Filter out message `content`

[akshaylive]

This line filters out tools calls. However response.content is NOT filtered. We want to make the same changes there as models like gpt-4o relies on it. Without this, we see errors like:

track_event called: AgentRun.Failed, properties: {'AgentName': 'Agent', 'Status': 'Failed', 'Timestamp': '2026-01-21T20:25:10.936376+00:00', 'ErrorMessage': 'Error: Error code: 400 - {\'error\': {\'message\': "Missing required parameter: \'input[2].arguments\'.", \'type\': \'invalid_request_error\', \'param\': \'input[2].arguments\', \'code\': \'missing_required_parameter\'}}\...
_track_event completed for: AgentRun.Failed

[cotovanu-cristian]

the link to the line actually is the link to the node itself so no line ref: https://github.com/UiPath/uipath-langchain-python/blob/main/src/uipath_langchain/agent/react/llm_node.py

I suppose you are talking about the TODO section already mentioned in code:

uipath-langchain-python/src/uipath_langchain/agent/react/llm_node.py

Lines 101 to 105 in 34bf679

	if response.tool_calls:
	filtered_tool_calls = _filter_control_flow_tool_calls(response.tool_calls)
	if len(filtered_tool_calls) != len(response.tool_calls):
	# todo: this does not actually work, but fixing tool call modifying is a separate task
	response.tool_calls = filtered_tool_calls

[mjnovice]

@cotovanu-cristian yeah, if a customer used an older agent, it just fails for simulations.

[akshaylive]

the link to the line actually is the link to the node itself so no line ref

That's so strange. If you open in new tab it shows up fine, but clicking on it doesn't. Looks like a bug in Github 😆

[akshaylive]

Fix PR: #453