Full format of POST request to Photon function

[Moors7]

Any reason against using the javascript SDK, which was made to do these exact things?
https://docs.particle.io/reference/javascript/#callfunction

There's always this (amazing) tutorial if you're keen on doing it manually:

Tutorial: Spark Variable and Function on One Web Page

Let’s say you have a Spark core with both a Spark variable and a Spark function. In my case, I have the world’s simplest servo control sketch, using the nice miniature servo in the Spark Maker Kit. Using these parts, we will build a servo that you can control from a web page anywhere and monitor the position of the servo too! Here’s a preview of the finished tutorial: [image] There is a coarse adjust slider, two fine adjust buttons, and the current position of the servo is displayed. That…

Considering you're suing Node.js, and there's a library written for it, I'd suggest using that though...