diff --git a/studio/backend/core/inference/safetensors_agentic.py b/studio/backend/core/inference/safetensors_agentic.py
index edde2b0bda..a300e986b3 100644
--- a/studio/backend/core/inference/safetensors_agentic.py
+++ b/studio/backend/core/inference/safetensors_agentic.py
@@ -144,6 +144,7 @@ def run_safetensors_tool_loop(
         inject_respond_tool,
         is_respond_call,
     )
+
     tools, _respond_injected = inject_respond_tool(tools)
 
     tool_call_history: list[tuple[str, bool]] = []
diff --git a/studio/backend/tests/test_safetensors_tool_loop.py b/studio/backend/tests/test_safetensors_tool_loop.py
index 692dfda786..59d67e1e9e 100644
--- a/studio/backend/tests/test_safetensors_tool_loop.py
+++ b/studio/backend/tests/test_safetensors_tool_loop.py
@@ -537,9 +537,7 @@ class TestRespondToolHelpers:
         assert out is base
 
     def test_is_respond_call(self):
-        assert is_respond_call(
-            {"function": {"name": "respond", "arguments": "{}"}}
-        )
+        assert is_respond_call({"function": {"name": "respond", "arguments": "{}"}})
         assert not is_respond_call(
             {"function": {"name": "web_search", "arguments": "{}"}}
         )
@@ -625,13 +623,15 @@ class TestRespondToolUnwrap:
         # When the caller supplies a real "respond" tool, the synthetic
         # one is NOT injected and the call goes through execute_tool
         # like any other tool, preserving the client's semantics.
-        turn_iter = iter([
+        turn_iter = iter(
             [
-                '<tool_call>{"name":"respond",'
-                '"arguments":{"message":"hi"}}</tool_call>'
-            ],
-            ["thanks"],
-        ])
+                [
+                    '<tool_call>{"name":"respond",'
+                    '"arguments":{"message":"hi"}}</tool_call>'
+                ],
+                ["thanks"],
+            ]
+        )
 
         def _gen(_messages):
             try: