diff --git a/.env b/.env
index aeea59e..fd32a98 100644
--- a/.env
+++ b/.env
@@ -1,5 +1,5 @@
-VITE_API_BASE_URL=http://127.0.0.1:3000/v1
-VITE_DEV_BASE_URL=http://127.0.0.1:3000/v1
+#VITE_API_BASE_URL=http://127.0.0.1:3000/v1
+#VITE_DEV_BASE_URL=http://127.0.0.1:3000/v1
 
 ## enables choosing units and lisenced account call limits
 # VITE_APP_ENABLE_ACCOUNT_LIMITS_ALL=true
diff --git a/src/api/constants.ts b/src/api/constants.ts
index 4e26269..895f3b5 100644
--- a/src/api/constants.ts
+++ b/src/api/constants.ts
@@ -1,3 +1,4 @@
+import { hasValue } from "src/utils";
 import type {
   Currency,
   ElevenLabsOptions,
@@ -37,8 +38,11 @@ declare global {
 }
 
 /** https://vitejs.dev/guide/env-and-mode.html#env-files */
-export const API_BASE_URL =
+const CONFIGURED_API_BASE_URL =
   window.JAMBONZ?.API_BASE_URL || import.meta.env.VITE_API_BASE_URL;
+export const API_BASE_URL = hasValue(CONFIGURED_API_BASE_URL)
+  ? CONFIGURED_API_BASE_URL
+  : `${window.location.protocol}//${window.location.hostname}/api/v1`;
 
 /** Serves mock API responses from a local dev API server */
 export const DEV_BASE_URL = import.meta.env.VITE_DEV_BASE_URL;