Blink LED remotely:

1. To access any api function, you need an API key. If you have not yet created an API key (which you need to authenticate against the API), you may do so here first

2. Find the module whose LED you wish to blink. You need the module ID. Here is a list of all your modules.

3. Ready to go...
using wget::

wget -O - --no-proxy --no-check-certificate "https://www.singingcat.net/sc/Api/[KEY]/module/[MODID]/blinkled/0x00FF0000/10/500"

In this example, 0x00FF0000 is the RGB colour encoded into a 32Bit value like this: 0x00RRGGBB.
This is followed by two integers, defining the period in which the LED is on and off, respectively.