diff --git a/frontend/src/api/services/subscription.ts b/frontend/src/api/services/subscription.ts
index b3b7958e..fd4992c9 100644
--- a/frontend/src/api/services/subscription.ts
+++ b/frontend/src/api/services/subscription.ts
@@ -37,7 +37,7 @@ const CACHE_DURATION = 5 * 60 * 1000; // 5 minutes
 
 export class SubscriptionService {
   private readonly baseUrl = '/tenants';
-  private readonly plansUrl = '/plans/';
+  private readonly plansUrl = '/plans';
 
   // ============================================================================
   // NEW METHODS - Centralized Plans API
diff --git a/services/tenant/app/api/plans.py b/services/tenant/app/api/plans.py
index 5ccbc890..eabb5ebf 100644
--- a/services/tenant/app/api/plans.py
+++ b/services/tenant/app/api/plans.py
@@ -21,7 +21,7 @@ logger = structlog.get_logger()
 router = APIRouter(prefix="/plans", tags=["subscription-plans"])
 
 
-@router.get("/", response_model=Dict[str, Any])
+@router.get("", response_model=Dict[str, Any])
 async def get_available_plans():
     """
     Get all available subscription plans with complete metadata
diff --git a/shared/service_base.py b/shared/service_base.py
index 1f9f12e2..a3215856 100755
--- a/shared/service_base.py
+++ b/shared/service_base.py
@@ -116,7 +116,8 @@ class BaseFastAPIService:
         config = {**default_config, **fastapi_kwargs}
 
         # Create FastAPI app
-        self.app = FastAPI(**config)
+        # Disable redirect_slashes to avoid 307 redirects that break behind HTTPS proxies
+        self.app = FastAPI(**config, redirect_slashes=False)
 
         # Setup unified OpenTelemetry telemetry
         # This single call configures: