Allow MCP to create/start new notebooks

[indigoviolet]

Description

I want AI agents like claude code to be able to create scratch notebooks on demand. They could run marimo edit new_notebook.py --mcp, but the MCP server configuration needs to specify a PORT ahead of time. So the alternative is running marimo edit --mcp --port PORT and somehow creating notebooks within that instance.

Suggested solution

Add a tool to create/start a new notebook from an existing file.

Are you willing to submit a PR?

• [ ] Yes

Alternatives

No response

Additional context

No response

[mscolnick]

Thanks for the feature request @indigoviolet. We want to improve our single notebook experience before letting an Agent go off and create more notebooks or start other ones. We can look into prioritizing this soon.