diff --git a/web/src/components/ChatSidebar.tsx b/web/src/components/ChatSidebar.tsx
index 38f1cf80abd..c311673fafc 100644
--- a/web/src/components/ChatSidebar.tsx
+++ b/web/src/components/ChatSidebar.tsx
@@ -30,6 +30,7 @@ import { Card } from "@/components/ui/card";
 import { ModelPickerDialog } from "@/components/ModelPickerDialog";
 import { ToolCall, type ToolEntry } from "@/components/ToolCall";
 import { GatewayClient, type ConnectionState } from "@/lib/gatewayClient";
+import { HERMES_BASE_PATH } from "@/lib/api";
 
 import { cn } from "@/lib/utils";
 import { AlertCircle, ChevronDown, RefreshCw } from "lucide-react";
@@ -160,7 +161,7 @@ export function ChatSidebar({ channel, className }: ChatSidebarProps) {
     const proto = window.location.protocol === "https:" ? "wss:" : "ws:";
     const qs = new URLSearchParams({ token, channel });
     const ws = new WebSocket(
-      `${proto}//${window.location.host}/api/events?${qs.toString()}`,
+      `${proto}//${window.location.host}${HERMES_BASE_PATH}/api/events?${qs.toString()}`,
     );
 
     // `unmounting` suppresses the banner during cleanup — `ws.close()`
diff --git a/web/src/lib/gatewayClient.ts b/web/src/lib/gatewayClient.ts
index fa58841ce18..9092ef2d32d 100644
--- a/web/src/lib/gatewayClient.ts
+++ b/web/src/lib/gatewayClient.ts
@@ -13,6 +13,8 @@
  *   await gw.request("prompt.submit", { session_id, text: "hi" })
  */
 
+import { HERMES_BASE_PATH } from "@/lib/api";
+
 export type GatewayEventName =
   | "gateway.ready"
   | "session.info"
@@ -117,7 +119,7 @@ export class GatewayClient {
 
     const scheme = location.protocol === "https:" ? "wss:" : "ws:";
     const ws = new WebSocket(
-      `${scheme}//${location.host}/api/ws?token=${encodeURIComponent(resolved)}`,
+      `${scheme}//${location.host}${HERMES_BASE_PATH}/api/ws?token=${encodeURIComponent(resolved)}`,
     );
     this.ws = ws;
 
diff --git a/web/src/pages/ChatPage.tsx b/web/src/pages/ChatPage.tsx
index 6fd32fa43fc..3e3c2e3268b 100644
--- a/web/src/pages/ChatPage.tsx
+++ b/web/src/pages/ChatPage.tsx
@@ -24,6 +24,7 @@ import { Terminal } from "@xterm/xterm";
 import "@xterm/xterm/css/xterm.css";
 import { Button } from "@nous-research/ui/ui/components/button";
 import { Typography } from "@/components/NouiTypography";
+import { HERMES_BASE_PATH } from "@/lib/api";
 import { cn } from "@/lib/utils";
 import { Copy, PanelRight, X } from "lucide-react";
 import { useCallback, useEffect, useMemo, useRef, useState } from "react";
@@ -44,7 +45,7 @@ function buildWsUrl(
   const proto = window.location.protocol === "https:" ? "wss:" : "ws:";
   const qs = new URLSearchParams({ token, channel });
   if (resume) qs.set("resume", resume);
-  return `${proto}//${window.location.host}/api/pty?${qs.toString()}`;
+  return `${proto}//${window.location.host}${HERMES_BASE_PATH}/api/pty?${qs.toString()}`;
 }
 
 // Channel id ties this chat tab's PTY child (publisher) to its sidebar