From b19b1c7d710d194c467280f73a29dc9697e62a94 Mon Sep 17 00:00:00 2001
From: Google Team Member <genai-sdk-bot@google.com>
Date: Wed, 8 Oct 2025 14:38:06 -0700
Subject: [PATCH] feat: GenAI SDK client - Support agent engine sandbox http
 request in genai sdk

PiperOrigin-RevId: 816865842
---
 google/genai/_api_client.py | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/google/genai/_api_client.py b/google/genai/_api_client.py
index 329d5fc01..37cfd2fcb 100644
--- a/google/genai/_api_client.py
+++ b/google/genai/_api_client.py
@@ -1056,11 +1056,16 @@ def _build_request(
       _common.recursive_dict_update(
           request_dict, patched_http_options.extra_body
       )
-
-    url = join_url_path(
-        base_url,
-        versioned_path,
-    )
+    url = base_url
+    if (
+        not self.custom_base_url
+        or (self.project and self.location)
+        or self.api_key
+    ):
+      url = join_url_path(
+          base_url,
+          versioned_path,
+      )
 
     if self.api_key and self.api_key.startswith('auth_tokens/'):
       raise EphemeralTokenAPIKeyError(