WS2812b RGB LED controller with TCP and API support - ready-made solutions?

I am looking for an off-the-shelf RGB dios device/controller (WS2812b and all sorts of clones) through which I can control individual diodes via TCP (preferably some kind of API).
In a network, for example, there will be 6 devices with 20 diodes each. Depending on what the user does on his computer, he wants to switch on/off the corresponding diode on the controller.
I do not feel like DYI + a lot of soldering - I would definitely prefer ready-made drivers only to plug in the network and connect the diodes.
I found something like this: https://mediarath.de/en/products/gledopto-gl-...mart-wifi-wled-led-stripe-controller-mic-uart
but I don't know if it would be possible to write my own program to control it?
Can you recommend any drivers?

Have a look at the WLED project:

https://kno.wled.ge/basics/compatible-controllers/
https://kno.wled.ge/interfaces/json-api/ (scroll down to 'Per-segment individual LED control')

I've seen it once, but haven't tried it myself yet. Your program must send HTTP requests.

P. S.:

However, if the whole LED-thing is to be installed in its own housing anyway, it would be much less overkill for 20 neopixels to use a small ESP82xx or ESP32 board with USB connection for 5 volt power supply plus 5 volt LEDs and to rely on Tasmota. For example a Wemos D1 mini clone for about 3€.

The associated HTTP request for a series of Neopixels/WS2812 etc. (after appropriate port presetting) is also easier:

Led<x> #RRGGBB = set hex color value where <x> is the pixel number of the LED. A blank-delimited list of colors sets multiple successive pixels.

(https://tasmota.github.io/docs/Commands/#light)

In the case of problems with 3.3 vs. 5 volts logic levels for example a separate WS2812 or other solutions are used as level shifters:

https://hackaday.com/2017/01/20/cheating-at-5v-ws2812-control-to-use-a-3-3v-data-line/
https://www.electrobob.com/ws2812-level-translator/

But maybe the different WLED controllers are also reflashable with Tasmota. Perhaps one or the other manufacturer is willing to share a Tasmota template for his controller.