diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index c761ace..10b315a 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -10,7 +10,7 @@ concurrency:
   cancel-in-progress: false
 
 permissions:
-  contents: read
+  contents: write
   id-token: write
   packages: write
   pull-requests: write
@@ -205,3 +205,20 @@ jobs:
             -auto-approve \
             -var-file=${{ steps.paths.outputs.TFVARS }} \
             -input=false
+
+      - name: Update GitHub Repo Description with Frontend URL (prod only)
+        if: github.ref == 'refs/heads/main'
+        run: |
+          cd terraform-infra
+          FRONTEND_URL=$(terraform output -raw app_engine_url 2>/dev/null || echo "")
+          if [ -n "$FRONTEND_URL" ]; then
+            echo "Updating GitHub repo description with URL: $FRONTEND_URL"
+            gh api repos/${{ github.repository }} \
+              --method PATCH \
+              -f homepage="$FRONTEND_URL" \
+              -f description="Guidon - Serverless Discord Bot for collaborative drawing | Frontend: $FRONTEND_URL"
+          else
+            echo "Frontend URL not found in Terraform outputs, skipping update"
+          fi
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/services/canvas-service/shared/auth_utils.py b/services/canvas-service/shared/auth_utils.py
index 844501a..8e24b8e 100644
--- a/services/canvas-service/shared/auth_utils.py
+++ b/services/canvas-service/shared/auth_utils.py
@@ -14,28 +14,14 @@ def get_service_url_from_request(request: Request) -> Optional[str]:
         request: Flask request object
 
     Returns:
-        Full service URL including function path for Cloud Functions
-        (e.g., https://region-project.cloudfunctions.net/function-name)
-        or Cloud Run URL (e.g., https://service-name-xxx.a.run.app)
+        Full service URL (e.g., https://service-name-xxx.a.run.app) or None
     """
     host = request.headers.get('Host')
     if host:
         scheme = request.headers.get('X-Forwarded-Proto', 'https')
         if ':' in host:
             host = host.split(':')[0]
-        
-        base_url = f"{scheme}://{host}"
-        
-        # For Cloud Functions Gen2, include the function name (first path segment)
-        # Request path like: /function-name/api/endpoint
-        # We want: https://domain.cloudfunctions.net/function-name
-        if 'cloudfunctions.net' in host and request.path:
-            path_parts = request.path.strip('/').split('/')
-            if path_parts and path_parts[0]:
-                # First segment is the function name
-                base_url = f"{base_url}/{path_parts[0]}"
-        
-        return base_url
+        return f"{scheme}://{host}"
     return None
 
 
diff --git a/services/shared/auth_utils.py b/services/shared/auth_utils.py
index 844501a..8e24b8e 100644
--- a/services/shared/auth_utils.py
+++ b/services/shared/auth_utils.py
@@ -14,28 +14,14 @@ def get_service_url_from_request(request: Request) -> Optional[str]:
         request: Flask request object
 
     Returns:
-        Full service URL including function path for Cloud Functions
-        (e.g., https://region-project.cloudfunctions.net/function-name)
-        or Cloud Run URL (e.g., https://service-name-xxx.a.run.app)
+        Full service URL (e.g., https://service-name-xxx.a.run.app) or None
     """
     host = request.headers.get('Host')
     if host:
         scheme = request.headers.get('X-Forwarded-Proto', 'https')
         if ':' in host:
             host = host.split(':')[0]
-        
-        base_url = f"{scheme}://{host}"
-        
-        # For Cloud Functions Gen2, include the function name (first path segment)
-        # Request path like: /function-name/api/endpoint
-        # We want: https://domain.cloudfunctions.net/function-name
-        if 'cloudfunctions.net' in host and request.path:
-            path_parts = request.path.strip('/').split('/')
-            if path_parts and path_parts[0]:
-                # First segment is the function name
-                base_url = f"{base_url}/{path_parts[0]}"
-        
-        return base_url
+        return f"{scheme}://{host}"
     return None
 
 
diff --git a/services/user-manager/shared/auth_utils.py b/services/user-manager/shared/auth_utils.py
index 844501a..8e24b8e 100644
--- a/services/user-manager/shared/auth_utils.py
+++ b/services/user-manager/shared/auth_utils.py
@@ -14,28 +14,14 @@ def get_service_url_from_request(request: Request) -> Optional[str]:
         request: Flask request object
 
     Returns:
-        Full service URL including function path for Cloud Functions
-        (e.g., https://region-project.cloudfunctions.net/function-name)
-        or Cloud Run URL (e.g., https://service-name-xxx.a.run.app)
+        Full service URL (e.g., https://service-name-xxx.a.run.app) or None
     """
     host = request.headers.get('Host')
     if host:
         scheme = request.headers.get('X-Forwarded-Proto', 'https')
         if ':' in host:
             host = host.split(':')[0]
-        
-        base_url = f"{scheme}://{host}"
-        
-        # For Cloud Functions Gen2, include the function name (first path segment)
-        # Request path like: /function-name/api/endpoint
-        # We want: https://domain.cloudfunctions.net/function-name
-        if 'cloudfunctions.net' in host and request.path:
-            path_parts = request.path.strip('/').split('/')
-            if path_parts and path_parts[0]:
-                # First segment is the function name
-                base_url = f"{base_url}/{path_parts[0]}"
-        
-        return base_url
+        return f"{scheme}://{host}"
     return None
 
 
diff --git a/terraform-infra/main.tf b/terraform-infra/main.tf
index 76adb97..79be8b3 100644
--- a/terraform-infra/main.tf
+++ b/terraform-infra/main.tf
@@ -423,6 +423,15 @@ resource "google_secret_manager_secret_iam_member" "gcs_bucket_access" {
   depends_on = [module.service_accounts]
 }
 
+# Permissions IAM pour le service account cloud-functions sur le bucket canvas-snapshots
+resource "google_storage_bucket_iam_member" "canvas_bucket_admin" {
+  bucket = module.gcs_buckets["canvas-snapshots"].bucket_name
+  role   = "roles/storage.objectAdmin"
+  member = module.service_accounts["cloud-functions"].member
+
+  depends_on = [module.gcs_buckets, module.service_accounts]
+}
+
 # ============================================================================
 # PHASE 1 : Secrets basés sur l'API Gateway (valeurs temporaires)
 # ============================================================================
@@ -562,4 +571,28 @@ resource "google_secret_manager_secret_iam_member" "gcp_project_id_access" {
   member    = module.service_accounts["cloud-functions"].member
 
   depends_on = [module.service_accounts]
+}
+
+# ========================================
+# OUTPUTS
+# ========================================
+
+output "api_gateway_url" {
+  description = "URL de l'API Gateway"
+  value       = module.api_gateway.gateway_url
+}
+
+output "app_engine_url" {
+  description = "URL du frontend App Engine"
+  value       = module.app_engine.app_url
+}
+
+output "project_id" {
+  description = "ID du projet GCP"
+  value       = var.project_id
+}
+
+output "region" {
+  description = "Région GCP"
+  value       = var.region
 }
\ No newline at end of file