diff --git a/packages/app/src/app.tsx b/packages/app/src/app.tsx
index 9a282bbb70..7c4e7ab841 100644
--- a/packages/app/src/app.tsx
+++ b/packages/app/src/app.tsx
@@ -284,6 +284,7 @@ export function AppInterface(props: {
               <Dynamic
                 component={props.router ?? Router}
                 root={(routerProps) => <RouterRoot appChildren={props.children}>{routerProps.children}</RouterRoot>}
+                base={import.meta.env.BASE_URL.replace(/\/$/, "") || undefined}
               >
                 <Route path="/" component={HomeRoute} />
                 <Route path="/:dir" component={DirectoryLayout}>
diff --git a/packages/app/src/entry.tsx b/packages/app/src/entry.tsx
index b5cbed6e75..f62dc78b02 100644
--- a/packages/app/src/entry.tsx
+++ b/packages/app/src/entry.tsx
@@ -99,9 +99,11 @@ if (!(root instanceof HTMLElement) && import.meta.env.DEV) {
 
 const getCurrentUrl = () => {
   if (location.hostname.includes("opencode.ai")) return "http://localhost:4096"
+  const serverBaseUrl =
+    "/" + (import.meta.env.VITE_OPENCODE_SERVER_BASE_URL ?? "/").replace(/^\//, "").replace(/\/$/, "")
   if (import.meta.env.DEV)
-    return `http://${import.meta.env.VITE_OPENCODE_SERVER_HOST ?? "localhost"}:${import.meta.env.VITE_OPENCODE_SERVER_PORT ?? "4096"}`
-  return location.origin
+    return `http://${import.meta.env.VITE_OPENCODE_SERVER_HOST ?? "localhost"}:${import.meta.env.VITE_OPENCODE_SERVER_PORT ?? "4096"}{serverBaseUrl}`
+  return location.origin + serverBaseUrl
 }
 
 const getDefaultUrl = () => {
diff --git a/packages/app/src/env.d.ts b/packages/app/src/env.d.ts
index 89721f34f2..c8d0a7d241 100644
--- a/packages/app/src/env.d.ts
+++ b/packages/app/src/env.d.ts
@@ -1,6 +1,7 @@
 import "solid-js"
 
 interface ImportMetaEnv {
+  readonly BASE_URL: string
   readonly VITE_OPENCODE_SERVER_HOST: string
   readonly VITE_OPENCODE_SERVER_PORT: string
 }
diff --git a/packages/app/vite.config.ts b/packages/app/vite.config.ts
index 6a29ae6345..9c0685aa03 100644
--- a/packages/app/vite.config.ts
+++ b/packages/app/vite.config.ts
@@ -2,6 +2,7 @@ import { defineConfig } from "vite"
 import desktopPlugin from "./vite"
 
 export default defineConfig({
+  base: process.env.VITE_BASE_URL || "/",
   plugins: [desktopPlugin] as any,
   server: {
     host: "0.0.0.0",