diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8d9fb3e..87bd00b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,12 @@
 
 All notable changes to `@escalated-dev/escalated` will be documented in this file.
 
+## [Unreleased]
+
+### Fixed
+- Widget's API endpoint path is now configurable via `data-widget-path` (on the script tag) / `widgetPath` option (on `createEscalated`). Default stays `/support/widget` for backward compatibility. Unblocks NestJS hosts where the base path isn't `/support`.
+- `useChat()` threads the resolved `widgetPath` through all six chat API endpoints; Agent `TicketShow`, `ActiveChatsPanel`, `ChatQueue` read `page.props.escalated?.prefix` to build the right path on the agent side.
+
 ## [0.7.0] - 2026-04-05
 
 ### Added
diff --git a/src/components/ActiveChatsPanel.vue b/src/components/ActiveChatsPanel.vue
index e0e65d2..ae77e19 100644
--- a/src/components/ActiveChatsPanel.vue
+++ b/src/components/ActiveChatsPanel.vue
@@ -1,5 +1,6 @@
 <script setup>
 import { ref, computed, inject, onMounted, onUnmounted } from 'vue';
+import { usePage } from '@inertiajs/vue3';
 import { useI18n } from '../composables/useI18n';
 import { useChat } from '../composables/useChat';
 import { timeAgo } from '../utils/formatting';
@@ -88,8 +89,13 @@ function chatInitials(chat) {
         .slice(0, 2);
 }
 
-// Real-time: listen for new chats assigned to this agent
-const { subscribeToChatQueue } = useChat();
+// Real-time: listen for new chats assigned to this agent. Read the
+// host framework's route prefix from Inertia page props (default
+// 'support') so chat API calls resolve correctly on NestJS backends
+// that use '/escalated/widget' instead of '/support/widget'.
+const page = usePage();
+const routePrefix = page.props.escalated?.prefix || 'support';
+const { subscribeToChatQueue } = useChat({ widgetPath: `/${routePrefix}/widget` });
 
 onMounted(() => {
     subscribeToChatQueue({
diff --git a/src/components/ChatQueue.vue b/src/components/ChatQueue.vue
index 6ddc589..63d9a77 100644
--- a/src/components/ChatQueue.vue
+++ b/src/components/ChatQueue.vue
@@ -1,5 +1,6 @@
 <script setup>
 import { ref, computed, inject, onMounted, onUnmounted } from 'vue';
+import { usePage } from '@inertiajs/vue3';
 import { useI18n } from '../composables/useI18n';
 import { useChat } from '../composables/useChat';
 
@@ -66,8 +67,13 @@ async function acceptChat(session) {
     }
 }
 
-// Subscribe to queue for real-time updates
-const { subscribeToChatQueue } = useChat();
+// Subscribe to queue for real-time updates. Read the host framework's
+// route prefix from Inertia page props so chat API calls resolve
+// correctly on NestJS backends ('/escalated/widget') as well as every
+// other framework ('/support/widget').
+const page = usePage();
+const routePrefix = page.props.escalated?.prefix || 'support';
+const { subscribeToChatQueue } = useChat({ widgetPath: `/${routePrefix}/widget` });
 
 onMounted(() => {
     subscribeToChatQueue({
diff --git a/src/composables/useChat.js b/src/composables/useChat.js
index b428b58..e993aa6 100644
--- a/src/composables/useChat.js
+++ b/src/composables/useChat.js
@@ -6,8 +6,17 @@ import { useRealtime } from './useRealtime';
  *
  * Provides methods to start, send messages, end, and rate chat sessions,
  * plus real-time subscription via useRealtime.
+ *
+ * @param {Object} [options]
+ * @param {string} [options.widgetPath] - Path prefix under which the host
+ *   framework mounts widget routes. Defaults to `/support/widget` which
+ *   matches every host-adapter plugin (Laravel / Rails / Django / Adonis /
+ *   WordPress / Filament / Symfony / .NET / Go / Spring / Phoenix). On a
+ *   NestJS backend, pass `/escalated/widget` (or read from whatever
+ *   configuration channel the host app exposes to the client).
  */
-export function useChat() {
+export function useChat(options = {}) {
+    const widgetPath = options.widgetPath ?? '/support/widget';
     const connectionState = ref('disconnected'); // disconnected | connecting | connected
     const messageBuffer = ref([]);
 
@@ -40,7 +49,7 @@ export function useChat() {
      * @returns {Promise<Object>} The created chat session
      */
     async function startChat(data) {
-        return apiRequest('POST', '/support/widget/chat/start', data);
+        return apiRequest('POST', `${widgetPath}/chat/start`, data);
     }
 
     /**
@@ -50,7 +59,7 @@ export function useChat() {
      * @returns {Promise<Object>}
      */
     async function sendMessage(sessionId, body) {
-        const message = await apiRequest('POST', `/support/widget/chat/${sessionId}/messages`, body);
+        const message = await apiRequest('POST', `${widgetPath}/chat/${sessionId}/messages`, body);
         return message;
     }
 
@@ -65,7 +74,7 @@ export function useChat() {
         if (now - lastTypingSent < 3000) return;
         lastTypingSent = now;
         try {
-            await apiRequest('POST', `/support/widget/chat/${sessionId}/typing`);
+            await apiRequest('POST', `${widgetPath}/chat/${sessionId}/typing`);
         } catch {
             // silently ignore typing failures
         }
@@ -77,7 +86,7 @@ export function useChat() {
      * @returns {Promise<Object>}
      */
     async function endChat(sessionId) {
-        return apiRequest('POST', `/support/widget/chat/${sessionId}/end`);
+        return apiRequest('POST', `${widgetPath}/chat/${sessionId}/end`);
     }
 
     /**
@@ -88,7 +97,7 @@ export function useChat() {
      * @returns {Promise<Object>}
      */
     async function rateChat(sessionId, rating, comment = '') {
-        return apiRequest('POST', `/support/widget/chat/${sessionId}/rate`, { rating, comment });
+        return apiRequest('POST', `${widgetPath}/chat/${sessionId}/rate`, { rating, comment });
     }
 
     /**
@@ -98,7 +107,7 @@ export function useChat() {
      */
     async function checkAvailability(departmentId = null) {
         const query = departmentId ? `?department_id=${departmentId}` : '';
-        return apiRequest('GET', `/support/widget/chat/availability${query}`);
+        return apiRequest('GET', `${widgetPath}/chat/availability${query}`);
     }
 
     /**
diff --git a/src/pages/Agent/TicketShow.vue b/src/pages/Agent/TicketShow.vue
index 1fb31e1..06fa85a 100644
--- a/src/pages/Agent/TicketShow.vue
+++ b/src/pages/Agent/TicketShow.vue
@@ -37,6 +37,10 @@ const props = defineProps({
 
 const page = usePage();
 const isLightAgent = computed(() => page.props.escalated?.agent_type === 'light');
+// Route prefix the host framework mounts Escalated under. Defaults to
+// `support`, matching every host-adapter plugin. NestJS uses `escalated`.
+const routePrefix = computed(() => page.props.escalated?.prefix || 'support');
+const widgetPath = computed(() => `/${routePrefix.value}/widget`);
 const activeTab = ref(isLightAgent.value ? 'note' : 'reply');
 const showShortcutHelp = ref(false);
 const replyComposerRef = ref(null);
@@ -78,8 +82,10 @@ const isChatMode = computed(() => props.ticket.channel === 'chat' && props.ticke
 const chatMessages = ref(props.ticket.chat_messages || []);
 const chatTypingUser = ref(null);
 
-// Subscribe to chat channel for real-time messages
-const { subscribeToChat } = useChat();
+// Subscribe to chat channel for real-time messages. Pass widgetPath so
+// useChat's API calls resolve against whatever prefix the host framework
+// serves Escalated under (config on NestJS, default /support elsewhere).
+const { subscribeToChat } = useChat({ widgetPath: widgetPath.value });
 let chatTypingTimer = null;
 
 onMounted(() => {
@@ -324,10 +330,10 @@ onMounted(() => {
                         <ChatComposer
                             :session-id="ticket.chat_session_id"
                             :send-endpoint="
-                                ticket.chat_session_id ? `/support/widget/chat/${ticket.chat_session_id}/messages` : ''
+                                ticket.chat_session_id ? `${widgetPath}/chat/${ticket.chat_session_id}/messages` : ''
                             "
                             :typing-endpoint="
-                                ticket.chat_session_id ? `/support/widget/chat/${ticket.chat_session_id}/typing` : ''
+                                ticket.chat_session_id ? `${widgetPath}/chat/${ticket.chat_session_id}/typing` : ''
                             "
                             allow-notes
                             @send="onChatSend"
diff --git a/src/widget/EscalatedWidget.vue b/src/widget/EscalatedWidget.vue
index cc02784..eb24b67 100644
--- a/src/widget/EscalatedWidget.vue
+++ b/src/widget/EscalatedWidget.vue
@@ -4,6 +4,13 @@ import { sanitizeHtml } from '../utils/sanitizeHtml';
 
 const props = defineProps({
     baseUrl: { type: String, default: '' },
+    // Path prefix the host framework mounts widget routes under. Defaults
+    // to /support/widget which matches every host-adapter plugin
+    // (Laravel / Rails / Django / Adonis / WordPress / Filament /
+    // Symfony / .NET / Go / Spring / Phoenix). The NestJS reference
+    // mounts at /escalated/widget, so embedders on a NestJS backend
+    // should override this with data-widget-path="/escalated/widget".
+    widgetPath: { type: String, default: '/support/widget' },
     initialColor: { type: String, default: '#4F46E5' },
     initialPosition: { type: String, default: 'bottom-right' },
 });
@@ -64,7 +71,7 @@ const statusResult = ref(null);
 let searchTimer = null;
 
 async function api(method, apiPath, body = null) {
-    const url = `${props.baseUrl}/support/widget${apiPath}`;
+    const url = `${props.baseUrl}${props.widgetPath}${apiPath}`;
     const opts = {
         method,
         headers: {
diff --git a/src/widget/index.js b/src/widget/index.js
index fe52fa5..c581fea 100644
--- a/src/widget/index.js
+++ b/src/widget/index.js
@@ -7,6 +7,10 @@ import EscalatedWidget from './EscalatedWidget.vue';
 
     const config = {
         baseUrl: scriptTag?.getAttribute('data-base-url') || globalConfig.baseUrl || '',
+        // Host-framework-specific path prefix. Every plugin except the NestJS
+        // reference mounts at /support/widget; NestJS mounts at
+        // /escalated/widget. Set via data-widget-path on NestJS backends.
+        widgetPath: scriptTag?.getAttribute('data-widget-path') || globalConfig.widgetPath || '/support/widget',
         color: scriptTag?.getAttribute('data-color') || globalConfig.color || '#4F46E5',
         position: scriptTag?.getAttribute('data-position') || globalConfig.position || 'bottom-right',
     };
@@ -29,6 +33,7 @@ import EscalatedWidget from './EscalatedWidget.vue';
         render() {
             return h(EscalatedWidget, {
                 baseUrl: config.baseUrl,
+                widgetPath: config.widgetPath,
                 initialColor: config.color,
                 initialPosition: config.position,
             });
diff --git a/tests/components/ActiveChatsPanel.test.js b/tests/components/ActiveChatsPanel.test.js
index 4cee17b..b29bcbd 100644
--- a/tests/components/ActiveChatsPanel.test.js
+++ b/tests/components/ActiveChatsPanel.test.js
@@ -12,6 +12,10 @@ vi.mock('../../src/composables/useChat', () => ({
     }),
 }));
 
+vi.mock('@inertiajs/vue3', () => ({
+    usePage: () => ({ props: { escalated: { prefix: 'support' } } }),
+}));
+
 function mountPanel(props = {}, dark = false) {
     return mount(ActiveChatsPanel, {
         props: {