Is your feature request related to a problem? Please describe.
I'm trying to use langchain libraries, but it looks like this fork happened a long time ago and is out of date with langchain's mcp_tools.

Describe the solution you'd like
Pull changes from the baseline project in and rebase.

Describe alternatives you've considered
We've pulled in some code from more recent langchain libraries and have basic functionality, but we don't consider that a production solution.

Additional context
This is a great project - we believe the MQTT protocol belongs in the base project.