diff --git a/gui/src/config.ts b/gui/src/config.ts
index 04d40034..86cdc63b 100644
--- a/gui/src/config.ts
+++ b/gui/src/config.ts
@@ -1,4 +1,4 @@
-import { Maybe } from '@apextoaster/js-utils';
+import { doesExist, Maybe } from '@apextoaster/js-utils';
 
 import { Img2ImgParams, InpaintParams, ModelParams, OutpaintParams, STATUS_SUCCESS, Txt2ImgParams, UpscaleParams } from './client.js';
 
@@ -76,3 +76,14 @@ export async function loadConfig(): Promise<Config> {
     throw new Error('could not load config');
   }
 }
+
+export function getApiRoot(config: Config): string {
+  const query = new URLSearchParams(window.location.search);
+  const api = query.get('api');
+
+  if (doesExist(api)) {
+    return api;
+  } else {
+    return config.api.root;
+  }
+}
diff --git a/gui/src/main.tsx b/gui/src/main.tsx
index 308f4340..a1cb00d5 100644
--- a/gui/src/main.tsx
+++ b/gui/src/main.tsx
@@ -1,5 +1,5 @@
 /* eslint-disable no-console */
-import { doesExist, mustDefault, mustExist } from '@apextoaster/js-utils';
+import { mustDefault, mustExist } from '@apextoaster/js-utils';
 import { merge } from 'lodash';
 import * as React from 'react';
 import ReactDOM from 'react-dom/client';
@@ -13,20 +13,9 @@ import { ParamsVersionError } from './components/error/ParamsVersion.js';
 import { ServerParamsError } from './components/error/ServerParams.js';
 import { OnnxError } from './components/OnnxError.js';
 import { OnnxWeb } from './components/OnnxWeb.js';
-import { Config, loadConfig, PARAM_VERSION } from './config.js';
+import { getApiRoot, loadConfig, PARAM_VERSION } from './config.js';
 import { ClientContext, ConfigContext, createStateSlices, OnnxState, StateContext } from './state.js';
 
-export function getApiRoot(config: Config): string {
-  const query = new URLSearchParams(window.location.search);
-  const api = query.get('api');
-
-  if (doesExist(api)) {
-    return api;
-  } else {
-    return config.api.root;
-  }
-}
-
 export async function main() {
   // load config from GUI server
   const config = await loadConfig();