diff --git a/src/ui/src/services/extension_service.ts b/src/ui/src/services/extension_service.ts
index 9282fc18..e926c813 100644
--- a/src/ui/src/services/extension_service.ts
+++ b/src/ui/src/services/extension_service.ts
@@ -22,7 +22,7 @@ import {ExtensionCommand} from '../common/extension_command';
 import {Extension} from '../common/types';
 
 const EXTERNAL_GET_EXTENSIONS_API_PATH = '/api/v1/get_extensions';
-const EXTERNAL_SEND_CMD_API_PATH = '/apipost/v1/send_command';
+const EXTERNAL_SEND_CMD_API_PATH = '/api/v1/send_command';
 
 /**
  * Service for managing model explorer extensions.
@@ -40,15 +40,9 @@ export class ExtensionService {
   async sendCommandToExtension<T>(
     cmd: ExtensionCommand,
   ): Promise<{cmdResp?: T; otherError?: string}> {
-    const requestData: RequestInit = {
-      method: 'POST',
-      headers: {
-        'Content-Type': 'application/json',
-      },
-    };
-    requestData.body = JSON.stringify(cmd);
     try {
-      const resp = await fetch(EXTERNAL_SEND_CMD_API_PATH, requestData);
+      const url = `${EXTERNAL_SEND_CMD_API_PATH}?json=${JSON.stringify(cmd)}`;
+      const resp = await fetch(url);
       if (!resp.ok) {
         return {otherError: `Failed to convert model. ${resp.status}`};
       }