Thank you for this, both the rmarkdown parameters and the plumber part.

I can run a similar example in rstudio (running plumber locally), but when i deploy it and try to run it from a browser i get an Exception occurred error.

It seems to be something with the html output, specifically the at the start of the html output file.

Is there a way to remove that part, or is there a different way to call the API?

When I edit the html file by removing that part from the document, and the GET function simply provides it in binary form it works fine.

I have a similar problem when trying to render a leaflet map. The #* @serializer htmlwidget includes this at the top of the html document.

amaizing, thks ! I do have a lot of interest in the css part. This is pure magic !