Extract tool metadata (ex: tool name) when doing graph.stream(input, stream_mode="messages") ?

[dominpm]

Extract Tool Metadata in graph.stream

When using the graph.stream function with the parameter stream_mode="messages", is it possible to extract metadata associated with the tools being used?. This will include details such as the tool name and other relevant attributes.

I am using the ToolNode to handle tool_llms calls.

Example Usage:

# Example of using graph.stream with stream_mode="messages"
for msg, metadata in graph.stream(input, stream_mode="messages"):
    # Extract tool metadata
    tool_name = metadata.get("tool_name", None) 
    if tool_name:
        print(f"Tool Name: {tool_name}")

Common Use Cases:

• Logging tool usage during streaming.
• Debugging or monitoring which tools are being invoked.
• Building analytics or reports based on tool interactions.