Yes actually. I got most of it done over a month ago, but decided to take a break and a vacation from the project. I will be finishing this and the multiple document support and pushing it out in the next week hopefully. It is 95% done in development. I just need to test and push into production. Sorry it has taken a while but I do this work in the evenings mostly.
It works as described in my previous post. There is a URL that accepts a POST request and the body must contain the PlantUML. The response is the PNG image. I can create another URL for the SVG output if you like?