Yet Another Config Lib Mod for Minecraft 1.19.3, 1.19.2, 1.19.1 and 1.19, is a necessary and essential add-on to be able to correctly use certain Minecraft mods. That is, if this complement is not installed, some mods may not work.
Of course, in the case of only installing Yet Another Config Lib, it would be of no use, since it does not modify any aspect of the game by itself. This is because, basically, it is a mod created to facilitate the execution of some Minecraft mods.
Moreover, the installation is quite easy, since it will only be necessary to place Yet Another Config Lib and Fabric API in the “mods” folder, inside the game location, known as “.minecraft”. However, this folder may vary depending on the executable used to run Minecraft.
Actually, the use of Yet Another Config Lib is essential for the execution of some Minecraft mods, so by itself it will not have any kind of utility.