diff --git a/src/utils/api.ts b/src/utils/api.ts
index 1c57d5f..fcb9a2f 100644
--- a/src/utils/api.ts
+++ b/src/utils/api.ts
@@ -30,15 +30,16 @@ export async function apiJson<T>(path: string, init?: RequestInit): Promise<T> {
 }
 
 function normalizeLoopbackHost(rawUrl: string): string {
+  const cleaned = rawUrl.trim().replace(/^['"`\s]+|['"`\s]+$/g, "");
   try {
-    const url = new URL(rawUrl, window.location.origin);
+    const url = new URL(cleaned, window.location.origin);
     const loopbacks = new Set(["127.0.0.1", "localhost", "::1"]);
     if (loopbacks.has(url.hostname) && !loopbacks.has(window.location.hostname)) {
       url.hostname = window.location.hostname;
     }
     return url.toString().replace(/\/+$/, "");
   } catch {
-    return rawUrl.replace(/\/+$/, "");
+    return cleaned.replace(/\/+$/, "");
   }
 }