diff --git a/client/pages/DiscordOAuthCallback.tsx b/client/pages/DiscordOAuthCallback.tsx
index 49e3be49..22333cfc 100644
--- a/client/pages/DiscordOAuthCallback.tsx
+++ b/client/pages/DiscordOAuthCallback.tsx
@@ -1,4 +1,6 @@
 import { useEffect, useState } from "react";
+
+const API_BASE = import.meta.env.VITE_API_BASE || "";
 import { useNavigate, useSearchParams } from "react-router-dom";
 import { useAuth } from "@/contexts/AuthContext";
 import Layout from "@/components/Layout";
@@ -39,7 +41,7 @@ export default function DiscordOAuthCallback() {
         setMessage("Processing authentication...");
 
         // Call backend to handle OAuth exchange
-        const response = await fetch("/api/discord/oauth/callback", {
+        const response = await fetch(`${API_BASE}/api/discord/oauth/callback`, {
           method: "POST",
           headers: { "Content-Type": "application/json" },
           body: JSON.stringify({
diff --git a/client/pages/DiscordVerify.tsx b/client/pages/DiscordVerify.tsx
index ff4b5bcd..9bbb3afe 100644
--- a/client/pages/DiscordVerify.tsx
+++ b/client/pages/DiscordVerify.tsx
@@ -1,4 +1,6 @@
 import { useState, useEffect } from "react";
+
+const API_BASE = import.meta.env.VITE_API_BASE || "";
 import { useNavigate, useSearchParams } from "react-router-dom";
 import { useAuth } from "@/contexts/AuthContext";
 import Layout from "@/components/Layout";
@@ -74,7 +76,7 @@ export default function DiscordVerify() {
     setDiscordUser(null);
 
     try {
-      const response = await fetch("/api/discord/verify-code", {
+      const response = await fetch(`${API_BASE}/api/discord/verify-code`, {
         method: "POST",
         headers: { "Content-Type": "application/json" },
         body: JSON.stringify({
diff --git a/client/pages/DocsSync.tsx b/client/pages/DocsSync.tsx
index 7c8a05e3..ee83126b 100644
--- a/client/pages/DocsSync.tsx
+++ b/client/pages/DocsSync.tsx
@@ -1,4 +1,6 @@
 import { useState } from "react";
+
+const API_BASE = import.meta.env.VITE_API_BASE || "";
 import Layout from "@/components/Layout";
 import { Button } from "@/components/ui/button";
 import {
@@ -34,7 +36,7 @@ export default function DocsSync() {
     setError(null);
 
     try {
-      const response = await fetch("/api/sync-docs-gitbook", {
+      const response = await fetch(`${API_BASE}/api/sync-docs-gitbook`, {
         method: "POST",
         headers: {
           "Content-Type": "application/json",