diff --git a/frontend/src/lib/api.ts b/frontend/src/lib/api.ts
index 150eec1..a205378 100644
--- a/frontend/src/lib/api.ts
+++ b/frontend/src/lib/api.ts
@@ -43,13 +43,19 @@ interface ApiQueryResult {
   available: boolean;
 }
 
+const PRODUCTION_API_URL = "https://thesphere-production-4aea.up.railway.app";
+
 function getApiBaseUrl() {
   if (process.env.NEXT_PUBLIC_API_BASE_URL) {
     return process.env.NEXT_PUBLIC_API_BASE_URL;
   }
 
   if (typeof window !== "undefined") {
-    return `${window.location.protocol}//${window.location.hostname}:8000`;
+    const host = window.location.hostname;
+    if (host !== "localhost" && host !== "127.0.0.1") {
+      return PRODUCTION_API_URL;
+    }
+    return `${window.location.protocol}//${host}:8000`;
   }
 
   return "http://localhost:8000";
diff --git a/frontend/src/lib/intelligence/client.ts b/frontend/src/lib/intelligence/client.ts
index 41fee44..b7b1ce8 100644
--- a/frontend/src/lib/intelligence/client.ts
+++ b/frontend/src/lib/intelligence/client.ts
@@ -82,6 +82,8 @@ export interface IntelligenceClientOptions {
   signal?: AbortSignal;
 }
 
+const PRODUCTION_API_URL = "https://thesphere-production-4aea.up.railway.app";
+
 function resolveBaseUrl(explicit: string | undefined): string {
   if (explicit) {
     return explicit.replace(/\/$/, "");
@@ -90,7 +92,11 @@ function resolveBaseUrl(explicit: string | undefined): string {
     return process.env.NEXT_PUBLIC_API_BASE_URL.replace(/\/$/, "");
   }
   if (typeof window !== "undefined") {
-    return `${window.location.protocol}//${window.location.hostname}:8000`;
+    const host = window.location.hostname;
+    if (host !== "localhost" && host !== "127.0.0.1") {
+      return PRODUCTION_API_URL;
+    }
+    return `${window.location.protocol}//${host}:8000`;
   }
   return "http://localhost:8000";
 }