Not at this time. Please submit an official feature request so that we can track this request. Thanks for the input.
I added a note to this wish request:
Safe mode - for Vibe Coding
... and changed the title to
Safe mode for LLM - JMP communication
I was able to use MCP after installing this add-in!
https://marketplace.jmp.com/appdetails/Assistant
Right, the new assistant provides an MCP Server.