WLED versions since 0.8.4 implement a powerful JSON API over HTTP.
It is accessible using the /json subpage.

https://github.com/jshea2/OSC-for-WLED

Convert OSC Commands to the WLED JSON API

What are you trying to do?

Obvious is ArtNet if you’re using any other fixtures

If you don’t already use Art-Net/sACN for anything else you may find it easier to use the JSON API https://kno.wled.ge/interfaces/json-api/

There’s also a friendly interface from OSC to JSON API which makes it possible to use OSC from QLab https://github.com/jshea2/OSC-for-WLED/

Some Useful Notes On The 6805-EC10 Addressable RGB LED
https://hackaday.com/2025/03/12/some-useful-notes-on-the-6805-ec10-addressable-rgb-led/

LEDs are getting smaller and smaller, and the newest generations of indexable RGB LEDs are even fiddlier to use than their already diminutive predecessors. [Alex Lorman] has written some notes about the minuscule SK6805-EC10 series of LEDs, which may be helpful to those wanting to learn how to deal with these in a more controlled manner.

Most hardware types will be very familiar with the 5050-sized devices, sold as Neopixels in some circles, which are so-named due to being physically 5.0 mm x 5.0 mm in the horizontal dimensions. Many LEDs are specified by this simple width by depth manner. As for addressable RGB LEDs (although not all addressable LEDs are RGB, there are many weird and wonderful combinations out there!) the next most common standard size down the scale is the 2020, also known as the ‘Dotstar.’ These are small enough to present a real soldering challenge, and getting a good placement result needs some real skills.

[Alex] wanted to use the even smaller EC10 or 1111 devices, which measure a staggering 1.1 mm x 1.1 mm! Adafruit’s product page mentions that these are not intended for hand soldering, but we bet you want to try!

SK6805-EC10-Notes
https://github.com/alorman/SK6805-EC10-Notes