```diff
--- test_files/507-original.txt	2025-03-07 19:07:05
+++ test_files/507-modified.txt	2025-03-07 19:07:05
@@ -1,16 +1,15 @@
-import { BackendClient } from "../models/backendClient";
 import { getTestConfig } from "../../../config/getTestConfig";
+import { AxiosBackendClient } from "../models/backendClient";
 
-
-export const getBackendClient = (): BackendClient => {
-    const testConfig = getTestConfig();
-    if (testConfig["COMPOSIO_API_KEY"] === undefined) {
-        throw new Error("COMPOSIO_API_KEY is not set in the test config");
-    }
-    if (testConfig["BACKEND_HERMES_URL"] === undefined) {
-        throw new Error("BACKEND_HERMES_URL is not set in the test config.");
-    }
-    const COMPOSIO_API_KEY = testConfig["COMPOSIO_API_KEY"];
-    const BACKEND_HERMES_URL = testConfig["BACKEND_HERMES_URL"];
-    return new BackendClient(COMPOSIO_API_KEY, BACKEND_HERMES_URL);
-}
\ No newline at end of file
+export const getBackendClient = (): AxiosBackendClient => {
+  const testConfig = getTestConfig();
+  if (testConfig["COMPOSIO_API_KEY"] === undefined) {
+    throw new Error("COMPOSIO_API_KEY is not set in the test config");
+  }
+  if (testConfig["BACKEND_HERMES_URL"] === undefined) {
+    throw new Error("BACKEND_HERMES_URL is not set in the test config.");
+  }
+  const COMPOSIO_API_KEY = testConfig["COMPOSIO_API_KEY"];
+  const BACKEND_HERMES_URL = testConfig["BACKEND_HERMES_URL"];
+  return new AxiosBackendClient(COMPOSIO_API_KEY, BACKEND_HERMES_URL);
+};
```
