Configurable toolbar in iframe

[AurumnPegasus]

Description

When marimo is embedded in an iframe in edit mode with show-chrome=false, the main marimo chrome is hidden, but the inline add-cell toolbar still appears between cells. This toolbar includes actions such as Python, SQL, and "Generate with AI".

For embedded/hosted use cases, it would be useful if this toolbar were configurable through supported marimo configuration or URL parameters.

I am embedding marimo inside another application using an iframe:

http://localhost:<port>/?access_token=<token>&show-chrome=false

Desired behavior
Add supported configuration for the add-cell toolbar, for example:

  [tool.marimo.ui]
  add_cell_actions = ["python"]

  or:

  [tool.marimo.ui]
  disabled_features = ["ai", "sql"]

Alternatively, this could be exposed as an iframe/edit URL option, such as:

?show-chrome=false&add-cell-actions=python

Are you willing to submit a PR? (You must receive approval from the team before submitting a PR.)

• Yes

Alternatives

No response

Additional context

No response

[mscolnick]

it might be better to just remove the toolbar when show-chrome=false. it seems more common, and doesn't regress anything (you can still use the add buttons next to the cells)