diff --git a/libs/langchain_v1/langchain/agents/middleware/human_in_the_loop.py b/libs/langchain_v1/langchain/agents/middleware/human_in_the_loop.py
index 5a5a9287a7d..fd589d1c422 100644
--- a/libs/langchain_v1/langchain/agents/middleware/human_in_the_loop.py
+++ b/libs/langchain_v1/langchain/agents/middleware/human_in_the_loop.py
@@ -83,7 +83,7 @@ class HumanInTheLoopMiddleware(AgentMiddleware):
         self.tool_configs = resolved_tool_configs
         self.action_request_prefix = action_request_prefix
 
-    def after_model(self, state: AgentState) -> dict[str, Any] | None:  # noqa: PLR0915
+    def after_model(self, state: AgentState) -> dict[str, Any] | None:
         """Trigger HITL flows for relevant tool calls after an AIMessage."""
         messages = state["messages"]
         if not messages:
@@ -94,16 +94,13 @@ class HumanInTheLoopMiddleware(AgentMiddleware):
             return None
 
         # Separate tool calls that need interrupts from those that don't
-        interrupt_tool_calls: dict[str, ToolCall] = {}
+        interrupt_tool_calls: list[ToolCall] = []
         auto_approved_tool_calls = []
 
         for tool_call in last_ai_msg.tool_calls:
-            tool_name = tool_call["name"]
-            if tool_name in self.tool_configs:
-                # fix: id should not be typed as Optional on `langchain_core.messages.tool.ToolCall`
-                interrupt_tool_calls[tool_call["id"]] = tool_call  # type: ignore[index]
-            else:
-                auto_approved_tool_calls.append(tool_call)
+            interrupt_tool_calls.append(tool_call) if tool_call[
+                "name"
+            ] in self.tool_configs else auto_approved_tool_calls.append(tool_call)
 
         # If no interrupts needed, return early
         if not interrupt_tool_calls:
@@ -116,8 +113,7 @@ class HumanInTheLoopMiddleware(AgentMiddleware):
 
         # Create interrupt requests for all tools that need approval
         interrupt_requests: list[ActionRequest] = []
-        interrupt_tool_calls_list = list(interrupt_tool_calls.values())
-        for tool_call in interrupt_tool_calls_list:
+        for tool_call in interrupt_tool_calls:
             tool_name = tool_call["name"]
             tool_args = tool_call["args"]
             message = f"{self.action_request_prefix}\n\nTool: {tool_name}\nArgs: {tool_args}"
@@ -125,7 +121,7 @@ class HumanInTheLoopMiddleware(AgentMiddleware):
 
             request: ActionRequest = {
                 "message": message,
-                "args": tool_args,
+                "args": {"tool_name": tool_name, "tool_args": tool_args},
                 "allowed_actions": allowed_actions,
                 "description": message,
             }
@@ -134,15 +130,17 @@ class HumanInTheLoopMiddleware(AgentMiddleware):
         responses: list[ActionResponse] = interrupt(interrupt_requests)
 
         # Validate that the number of responses matches the number of interrupt tool calls
-        if len(responses) != len(interrupt_tool_calls_list):
+        if (responses_len := len(responses)) != (
+            interrupt_tool_calls_len := len(interrupt_tool_calls)
+        ):
             msg = (
-                f"Number of human responses ({len(responses)}) does not match "
-                f"number of hanging tool calls ({len(interrupt_tool_calls_list)})."
+                f"Number of human responses ({responses_len}) does not match "
+                f"number of hanging tool calls ({interrupt_tool_calls_len})."
             )
             raise ValueError(msg)
 
         for i, response in enumerate(responses):
-            tool_call = interrupt_tool_calls_list[i]
+            tool_call = interrupt_tool_calls[i]
             allowed_actions = self.tool_configs[tool_call["name"]]
 
             if response["action"] == "approve" and "approve" in allowed_actions:
diff --git a/libs/langchain_v1/tests/unit_tests/agents/test_middleware_agent.py b/libs/langchain_v1/tests/unit_tests/agents/test_middleware_agent.py
index 32e2d3bd24d..42d712996db 100644
--- a/libs/langchain_v1/tests/unit_tests/agents/test_middleware_agent.py
+++ b/libs/langchain_v1/tests/unit_tests/agents/test_middleware_agent.py
@@ -785,7 +785,10 @@ def test_human_in_the_loop_middleware_interrupt_request_structure() -> None:
         assert "allowed_actions" in request
         assert "description" in request
 
-        assert request["args"] == {"input": "test", "location": "SF"}
+        assert request["args"] == {
+            "tool_name": "test_tool",
+            "tool_args": {"input": "test", "location": "SF"},
+        }
         assert request["allowed_actions"] == ["approve", "reject", "edit"]
         assert "Custom prefix" in request["message"]
         assert "Tool: test_tool" in request["message"]