URL=  #firebase functions url (Firebase emulator or production Cloud Run URL)
\ No newline at end of file
diff --git a/app/main.py b/app/main.py
index 0635c724..62dc885e 100644
--- a/app/main.py
+++ b/app/main.py
@@ -3,7 +3,8 @@
 
 # Local imports from app
 from app.routes import session as session_route
-
+from dotenv import load_dotenv
+load_dotenv()
 
 # Initialize Flask app and enable CORS
 app = Flask(__name__)
diff --git a/app/routes/session.py b/app/routes/session.py
index 1db18593..354a000f 100644
--- a/app/routes/session.py
+++ b/app/routes/session.py
@@ -133,12 +133,13 @@ def calib_results():
                 "screen_width": screen_width,
                 "k": k
             }
-
-            RUXAILAB_WEBHOOK_URL = "https://receivecalibration-ffptzpxikq-uc.a.run.app"
+            
+            FUNCTIONS_ENDPOINT_URL = os.getenv('FUNCTIONS_ENDPOINT_URL')
+            FUNCTIONS_ENDPOINT_URL+='/receiveCalibration'    
 
             print("file_name:", file_name)
 
-            resp = requests.post(RUXAILAB_WEBHOOK_URL, json=payload)
+            resp = requests.post(FUNCTIONS_ENDPOINT_URL, json=payload)
             print("Enviado para RuxaiLab:", resp.status_code, resp.text)
         except Exception as e:
             print("Erro ao enviar para RuxaiLab:", e)
diff --git a/requirements.txt b/requirements.txt
index 72c46fb4..4fa362a1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -30,3 +30,4 @@ threadpoolctl==3.6.0
 tzdata==2025.2
 urllib3==2.7.0
 Werkzeug==3.1.3
+dotenv==0.9.9
\ No newline at end of file